Zeus 15 Central Alarm

Transcription

1 0088 Central Alarm Zeus Medical Gas Alarm Systems Installation, Operation and Maintenance Manual

2 Published by Pneumatech Medical Gas Solutions All possible care has been taken in the preparation of this publication, but Pneumatech Medical Gas Solutions accepts no liability for any inaccuracies that may be found. Pneumatech Medical Gas Solutions reserves the right to make changes without notice both to this publication and to the product which it describes. Copyright 2015 Atlas Copco All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, or stored in a retrieval system or translated into any human or computer language in any form or by any means without the prior permission of Pneumatech Medical Gas Solutions. Important Personnel must make themselves familiar with the contents of this manual and the function of the unit before installing, operating or maintaining any medical gas central alarm. Information contained in this manual is correct at the date of publication. The policy of Pneumatech Medical Gas Solutions is one of continuous product improvement. Pneumatech Medical Gas Solutions reserves the right to make changes that may affect instructions in this manual without prior notice. For any enquiry regarding the servicing or repair of this device, contact the nearest accredited Pneumatech Medical Gas Solutions agent, or communicate directly with: Pneumatech Medical Gas Solutions Unit 18 Nuffield Centrum Nuffield Way Abingdon Oxfordshire OX14 1RL UK Sales Spares Service Tel: 44 (0) Tel: 44 (0) Tel: 44 (0) Fax: 44 (0) Fax: 44 (0) Fax: 44 (0) sales@p-mgs.com spares@p-mgs.com service@p-mgs.com Any complaints about the products or services provided by Pneumatech Medical Gas Solutions, please give as much of the following information as possible: Product Part Number Lot/ Batch Number Approximate date of purchase Apparent fault. Complaints T: 44 (0) F: 44 (0) complaints@p-mgs.com Zeus Central 15 Alarm Page 2

3 Table of Contents 0. SAFETY, STORAGE AND HANDLING Symbols Environmental Transport and Storage Conditions & Operating Conditions 4 1. DESCRIPTION AND OPERATION Introduction Standards Alarm Panels Visual displays Test and Mute switches Audible warning Printed circuit boards Alarm contact line fault Remote audible warning devices Relay interface panel Operation of the alarm system INSTALLATION Installation of a first fix panel Installation of a Second Fix Assembly Programming of the alarm system COMMISSIONING Introduction Functional testing Basic Checks Check alarm conditions Check the audible warning Check the Remote Audible Checking the Relay Interface panel Checking the SYSTEM ALARM indication Check Central Acknowledge function Setting the alarm system OPERATING INSTRUCTIONS General operation System Alarm light Test switch operation Mute switch operation MAINTENANCE Introduction Tools and equipment Customer recommended maintenance Weekly inspection Annual Inspection Alarm Component Replacement FAULT DIAGNOSIS Introduction RECOMMENDED SPARES Spares scheduling 29 Zeus Central 15 Alarm Page 3

4 0. SAFETY, STORAGE AND HANDLING 0.1 Symbols The following symbols apply to this product and are used in these instructions and on the product in question. The meanings of these symbols are as specified below: - Read instructions Warning - dangerous voltage Ambient temperature range Ambient humidity range Ambient pressure range Date of manufacture Caution - system alarm Power on Mute switch Test lights Protective earth Alternating current Static sensitive components Do not dispose of in general waste 0.2 Environmental Transport and Storage Conditions & Operating Conditions Min ambient temperature - 0 degrees Celsius Max ambient temperature - 50 degrees Celsius Min relative humidity (non-condensing) - 10% Max relative humidity (non-condensing) - 95% Atmospheric pressure range kpa 0.3 Cleaning The alarm cover and fascia should be wiped over with a damp cloth frequently to remove any dust or foreign substances. 0.4 Environmental Protection Discard the unit and/or components in line with WEEE regulations, or other local applicable regulations. 0.5 Electromagnetic Interference Ensure any input and data cables are physically separated from other mains and data cables. 0.6 Electrical Details WARNING... It is necessary to check the integrity of the power source for safety at regular intervals. These checks should be carried out annually and replacement power supplies used is necessary. FIGURE 1.1- DISPLAY, SHOWN IN NORMAL RUNNING Power On LED Gas ID Row Mute Switch Normal LED System Alarm LED Warning Fault LED Rows Test Switch Audible Warning Zeus Central 15 Alarm Page 4

5 Power source Mains operated using 115V 60Hz or 230V 50Hz, alternating current, from an essential circuit. Please see labelling inside unit for correct voltage. Current requirements 3.0 amps Type of protection against electric shock Class 1 (Mains supplied equipment using a protected earth) Mode of operation Continuous (equipment may be left switched on indefinitely) 1.1 Introduction The Pneumatech MGS medical gas central alarm system is designed to provide full monitoring of a complete medical gas installation. alarm systems consist of source panels connected to supply equipment located in plant rooms, and repeater panels in locations as specified by the customer for constant monitoring. FIGURE ASSEMBLY First Fix (Back Box) Bezel (Optional) Degree of protection against ingress of liquids IPX32 Degree of mobility Permanently installed (This unit is electrically connected by permanent means) Degree of protection Type B (no Applied Part or with and Applied Part not designed to meet F type (floating) requirements) Alarm Panel Security Fastener Degree of protection against flammable anaesthetic mixtures Not protected (not suitable for use with flammable gases) Rechargeable Battery The rechargeable battery (ref ) should be replaced every 5 years. 1. DESCRIPTION AND OPERATION Medical gas supply conditions are transmitted throughout the alarm system by means of an advanced data transmission circuit. The can be programmed by the use of switches to provide a fully flexible alarm system. Allowing the panels to be adapted to suit any hospital s medical gas monitoring requirements (see section 3 for programming details). FIGURE DIMENSIONAL DETAILS VIEW FROM FRONT VIEW FROM TOP VIEW FROM SIDE VIEW FROM BOTTOM Zeus Central 15 Alarm Page 5

6 An individual panel has 5 columns consisting of normal and 4 fault conditions. These columns can be setup to monitor either up to 5 medical gas source equipment, or up to 20 individual point alarms, or a combination of the 2. One alarm panel is designated the master panel for control purposes. Any number of panels may be programmed as a central acknowledge panel and cause all flashing displays on the system to change to steady when the MUTE switch on the central acknowledge panel is operated. Each alarm panel connects directly with the mains electrical power supply and alarm panels are available for use with AC supplies of either 115V±10%, 60Hz or 230V±10%, 50Hz. Electrical power supplies should be from an essential circuit and fused at 3 Amps. Each alarm panel incorporates flashing alarm displays, a POWER ON indication, a SYSTEM ALARM indication, MUTE and TEST switches and an audible warning programmed to operate depending upon the alarm condition displayed (see figure 1.1 for display image). Alarm panels are interconnected by data transmission cable. Relay interface units are available to input conditions into existing alarm systems or building management systems. 1.2 Standards The Pneumatech MGS medical gas central alarm system is specifically designed and manufactured to fully satisfy the National Health Service Model Engineering Specification C11, and is therefore ideal for HTM02-01/HTM2022 applications. Pneumatech MGS medical gas alarms are suitable for both United Kingdom and International markets, and are fully tested prior to dispatch and packaged to provide maximum protection during transit. Alarm panel printed circuit boards are designed to operate in an ambient temperature of between 0 c and +50 c. Component assemblies must be stored in their packaging in dry conditions and storage temperatures must be between 0 c and +50 c. Alarm panel enclosures provide protection to IP32 (BS EN 60529) and are electrically bonded to earth to provide safe installation. 1.3 Alarm Panels Each alarm panel consists of a first and second fix assembly, and are suitable for use with either surface or concealed installations. A bezel plate is provided for use with concealed installations and is fitted to the first fix assembly to give a neat appearance by covering the plaster joint. The front cover of the enclosure is hinged and retained by a special fastener which prevents unauthorised access (see figure 1.2). The assembly contains two printed circuit boards and provides a gas service display through windows in the front cover. The front cover has a flush dark finish polyester fascia to highlight the displays. Five columns of display windows indicate Normal and 4 alarm conditions, for each gas service monitored. Displays are illuminated by coloured LED block indicators and have captions to indicate the gas service, Normal and Alarm conditions. The alarm panel also incorporates a green LED to indicate that the electrical power supply is ON, and a red LED to indicate an alarm system fault (SYSTEM ALARM). A MUTE switch is provided to mute the audible warning and a TEST switch is provided to test the internal circuits, LED s and audible warning within the panel. Overall dimensions are detailed at Table 1.1 & Figure 1.3. Gas service legends are printed on acetate strips, which slide into the alarm panel front cover through the uppermost internal slots. The correct combination of gas service legends must be fitted to satisfy the requirements of a particular location with blank strips fitted to display columns not used. Normal C11/HTM02-01/HTM2022 legends are available as standard any special legends, point alarm legends etc. must be ordered as specials. TABLE 1.1: DIMENSIONS Alarm Panel Bezel Height(mm) Length(mm) Depth(mm) swg Chase depth(mm) Visual displays Coloured LED s fitted to the light display PCB provide the following visual displays: Power On indication (see figure 1.1): The Power On indication is displayed by a green LED which is extinguished in the event of a power failure System Alarm indication (see figure 1.1): The System Alarm indication is displayed by a red LED which is normally extinguished. This LED flashes to draw attention to any of the following failures:- Alarm contact line fault Electrical power supply failure Internal alarm failure Data transmission failure Normal gas service indication (see figure 1.1): The Normal indication is displayed by a steady illuminated green LED which is extinguished in the event of an alarm condition Alarm conditions (see figure 1.1): Each alarm condition is indicated by flashing LED s (yel- Zeus Central 15 Alarm Page 6

7 low or red) to draw attention to the specific alarm condition. All flashing displays are programmed at sixty flashes per minute, 0.5 seconds on and 0.5 seconds off in accordance with C11 and HTM02-01/HTM Display positions To provide an aesthetic display and maintain consistency in accordance with recognised and established Medical gas service sequencing, it is recommended that displays are positioned in the following sequence on each alarm panel commencing with the left hand column:- Medical Oxygen (cryogenic and manifolds) Nitrous oxide (manifolds) Oxygen/Nitrous oxide (manifolds) Medical Air 400 kpa (plant and manifolds) Medical Air 700 kpa (plant and manifolds) Medical Vacuum (plant) AGS (simplex or duplex) Point alarms (as required) 1.5 Test and Mute switches (see figure 1) TEST and MUTE switches require only gentle finger pressure. Operation of the TEST switch initiates the audible warning and illuminates (flashing) all the displays on the panel. This simple check proves the integrity of all LED s internal alarm circuits and audible warning. Given an alarm condition, operation of the MUTE switch silences the audible warning for 15 minutes. CAUTION: The TEST and MUTE switches must only be operated by gentle finger pressure. Operation by the use of instruments, tools or other implements will cause damage to the switch. 1.6 Audible warning The audible warning speaker is clipped to the alarm panel front cover and connected to the light display PCB by plug and socket (see figure 1.4). The speaker operates simultaneously with any specified alarm conditions or SYSTEM ALARM indication. The audible warning may be muted by pressing the MUTE switch (see figure 1.1). If following a mute condition another alarm condition occurs, the audible warning will operate simultaneously with the indication. Following a mute condition and a continuing alarm indication, the audible warning will resound after 15 minutes in accordance with HTM02-01/HTM2022 and C11. When the audible resounds further operation of the MUTE switch is necessary to cancel the audible. Audible warning volume may be adjusted by means of a screwdriver slot in the rear face of the light display PCB (see figure 1.4). If following an alarm condition no action is taken to MUTE the audible, the audible warning will automatically switch off when the alarm condition reverts to NORMAL. The audible tone consists of a modulation between two tones (F1 and F2). F1 = 440Hz and F2 = 880Hz. The modulation rate is 4 Hz in accordance with HTM02-01/ HTM2022 and C11 (see figure 1.4). Audible warning may be muted for specific alarm conditions during prolonged maintenance of plant or pipeline shut-down by operating the MAINTENANCE MUTE switch inside the alarm panel (see figure 1.6). Operation of the MUTE switch on a central acknowledge panel signifies that action is in hand to identify and rectify the fault which produced the alarm condition. This information is transmitted to all repeater panels displaying the gas service and the flashing visual display becomes steady, on all the respective display alarm panels, and the audible alarm is muted. This feature will automatically reset when the channel returns to normal, if a further alarm occurs, or the 15 minute time-out expires. 1.7 Printed circuit boards Two printed circuit boards (PCB s) are fitted inside a Zeus 15 Medical gas area alarm, i.e. a power supply PCB (see figure 1.5 & 1.6) and a light display PCB (see figure 1.4). All components are mounted on these PCB s which are interconnected by means of a multi-way ribbon cable and polarised connector. The internal electrical installation complies with all relevant British Standard specifications, IET wiring regulations and current UK legislation Light display printed circuit board (see figure 1.4) The light display PCB is retained inside the alarm panel front cover with six retaining studs. This PCB contains 5 columns of 5 coloured LED block indicators, a green POWER ON and red SYSTEM ALARM LED block indicator. Each LED block indicator aligns with display windows in the front cover and fascia to provide a clear display. Each gas service indicator contains eight separate long life LED s connected in two banks of four, and both the POWER ON and SYSTEM ALARM LED contains four separate long life LED s connected in parallel in two banks of two. This duplex circuitry provides system reliability and ensures that illumination continues in the event of either a single LED or circuit failure. Each LED block indicator is a plug-in component enabling easy replacement or subsequent updating of the installation. The ribbon cable is permanently attached to the rear face of the light display PCB and enables interconnection of circuits with the power supply PCB. The audible warning speaker is connected by plug and socket to the light display PCB and locates within the alarm panel front cover when installed. The light display PCB incorporates both rotary and DIL switches to allow easy programming of the alarm panel to suit all configurations. Zeus Central 15 Alarm Page 7

8 FIGURE LIGHT BOARD SYSTEM ALARM LED POWER ON LED NORMAL CONDITION LED s RETAINING STUD LOCATIONS x 6 AUDIBLE WARNING FAULT CONDITION LED s SPEAKER CONNECTION AUDIBLE WARNING SPEAKER PROGRAMMING SWITCHES (SEE SECTION 1.12) SW7 SW6 MULTI-WAY RIBBON TO POWER BOARD SW5 SW4 SW3 AUDIBLE WARNING VOLUME CONTROL SW2 SW Power supply printed circuit board (see figure 1.5 & 1.6) The power supply PCB is retained inside the alarm panel back box with four retaining studs and connects to the light display PCB multi-way ribbon cable by polarised connectors. The power supply PCB incorporates four mains terminals connected to matching plug/socket combination to accept the mains electrical power supply, which should be from an essential circuit, and enables connection of flying earth leads which electrically bond the assembly. The power supply PCB should be set to the appropriate local mains supply voltage, either 115V±10% or 230V±10%. SW8, on the power PCB selects the voltage. A filter protects the alarm system from possible spikes or disturbances of the incoming electrical power supply and an integral transformer provides 15V and 5V supplies to operate the alarm circuits. Three fuses 20mm x 5mm to BS4265 protect the power supply circuits. F1 is rated at 500mA for 230V supplies and 1A for 115V supplies, F2 at 1A, and F3 at 500mA. All mains power supply circuits and components are enclosed, with the exception of the connection terminal. A warning notice reminds personnel to isolate the electrical power supply prior to removal and maintenance, and a small plastic cover prevents accidental contact. In order to prevent inadvertent cross connection, the mains electrical power supply plug and socket is not compatible with any other connection to the PCB. The power supply printed circuit board incorporates a microprocessor which controls the operation of the alarm panel. A MAINTENANCE MUTE push button ( see figure 1.6) is fitted on the power supply PCB and is accessible with the alarm panel front cover open. With an alarm condition displayed, operation of this button disables audible reinstatement for any active alarms. This facility is designed for use when the plant or pipeline is shutoff for a prolonged period. Should additional alarms occur during a maintenance mute, the audible will re-sound. On returning the plant or pipeline pressure to NORMAL this feature automatically resets without further manual intervention. The power supply PCB incorporates 5 input channels for connection to their respective inputs. Each channel (designated CH1 to CH5) incorporates 5 terminals (C Common, 1, 2, 3 and 4) which are connected by matching plug/socket combination to accept signals from their respective inputs. A relay (complete with line continuity monitoring circuit) suitable for switching 50V and a maximum of 0.5 Amps is fitted to the power supply PCB. The relay has volt free, normally open contacts and two terminals (N/O and C) enable connection by a matching plug/socket combination to either a Medipoint central alarm system or other suitable system. The line continuity monitoring circuit can be de-selected by means of a jumper on JP1 located on the power supply PCB. The relay is de-energised and contacts open when any of the twenty alarm conditions are initiated. Terminals are also provided to enable connection of a remote audible warning device (AUD+ and AUD-). It is recommended that the input and data transmission cables are installed separate from the mains cable and maximum Zeus Central 15 Alarm Page 8

9 FIGURE POWER SUPPLY BOARD CONNECTION LAYOUT AND MOUNTING MULTI-WAY RIBBON FROM LIGHT BOARD RETAINING STUD LOCATIONS x 4 MAIN POWER CONNECTION [BONDING EARTH] [MAIN EARTH] [NEUTRAL] [LIVE] OUTPUT RELAY FOR TRANSMITTING SINGLE EVENT ALARM [COMMON] [N/O] INPUTS FOR DISPLAY COLUMNS 1-5 [COMMON] [FAULT CONDITIONS 1-4] NOTE - FAULT CONDITION 1 COINCIDES WITH THE TOP FAULT CONDITION LED, WORKING DOWN IN ORDER REMOTE AUDIBLE CONNECTION [+] [-] TRANSMISSION CONNECTIONS IN [A] [B], OUT [A] [B] AND [SCREEN] FIGURE POWER SUPPLY BOARD SWITCH & FUSE LAYOUT, PLUS BACKUP BATTERY COMMUNICATION PORT ELV 1A FUSE [F2] ELV 500mA FUSE [F3] BACKUP BATTERY CONNECTION BOOT VOLTAGE CHANGE OVER SWITCH 230V OR 115V OPTION (SW8) RESET MAINTENANCE MUTE SWITCH BACKUP BATTERY MAINS FUSE [F2] 500mA (230V) 1A (115V) JUMPER JP1 (SEE NOTE) CONFIGURABLE DIP SWITCHES FOR TRANSMISSION Zeus Central 15 Alarm Page 9

10 cable length between alarm panel and input should not exceed 100 Metres. Alarm panels accept a mains electrical power supply cable of 2.5 sq mm, and all other terminals accept a maximum cable size of 1.5 sq mm Standby battery (See figure 1.6) The power supply PCB also contains a standby battery, battery charging and power fail detection circuits. The battery provides power for both the SYSTEM ALARM indication and the audible warning in the event of an electrical power failure. The battery is fully charged after 72 hours and provides sufficient power to operate the specific alarm indications for a minimum of 4 hours. The battery is expected to have a minimum 5 years life LED Status indicators The power PCB has five LED s to indicate the following conditions to help with fault diagnostics:- LED1 is a heartbeat indication, and will normally flash green. When the power has failed, the LED will be off. If the software identifies the incorrect board, the LED will be solid red. LED2 will blink green when the RS-485 is transmitting data, off when no activity. LED3 will blink red when the RS-485 is receiving data, off when no activity. LED4 will blink green when the RS-232 is transmitting data, off when no activity. LED5 will blink red when the RS-232 is receiving data, off when no activity. See section 7. Fault Diagnosis table Alarm contact line fault CAUTION: Only Pneumatech MGS line continuity monitor modules should be fitted, otherwise the SYSTEM ALARM circuits could provide spurious indications. Integrity of the interconnecting wiring and input sensors are constantly monitored by the SYSTEM ALARM detection circuits. The monitoring circuit is designed to detect an open or short circuit as well as normal operation of the pressure sensor. In the event of a line fault the NOR- MAL LED remains illuminated, the appropriate gas service alarm indicator and SYSTEM ALARM indicator will illuminate and the audible warning sounds. When a line continuity fault is detected the flash rate of the affected circuit LED speeds up to show short circuit or slows to show open circuit when the TEST switch is operated. This facility is designed to aid fault diagnosis. Inputs must be normally closed volt free contacts. CAUTION: As the alarm panel monitors specific resistance values, only one input sensor (for each specific gas service) may be connected to an alarm panel. Similarly it is not possible to connect more than one alarm panel to a single input sensor. 1.9 Remote audible warning devices Remote audible warning devices may be fitted in locations where warnings are necessary and alarm panels are not fitted. Remote audible warning devices are housed in a surface mounted enclosure containing a warning buzzer. The audible warning device is connected by input cable to the power supply PCB within the alarm panel (alarm terminals AUD+ and AUD-, see figure 1.5). When the alarm panel audible sounds the remote audible also sounds. A maximum of four remote audible warning devices can be fitted to an alarm panel and the cable length should not exceed 50 metres Relay interface panel A dedicated relay interface panel assembly enables the medical gas central alarm system to be interconnected to an event recording circuit of a building management system, or other suitable alarm system. The relay interface unit is housed within a standard alarm panel enclosure and provides a fascia display of both POWER ON and SYSTEM ALARM. The relay interface panel incorporates a dedicated power supply PCB and a dedicated relay printed circuit board. The power supply PCB provides no-volt terminals (C, 1, 2, 3, 4) for each channel CH1 to CH5 to interconnect with a BMS system. The relay printed circuit board is similar to the standard light display board, except that the gas service alarm LED s are replaced by normally open low voltage relays. With the gas service operating normally, relay contacts are closed providing continuity between terminals C and 1, 2, 3, 4. In the event of a gas service failure the respective relay contacts open to break the continuity between terminals C and either 1, 2, 3 or 4. Relays are connected to the BMS system at terminals C, 1, 2, 3 and 4 and are rated at a maximum voltage of 50V d.c. with a maximum current of 50mA. For more details see document number Zeus 15 Relay Interface MK2 manual Operation of the alarm system Each medical gas alarm panel is connected to the mains electrical power supply and operates by 15V and 5V d.c. circuits from it s integral transformer. Service fault condition sensors provide the input to initiate both the visual displays and audible warning. Programming of the panels is done via switches which can be easily adjusted on site from within the panel (see programming section 1.12). Zeus Central 15 Alarm Page 10

11 The medical gas panels use coloured LED s to indicate the service conditions (see table 3 & 4). During normal conditions, the green NORMAL LED is illuminated. Should a service fault occur, the green (NORMAL) LED is extinguished and the appropriate service fault condition is illuminated (flashing) either by a yellow LED for warning conditions or red LED for emergency conditions, together with an audible warning. The audible warning continues until either the MUTE switch is operated or the fault condition returns to NORMAL. If the MUTE facility is operated and the alarm condition remains, the audible warning will re-sound after 15 mins and a further MUTE selection will be required. Should a further alarm condition occur after the panel has indicated a fault and has been muted, the audible warning is re-activated. The relay output (N/O and C) may be interconnected to a suitable system. The contacts are closed when all gas services are indicating NORMAL. In the event of any alarm condition, the relay contacts open, breaking the circuit to the remote system. The relay contacts remain open until all alarm conditions return to NORMAL condition. There is also a line continuity monitor integral to the board available across the N/O and C contacts. To select this the jumper on JP1 is moved to the LCM position, for totally volt free contacts the jumper is moved to the N/O position (see figure 1.6). The green POWER ON LED is normally illuminated and is extinguished in the event of an electrical power failure. The red SYSTEM ALARM LED is normally extinguished and illuminates (flashing) together with an audible warning, in the event of any of the following failures:- Alarm contact line fault. Electrical power supply failure. Internal alarm circuit failure. Data transmission failure. When a line continuity fault is detected, the NORMAL green LED remains illuminated, the respective alarm LED also illuminates (steady), and the SYSTEM ALARM LED illuminates (flashing) accompanied by an audible warning. Operation of the TEST switch illuminates all alarm LED s (flashing) and the flashing rate of the respective alarm LED indicates the type of fault. If the respective alarm LED flashes at a faster rate, this indicates a short circuit. If the respective alarm LED flashes at a slower rate, this indicates an open circuit. This facility is designed to aid fault diagnosis. The medical gas central alarm system logic is detailed at Table 3 and 4. Zeus Central 15 Alarm Page 11

12 TABLE 1.2: ALARM LOGIC INPUT PANEL Condition Input Panel - Alarm displays Normal NORMAL (steady) Power failure to input panel SYSTEM ALARM (flashing) Audible (after 30 seconds) POWER ON LED extinguished System alarm Power on LED Alarm condition Alarm (flashing), Audible if required. Data cable break/ failure between input and repeater panel All input channels to panel displayed as normal. All displayed gas services relayed from repeater panel all alarms illuminate (flashing) SYSTEM ALARM (flashing) Audible Line contact fault Alarm condition Example shows fault on channel 1, column 1 Warnings conditions - Yellow LED s Emergency conditions - Red LED s NORMAL (steady) Alarm conditions (steady) SYSTEM ALARM (flashing) Audible TABLE 4: ALARM LOGIC REPEATER PANEL Condition Repeater Panel - Alarm displays Normal NORMAL (steady) Alarm condition Alarm (flashing), Audible if required. Alarm condition System alarm Example shows fault on channel 4, column 1 Press TEST Switch, line continuity fault flashes slower than other LED s to indicate an open circuit or faster to indicate a short circuit Alarm condition Example shows fault on channel 1, column 1 from the input panel. Warnings conditions - Yellow LED s Emergency conditions - Red LED s Alarm conditions Test switch Zeus Central 15 Alarm Page 12

13 Line contact fault NORMAL (steady) Alarm conditions (steady) SYSTEM ALARM (flashing) Audible Repeater panel display when power fails to a connected input panel All alarms conditions (flashing) SYSTEM ALARM (flashing) Audible Alarm condition System alarm Example shows fault on channel 4, column 1 from the input panel. Press TEST Switch, line continuity fault flashes slower than other LED s to indicate an open circuit or faster to indicate a short circuit Repeater panel display when power fails to a connected repeater panel Alarm conditions System alarm NORMAL (steady) Alarm conditions Test switch Repeater panel display when Data cable from input panel breaks/failure All alarms conditions (flashing) SYSTEM ALARM (flashing) Audible Power failure to repeater panel SYSTEM ALARM (flashing) Audible (after 30 seconds) POWER ON LED extinguished Alarm conditions System alarm System alarm Power on LED Zeus Central 15 Alarm Page 13

14 2. INSTALLATION 2.1 Installation of a first fix panel The alarm panel backbox is suitable for both surface and concealed installation and is annotated TOP inside to ensure correct orientation. With a concealed installation a chase depth of 45mm is required and a bezel is fitted to cover the plaster joint. The procedure to install a first fix alarm panel backbox is as follows: Backbox. Locate (see figure 2.1). Ensure the backbox is the correct way up. Locate the backbox at the correct position and mark out for securing screws Wall. Fit anchors. Drill wall and fit anchors in position. FIGURE BACKBOX DETAILS KNOCKOUT SEGMENTS BACKBOX SURFACE Backbox. Fit (see figure 2.1). Select cable entry/exit points and remove the desired knock-out segments from the inside. Fit suitable grommets/cable glands as required by the contract specification. Feed cables into the box leaving 400mm to enable connection to printed circuit board. Secure back box to wall with suitable screws. FIGURE BEZEL DETAIL (ALL ROUND) BACK BOX KNOCKOUT SEGMENTS WARNING...WITH A CONCEALED INSTALLATION, THE PLASTER DEPTH MUST BE FLUSH WITH THE BOX SURFACE, LEAVING THE WATER CHANNEL PROUD OF THE PLASTER. BEZEL (OPTIONAL) SECURING SCREW (M4 x 12 PAN HEAD) Zeus Central 15 Alarm Page 14

15 WARNING...WITH A CONCEALED INSTALLATION, THE PLASTER DEPTH MUST BE FLUSH WITH THE BOX SURFACE, LEAVING THE WATER CHANNEL PROUD OF THE PLASTER. 2.2 Installation of a Second Fix Assembly FIGURE 2.3- LEGEND INSTALLATION GAS LEGEND INSTALLATION SLOTS Col. 5 Col. 4 Col. 3 Col. 2 Col. 1 WARNING...ENSURE THAT THE ELECTRICAL POWER SUPPLY TO THE ALARM IS OFF AND REMAINS ISO- LATED UNTIL REQUIRED DURING THE COMMISSION- ING PROCEDURE Backbox. Check. Ensure that the inside of the backbox is clean and free from debris. Concealed installation. Fit bezel plate (see figure 2.2). Fit bezel plate to backbox and retain with securing screw engaged in right hand anchor nut Fit Legends as required (see figures 2.3; 2.4 and table 2.1) Fit blank and gas/vacuum service legend, through the slots in the rear of the cover, as required. NB. It is necessary to remove the display PCB to access the slots easily. To provide an aesthetic display and maintain consistency in accordance with recognised and established Medical gas service sequencing, it is recommended that displays are positioned in the following sequence on each alarm panel commencing with the left hand column:- Medical Oxygen (cryogenic and manifolds) Nitrous oxide (manifolds) Oxygen/Nitrous oxide (manifolds) Medical Air 400 kpa (plant and manifolds) Medical Air 700 kpa (plant and manifolds) Medical Vacuum (plant) AGS (simplex or duplex) Point alarms (as required) When an alarm panel is required to display less than its maximum of 5 gas services, it is recommended that displays are positioned in accordance with the following (see figure 2.4 & table 2.1): TABLE 2.1: RECOMMENDED DISPLAY POSITIONS Display column 1 gas Gas 1 2 gas Gas 1 Gas 2 3 gas Gas 1 Gas 2 Gas 3 4 gas Gas 1 Gas 2 Gas 3 Gas 4 5 gas Gas 1 Gas 2 Gas 3 Gas 4 Gas 5 FIGURE EXAMPLES OF RECOMMENDED DISPLAY POSITIONS TYPICAL 1 GAS TYPICAL 2 GAS Zeus Central 15 Alarm Page 15

16 2.2.3 Alarm panel front cover. Fit (SEE FIGURE 2.4). Secure the front cover to backbox flange by securing hinge to backbox with screws provided. TYPICAL 5 GAS TYPICAL 4 GAS TYPICAL 3 GAS FIGURE DOOR INSTALLATION DETAIL. DOOR ASSEMBLY M4 x 12 PAN HEAD x 2 M4 x WASHER x 2 BACK BOX Power supply printed circuit board. Fit (see figure 2.6). Fit a plastic spacer over each of the four retaining studs in the backbox and locate the board on the studs. Fit the washers and tighten nuts in place just enough to hold the board and not crack it. FIGURE POWER SUPPLY BOARD INSTALLATION DETAILS. M3 NUT x 4 PLASTIC SPACERS x OD x 8mm LONG M3 NYLON WASHER x 3 M3 x 5 PAN HEAD POWER SUPPLY BOARD M3 STEEL WASHER x 1 M3 x 18 HEX SPACER TERMINAL SHIELD Zeus Central 15 Alarm Page 16

17 CAUTION... Printed circuit boards are susceptible to damage by static electricity and must remain enclosed in their anti-static packaging until immediately required for use. Removed printed circuit boards must be placed in their anti-static packaging immediately on removal. To prevent damage to printed circuit boards, handle with care and do not over torque retaining nuts Electrical bonding lead. Fit (see figure 2.7). Connect the flying earth lead from the power supply PCB mains terminal E to the earthing stud in the alarm panel backbox and alarm panel front cover. FIGURE EARTH LEAD ASSEMBLY DETAILS Cable Installation - Data Cable Details for the cable connections can be seen on figure 2.8 typical wiring diagrams can be seen on figure 2.9. The uses the EIA/TIA-485 (RS-485) data communications specification. Cable used for the alarm data must be suitable for these signals. Pneumatech MGS recommends the following cable types Manufacturer / Reference Part Number Belden 8132 (2 pr, Non-Plenum) Belden (2 pr, Plenum) Alphawire 6455 (2 pr, Non-Plenum) If segment lengths longer than 1200 metres, or non-standard network topologies are required, a signal booster / splitter is available. See figure 10 for examples. Pneumatech MGS recommend installation of 2 pair cable, such that a spare pair is available, if needed Cable Installation - Input Cable Details for the cable connections can be seen on figure 9, typical wiring diagrams can be seen on figure 2.9. EARTH STUD EARTH LEAD EARTH STUD M3 NUT M3 WASHER EARTH LEAD M3 WASHER M3 NUT M3 STUD The uses Pneumatech MGS Line continuity monitoring on all input signals. This type of connection is relatively immune to interference. Shielded cable is not a requirement, however, in extremely electrical noise shielding may be necessary. Pneumatech MGS recommends the following cable types, and a maximum length of 100 metres. Manufacturer / Reference Part Number Alphawire 1175C (Unshielded) Alphawire 1175L (Unshielded, LSZH) Alphawire 1295C (Shielded) M3 STUD M3 NUT M3 WASHER EARTH LEAD M3 WASHER M3 NUT Zeus Central 15 Alarm Page 17

18 FIGURE EXAMPLE MAXIMUM OF CABLE SEGMENTS 2 segment network with a single, distant panel. IN OUT BOOSTER IN OUT IN OUT IN OUT IN OUT IN OUT LENGTH OF SEGMENT <1200 METRES LENGTH OF SEGMENT <1200 METRES 2 segment network arranged as a physical cross. LENGTH OF SEGMENT <1200 METRES LENGTH OF SEGMENT <1200 METRES IN OUT IN OUT IN OUT IN OUT IN OUT IN OUT IN OUT IN OUT IN OUT IN OUT BOOSTER IN OUT IN OUT IN OUT IN OUT LENGTH OF SEGMENT <1200 METRES LENGTH OF SEGMENT <1200 METRES FIGURE TYPICAL WIRING DIAGRAMS Alarm Terminals Alarm Terminals Alarm Terminals Alarm Terminals Alarm Terminals PneumatechMGS Zeus Central 15 Alarm Page 18

19 Zeus 2.10 Typical Input Connection Alarm Terminals Alarm Terminals Zeus 6 Notes If connected to Pneumatech MGS plant, line continuity monitors are integral to the plant. 2. Unused terminals must be linked out with linking resistors provided. Notes A maximum of four point alarms may be connected to any channel. 2. Unused terminals must be linked out with linking resistors provided. FIGURE POWER SUPPLY BOARD CONNECTION LAYOUT MULTI-WAY RIB- BON FROM LIGHT BOARD MAIN POWER CONNECTION [BONDING EARTH] [MAIN EARTH] [NEUTRAL] [LIVE] OUTPUT RELAY FOR TRANSMITTING SINGLE EVENT ALARM [COMMON] [N/O] INPUTS FOR DISPLAY COLUMNS 1-5 [COMMON] [FAULT CONDITIONS 1-4] NOTE - FAULT CONDITION 1 COINCIDES WITH THE TOP FAULT CONDITION LED, WORKING DOWN IN ORDER REMOTE AUDIBLE CONNECTION [+] [-] TRANSMISSION CONNECTIONS IN [A] [B], OUT [A] [B] AND [SCREEN] Zeus Central 15 Alarm Page 19

20 3.0 Programming of the alarm system The central alarm system panels are programmed by setting a series of DIL and rotary switches on the rear of the light display board (see figure 3.3), as detailed in table 4. Rotary switches SW1 to SW5 assign the display columns to a specified input, or OFF. 1 to F correspond to normal medical gas alarms, i.e. Normal + 4 alarm conditions with an audible on all alarm conditions. 8-way DIL switch SW6 sets details specific to each panel. Rotary switch SW7 sets the panel ID. Similar switches are on the rear of the relay board in a relay interface panel. The central alarm system works by identifying each individual gas channel or set of point alarm inputs with a unique ID and by identifying each panel with a unique ID. The rotary switches are hexadecimal i.e. A corresponds to 10, B corresponds to 11 etc. for purposes of panel Ids. A channel must be set between 0 and F, 0 being OFF. SW7 in conjunction with SW6-7 give each individual panel an ID between 0 and 31. The alarm panel with the highest ID must be set as the MASTER panel (SW6-6 ON), all other panels (including Relay panels) must be set as slave panels (SW6-6 OFF). Therefore one alarm system may contain up to 32 panels the highest number being set as the MASTER. SW6-8 enables or disables the central acknowledge facility, ON enabled, OFF disabled. When the mute switch is operated on a central acknowledge panel displaying a fault condition, the flashing light on all panels showing the same fault changes from flashing to steady, and the audible alarm is muted for that particular gas. NB there may be more than one central acknowledge panel on a system (i.e. two panels in the telephone exchange on a 10 gas system), but there must be only one master panel on the system and it must have the highest panel ID on the system. SW6-1 to SW6-5 are used to identify where each channel is input onto the system. If these switches are set to ON then this means that a particular gas or set of point alarms is input to this panel. On a complete system there should only be as many of these switches set to ON as there are channels on the complete system. When set to ON the alarm panel will look for a complete set of inputs, i.e. four fault conditions. If less than four inputs are been connected to a particular channel then the linking resistors provided must be used to link out the unused conditions. I.e. if a C11 vacuum plant is to be connected, then the input alarm conditions would be connected between Common, 1, 2 and 4. Therefore a linking resistor must be connected between Common and 3. 1 Oxygen Manifold Alarms 2 Nitrous Oxide Manifold Alarms 3 Air Plant Alarms 4 Vacuum Plant Alarms A Ward 1 to 4 Point Alarms B Ward 5 to 8 Point Alarms Therefore on every panel where Oxygen is to be displayed the appropriate gas number switch (SW1 to SW5) is set to 1. Where inputs are connected into the system the appropriate DIL switch (SW6-1 to SW6-5) must be set ON. For example, if air and vacuum plant are both input into channels 2 and 3 on a two gas panel in the plant room, then SW2 must be set to 3 to display air plant, SW3 must be set to 4 to display vacuum plant. SW1, SW4 and SW5 must be set to 0. Also SW6-2 and SW6-3 must be set to ON to indicate that these alarms are input to this panel. SW8 selects the voltage range of the power supply, either 230V±10% or 115V±10%. SW9 selects the termination and fail safe biassing options for the RS-485 port. A network is divided up into segments. Each segment can be up to 1200 metres (see figure 3.1 for examples), subject to cable type and site conditions. For the two panels at the endpoints of each cable segment on a network, the termination resistor should be switched on with SW9-1 and SW9-2. For all other panels, SW9-1 and SW9-2 should be switched off. If a signal booster is the endpoint of a cable segment, the termination resistor of the booster should be enabled. See the instruction manual enclosed with the signal booster for more details. For each cable segment on a network the fail safe resistors should be enabled on a single panel, by switching on SW9-3 and SW9-4. For all other panels, SW9-3 and SW9-4 should be switched off. See figure 3.1 for example of programming settings for a typical installation. Table 2 shows a summary of the programming switch functions NOTE: Whenever the programming switches on the light board are changed, it is necessary to reset the alarm by pressing the reset button, or by cycling the power, to read in the new configuration values Programming of the alarm system An alarm system is set up by allocating a number (1 to 9) or letter (A to F) to each set of plant inputs or point alarm inputs. Typically on a 4 gas system with point alarms:- Zeus Central 15 Alarm Page 20

21 FIGURE EXAMPLE OF PROGRAMMING SWITCH SETTINGS FOR A TYPICAL INSTALLATION INCLUDING, Zeus 6 Panel Location TYPE Switch settings for example installation SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW9 C1 Gas 1 C2 Gas 2 C3 Gas 3 C4 Gas 4 C5 Gas 5 C1 Input C2 Input C3 Input C4 Input C5 Input Master Panel ID High Vie I 0 0 1* 0 0 OFF OFF ON OFF OFF OFF OFF OFF 0 ON Estates 1 R OFF OFF OFF OFF OFF OFF OFF OFF 1 ON Estates 2 R A OFF OFF OFF OFF OFF OFF OFF OFF 2 OFF South Plant Room I 0 5* 0 8* 0 OFF ON OFF ON OFF OFF OFF OFF 3 OFF Day Surgery R OFF OFF OFF OFF OFF OFF OFF OFF 4 OFF Manifold Room 1 I 0 2* 0 3* 0 OFF ON OFF ON OFF OFF OFF OFF 5 OFF Theatre Reception 1 R OFF OFF OFF OFF OFF OFF OFF OFF 6 OFF Theatre Reception 2 RI A* 0 OFF OFF OFF ON OFF OFF OFF OFF 7 OFF North Plant Room I 0 6* 7* 9* 0 OFF ON ON ON OFF OFF OFF OFF 8 OFF Maternity Manifold Room I 0 0 4* 0 0 OFF OFF ON OFF OFF OFF OFF OFF 9 OFF Maternity R OFF OFF OFF OFF OFF OFF OFF OFF A OFF Relay Interface 1 RL OFF OFF OFF OFF OFF OFF OFF OFF B ON Relay Interface 2 RL A OFF OFF OFF OFF OFF OFF OFF OFF C OFF Telephone Exchange 1 R OFF OFF OFF OFF OFF OFF OFF OFF D OFF Telephone Exchange 2 R A OFF OFF OFF OFF OFF ON OFF OFF E OFF * marks the channel as an input, Type I - Input panel, Type R - repeater panel, Type RI - repeater/input panel, Type R - relay interface panel Master Mute Panel ID RS485 TERM ID: 0 ID: 3 ID: 4 LOCATION: VIE Zeus SIGNAL BOOSTER/SPLITTER LOCATION: SOUTH PLANT ROOM LOCATION: DAY SURGERY 0 0 1* 0 0 IN OUT LOCATION: SOUTH PLANT ROOM A B 0 5* 0 8* 0 IN OUT IN OUT OXYGEN SUPPLY MEDICAL AIR SOUTH VACUUM SOUTH ID: 6 ID: 5 ID: 1 ID: 2 LOCATION: THEATRE 1 LOCATION: MANIFOLD ROOM LOCATION: ESTATES 1 LOCATION: ESTATES IN OUT 0 2* 0 3* 0 IN OUT IN OUT A IN OUT OXYGEN MANIFOLD NITROUS OXIDE Zeus 6 Zeus 6 Zeus 6 ID: 7 LOCATION: THEATRE AVSUs LOCATION: THEATRE 1 LOCATION: THEATRE RECEPTION LOCATION: MANIFOLD ROOM O2 N2O MA 4 MA 7 VAC 0 IN OUT RELAY [C] [N/O] O2 N2O MA 4 MA 7 VAC 0 IN OUT RELAY [C] [N/O] O2 N2O MA 4 MA 7 VAC 0 IN OUT RELAY [C] [N/O] A* 0 IN OUT PRESSURE SWITCH INPUTS (MASTER) ID: E ID: A ID: 9 ID: 8 LOCATION: TELEPHONE EXCHANGE 2 LOCATION: MATERNITY UNIT LOCATION: MATERNITY MANIFOLD ROOM LOCATION: NORTH PLANT ROOM A IN OUT IN OUT 0 0 4* 0 0 IN OUT 0 6* 7* 9* 0 IN OUT ENTONOX MEDICAL SURGICAL VACUUM AIR NORTH AIR NORTH ID: D RELAY INTERFACE ID: C RELAY INTERFACE ID: B LOCATION: TELEPHONE EXCHANGE 1 LOCATION: TELEPHONE EXCHANGE R2 LOCATION: TELEPHONE EXCHANGE R IN OUT A IN OUT IN OUT NOTES... CABLE TYPES NOTES... Columns marked * indicate that gas service is input at that panel Belden pair RS485 Columns marked * indicate that gas service is input at Maximum length of data cable segments is 1200 metres Alphawire 117C 5 core that panel Maximum length of input cable segments is 100 metres Alphawire B pair Maximum length of data cable segments is 1200 metres Maximum length of remote audible cables is 50 metres Alphawire 1173C 3 core Maximum length of input cable segments is 100 metres Zeus Central 15 Alarm Maximum length of remote audible cables is 50 metres Page 21

22 TABLE 3.2 PROGRAMMING Switch Setting/description Display channel 1 Off, gas display 0 channel not used SW1 Display channel 1 Normal gas 1-F display HTM02-01 Display channel 2 Off, gas display 0 channel not used SW2 Display channel 2 Normal gas 1-F display HTM02-01 Display channel 3 Off, gas display 0 channel not used SW3 Display channel 3 Normal gas 1-F display HTM02-01 Display channel 4 Off, gas display 0 channel not used SW4 Display channel 4 Normal gas 1-F display HTM02-01 Display channel 5 Off, gas display 0 channel not used SW5 Display channel 5 Normal gas 1-F display HTM SW6 OFF Channel 5 display not input at this panel 5 ON Channel 5 display input to this panel OFF to designate panel as slave 6 to designate panel as master ON (must be highest ID on system) 7 8 Sets panel ID 0 to 15 or 16 to 31 in SW7 0-F conjunction with SW6-7 SW8 OFF to disable RS485 termination 1-2 to enable RS485 termination ON (on cable segment endpoints only) SW9 OFF to disable RS485 fail safe biassing 3-4 to enable RS485 fail safe biassing ON (on one panel per cable segment only) OFF OFF OFF OFF OFF OFF 115 Channel 1 display not input at this panel Channel 2 display not input at this panel Channel 3 display not input at this panel Channel 4 display not input at this panel for panel ID 0 to 15 to disable central acknowledge facility Set voltage to 115V±10% ON ON ON ON ON ON 230 Channel 1 display input to this panel Channel 2 display input to this panel Channel 3 display input to this panel Channel 4 display input to this panel or panel ID to enable central acknowledge facility Set voltage to 230V±10% FIGURE PROGRAMMING SWITCHES SW7 PROGRAMMING SWITCHES (SEE SECTION 1.12) SW6 SW5 SW4 SW3 AUDIBLE WARNING VOLUME CONTROL CONFIGURABLE DIP SWITCHES FOR TRANSMISSION SW2 SW1 JUMPER JP1 (SEE NOTE) NOTE: Switches SW8 and SW9 are on the power PCB (see figure 3.3). All other switches are on the light PCB Zeus Central 15 Alarm Page 22

23 4. COMMISSIONING 4.1 Introduction Commissioning of the medical gas central alarm installation is carried out in full after initial installation and the appropriate sections must be carried out after a major component change. The object of commissioning is to ensure that all components are serviceable and correctly programmed. The commissioning procedure also ensures that anticonfusion checks are carried out and that the correct gas service is displayed in the designated column. Personnel carrying out the following commissioning procedure must be qualified and fully conversant with the information contained in this manual. WARNING: Before commencing the commissioning procedure, ensure that all installation procedures are complete and that all wiring is correctly connected. Before switching on the mains electrical supple, ensure the supply is correctly fused. 4.2 Functional testing When all alarm panels have been installed and connected, the following must be carried out on every alarm panel in the systems. Commence the procedure at alarm panels which receive an input and progress until all input panels are proven. Carry out the procedure on the central panel(s). Repeat the procedure on all repeater panels including those previously checked as input panels, Ensure that all gas service displays and all alarm panels are proven. 4.3 Basic Checks Check the multi-way ribbon cable is correctly connected (see figures 2.7 & 2.11). Switch ON electrical power supply to alarm panel. Check that the POWER ON LED illuminates. Press the TEST switch and check that all the alarm panels LED s illuminate (flashing) and the audible warning sounds (see figure 1.1 and table 1.2). 4.4 Check alarm conditions Taking each gas service in turn, ensure that the NOR- MAL indication is illuminated in the correct display column on all panels displaying that gas service, when the gas service is set to work normally. Set the gas service to introduce the 1st, 2nd, 3rd and 4th alarm conditions and ensure that the correct alarm light illuminates in each case. Throughout the procedure, ensure that the LED s are the correct colour and gas service legends are correct and in accordance with the correct specification. This check must be carried out on all panels displaying that particular gas service. 4.5 Check the audible warning Whilst carrying out paragraph 2.4, ensure that audible warning sounds for the appropriate alarm conditions. Ensure the operation of the MUTE switch cancels the audible and that the audible comes on again after approximately 15 minutes. 4.6 Check the Remote Audible Check that all remote audibles operate whenever there is an alarm condition on its parent panel. Check that the remote audible is silenced by operation of the MUTE switch on parent panel. 4.7 Checking the Relay Interface panel If a relay interface panel is used with the alarm system, its operation must be checked whilst checking each gas service status applicable to the panel. With a gas service operating normally the appropriate relay should be energised and it s contacts should be closed (see document number for more details). 4.8 Checking the SYSTEM ALARM indication The procedure for checking that the SYSTEM ALARM circuits are operating correctly is as follows, and should be carried out on all alarm panels:- Electrical power supply. Switch OFF Indications. Check. Check that POWER ON LED is extinguished and SYS- TEM ALARM LED is illuminated (flashing), accompanied by an audible warning (see table 3) after 30 seconds. If the panel receives an input, ensure that the gas display on all panels displaying that particular gas service have illuminated (flashing) LED s for all input alarm stages and the SYSTEM ALARM LED illuminates with an audible warning. Electrical power supply. Switch ON. Ensure that all indications return to NORMAL (see table 3), including displays on repeater panels. Alarm panel front cover. Open. Line continuity monitoring. Check open circuit. Disconnect input plug from gas service channel on power supply PCB (see figure 1.5). Check that the respective gas service channel indicates NORMAL and that all alarm conditions are steady illuminations. Check that SYSTEM ALARM LED illuminates (flashing) accompanied by an audible warning. Press the TEST switch (see figure 1.1) and ensure that all alarm LED s flash at a slower rate than other displays (see table 1.2). Check that all repeater pan- Zeus Central 15 Alarm Page 23

24 els which display that input indicate all alarm conditions and SYSTEM ALARM in a flashing mode. Input. Reconnect. Reconnect the input plug to gas channel ensure that all indications are NORMAL. Repeat with all other inputs. Line continuity monitoring. Check short circuit. Using a small piece of wire as a shorting link, short out input terminals (C and either terminal 1, 2, 3 or 4 as applicable, see figure 1.5). Check that the respective gas service display indicates NORMAL and that the respective alarm condition illuminates (steady), see table 2). Check that the SYSTEM ALARM LED illuminates (flashing) accompanied by an audible warning. Press the TEST switch (see figure 1.1) and ensure that the respective alarm condition flashes at a faster rate than other displays. Shorting link. Remove. Remove shorting link and repeat above step with all other inputs. On completion, ensure that all indications are NORMAL. Alarm panel front cover. Close and secure. 4.9 Check Central Acknowledge function With an alarm condition illuminated in flashing mode, operate MUTE switch (see figure 1.1) on a designated central acknowledge panel. Check all repeater and input panels displaying that alarm condition revert to a steady alarm indication Setting the alarm system Ensure that all alarm panels are closed and secured. Ensure that each gas service installation is operating normally and only NORMAL indications are displayed. 5. OPERATING INSTRUCTIONS WARNING: Any alarm condition must be investigated and the gas service returned to normal as soon as possible. CAUTION: The TEST and MUTE switches must only be operated by gentle finger pressure. Operation by use of instruments, tools or other implements will cause damage to the switch. 5.1 General operation During normal conditions the green (normal) LED s are illuminated. Should a service failure sensor operate, the green (normal) LED is extinguished and the appropriate alarm mode LED (yellow or red) is illuminated and the audible warning sounds, if required (see table 3). The audible warning will continue until either the MUTE switch is pressed or the gas service is returned to normal. If the mute facility is operated, the audible warning will re-sound after 15 mins, until either the MUTE switch is re-selected or the gas service is returned to normal. Should a further alarm condition occur after the panel has indicated an alarm and has been muted, the audible warning is reactivated. 5.2 System Alarm light Should the SYSTEM ALARM light illuminate, a fault within the alarm system has occurred. The fault must be investigated and rectified immediately. 5.3 Test switch operation Pressing the TEST switch illuminates (flashing) all LED s within a panel and sounds the audible warning (see figure 1.1 & table 1.2). 5.4 Mute switch operation Operation of the MUTE switch (see figure 1.1) following an alarm condition will switch off the audible warning. The audible warning will resound after 15 mins until either the MUTE switch is re-selected or the gas service returns to NORMAL. 6. MAINTENANCE 6.1 Introduction gas central alarm systems are designed to operate with the minimum of maintenance, however regular minor maintenance operations are recommended to prove the system integrity. Maintenance operations are carried out in accordance with the planned preventative maintenance contract purchased by the customer. Maintenance engineers must fully understand the alarm system and must be conversant with the information contained in this manual. WARNING: Obtain a work permit before commencing any work on a medical alarm system. 6.2 Tools and equipment Except for the special key provided, no special tools are required, however common hand tools are required and they must be clean and serviceable. All necessary spare parts must be obtained before commencing work. 6.3 Customer recommended maintenance The following routine operations are the recommended minimum:- Zeus Central 15 Alarm Page 24

25 LIGHT BOARD (P/N ) GAS SUPPLY LEGEND SLOTS MULTI-WAY RIBBON CON- NECTOR M3 NYLON WASHERS POWER SUPPLY BOARD (P/N ) LIGHT BOARD FASTENER M3 NUTS (5.5 A/F) & M3 NYLON WASHERS POWER BOARD FASTENER M3 NUTS (5.5 A/F) & M3 WASHERS M3 PAN HEAD MACHINE SET SCREW M3 STEEL WASHERS M3 PILLAR (5.5 A/F) FIGURE POWER SUPPLY BOARD COMPONENT REPLACEMENT ELV 500mA FUSE [F3] MULTI-WAY RIBBON CON- NECTOR BACKUP BATTERY CONNECTOR F2 CLIP ON COVER 1A FUSE (P/N ) F3 CLIP ON COVER 500mA FUSE (P/N ) BACKUP BATTERY (P/N ) NOTE...Make note of the respective positions of all the input connectors prior to disconnection in preparation for reconnection F3 CLIP ON COVER 500mA FUSE - 230V (P/N ) 1A FUSE - 115V (P/N ) Zeus Central 15 Alarm Page 25

26 FIGURE LIGHT BOARD COMPONENT REPLACEMENT ROW OF GREEN LED S (P/N ) GREEN POWER ON LED (P/N ) RED SYSTEM ALARM LED (P/N ) SPEAKER CONNECTOR SPEAKER ROW OF RED LED S (P/N ) ROW OF YELLOW LED S (P/N ) FIGURE 5.3- BOARD FUNCTION DIAGNOSTIC LED S LED 4 LED 5 LED 1 LED 3 LED 2 Zeus Central 15 Alarm Page 26

27 FIGURE POWER SUPPLY AND LIGHT DISPLAY PCB REPLACEMENT WARNING: ENSURE THAT THE MAINS ELECTRICAL SUPPLY IS OFF AND REMAINS ISOLATED DURING WORK ON THE INTERNALS OF THE ALARM PANEL. SECURITY FASTENER (Requires key, supplied with alarm panel CAUTION: Printed circuit boards are susceptible to damage by static electricity and must remain enclosed in their anti-static packaging until immediately required for use. Removed printed circuit boards must be placed in their anti-static packaging immediately on removal. To prevent damage to printed circuit boards, handle with care and do not over torque retaining nuts. 6.4 Weekly inspection Press the TEST button on each alarm panel and ensure that all LED displays illuminate (flashing) and the audible warning sounds. If the remote audible is connected to the alarm panel, ensure that it operates simultaneously with the panel. 6.5 Annual Inspection The annual inspection proves the integrity of the interconnecting wiring between each gas service sensor and input alarm panel, the line continuity monitoring circuits and the integrity of the internal alarm panel circuits and interconnecting data transmission cable. The annual inspection must be carried out on all alarm panels and consists of the operations in paragraphs 2.3 to 2.10 inclusive. 6.6 Alarm Component Replacement Figures 5.1, 5.2 & 5.3 gives details for replacing alarm components Figure 5.1 shows details for accessing the alarm panel and disconnection the power supply and light board (see section figures 1.5, 1.6 and table 1.2 for setting up a power board). Figure 5.1 shows details for replacing the fuses, backup battery and disconnecting the electrical and data sockets. NOTE... The replacement battery may take up to 72 hours to fully recharge. Figure 5.2 shows details for replacing LED s and speaker. NOTE... To access the LED s the light board will need to be removed from the alarm panel (see figure 1.5) Alarm panel test. After performing any work on the alarm Ensure that POW- ER ON LED is illuminated and SYSTEM ALARM LED is extinguished. Press TEST switch and ensure all LED s illuminate (flashing) and audible warning operates (see Line continuity FAULT, TEST SWITCH on Figure1.1 and table 1.2). 7. FAULT DIAGNOSIS 7.1 Introduction The following tables detail possible defects/symptoms which may occur with the medical gas central alarm system, with the necessary rectification action. TABLE 7.1: TEST OR MUTE SWITCH FAILS TO OPER- ATE Possible cause Remarks/rectification action 1. Faulty switches Replace the light display PCB. TABLE 7.2: SINGLE LED INDICATOR FAILS TO ILLUMI- NATE Possible cause Remarks/rectification action 1. Faulty LED indicator Replace LED. 2. Faulty light display PCB. Replace light display PCB. Zeus Central 15 Alarm Page 27