EKWXA EKWXBA AIR COOLED WATER CHILLERS AXIAL FANS. Modelos INSTALLATION, OPERATION AND MAINTENANCE MANUAL

Transcription

1 INSTALLATION, OPERATION AND MAINTENANCE MANUAL EKWXA EKWXBA Cooling only Sólo frío With Heat pump Bomba de calor Modelos Cooling Capacities: 26,0kW a 40,0kW Rev Rev. 000

2 TABLE OF CONTENTS INTRODUCTION... 3 GENERAL DESCRIPTION... 3 SAFETY PRECAUTIONS... 5 GENERAL CHARACTERISTICS... 6 COMPONENT DESCRIPTIONS... 6 VERSIONS... 9 ACCESSORIES / OPTIONALS... 9 ELECTRICAL DATA APPLICATION LIMITS UNIT RECEPTION INSPECTION UPON ARRIVAL STORAGE RIGGING INSTALLATION LOCATION UNIT SETTLEMENT SERVICE AREA WEIGHT DISTRIBUTION (KG) REFRIGERANT CHARGE COMPRESSOR LUBRICANT START UP LCX CONTROL MCX CONTROL (OPTIONAL UPGRADE) MAINTENANCE APPENDIX: SAFETY CHART R410A

3 INTRODUCTION GENERAL DESCRIPTION Manual purpose This manual and the and documents have been created to guide in the correct installation, start-up and maintenance of the unit. For this reason is essential to read the instructions paying due attention. The manufacturer waives any liability, for possible damages on persons or stuff, as a consequence of an improper use of this unit and/or non-compliance with these instructions. Manual preservation This manual and the electric diagram of the unit must be retained and remain available to the operator for further consultation. Local safety standards Follow the local security standards during installation. Electrical network Check that electrical network features are in accordance to data shown in the data nameplate of the unit. Packaging Packaging material (plastic bags, cellular polystyrene, cloves, etc.) constitutes a dangerous source, for that it should be kept out of the reach of children and recycled correctly according to local security standards. Maintenance Before executing any maintenance operation, cut off the unit power supply. Operations have to be carried out following local security standards. Periodic inspections Carry out periodic inspections to detect possible damaged or broken pieces. If they are not repaired it could result in damage to people or stuff. Incorrect operation In case of breakdowns or operation faults, turn off unit. Repairs Reparations should be always realized for trained personal authorized by the manufacturer using original spares. Failure to comply with these warnings could affect the safety features of the unit. Modifications All manufacturer responsibility is declined when the warranty has been expired in case of electrical and/or mechanical modifications. Alterations in general not expressly allowed and not respecting what is instructed here, they cause the warranty expiration. Use The unit will only be used for the purpose it has been conceived. Any other use does not imply any kind of compromise or liability for the manufacturer. 3

4 Principles of security on installation The unit is designed and built so that a risk to health and security for people are not supposed. Suitable project solutions have been adopted to delete possible causes of risk in the system. Data actualization Continuous improvements to the product may determine variations in the data given even without notice by the manufacturer. Standards and certifications CE QUALIFICATION: Our units have CE brand in accordance with the expected for the relevant community directive, and its last modifications, as well as for each country's national legislation. 4

5 SAFETY PRECAUTIONS Installation and maintenance of air conditioning equipment can be dangerous because the liquid circulating through the system is pressurized, some elements work at high temperatures and includes electrical components. Only qualified and trained service personnel should install, start up and do maintenance tasks on this air conditioning equipment. During every visit follow recommendations from the Installation Operation Maintenance manual, pay attention to the indications shown on unit s stickers and take safety precautions according general legislation. Strictly follow all safety codes. Use safety glasses, work gloves and any other work safety accessory. For brazing operations use a quenching cloth and have a fire extinguisher at a close distance in case of emergencies. WARNING! Before starting installation, service or maintenance turn off system s main power switch to avoid electrical shock which may result in personal injury. When repairing the unit use only original spare parts and install them properly in the same place and position where the old parts were located. Do not install the unit in explosive atmosphere. 5

6 GENERAL CHARACTERISTICS EKWXBA compact units are reversible air cooled water / heat water production and designed for its installation outdoor. It is provided with R-410A refrigerant charge already for its installation. These units are manufactured under strict quality control throughout the whole process and when they are finished they are tested in the factory, checking the correct working of all their components. COMPONENT DESCRIPTIONS 1. Remote Control System. LCX Control System - Main on-off switch. - Device control phase sequence. - Monopolar magnetothermal of control protection. - Monopolar magntothermal of protection of compressors crankcase resistors. - Safety and isolation transformer for 24 Vac power to control itself. - Contactors for compressors and outdoor fans. - Controller with LED display of 3 ½ digits and 8 icons to show all the information on the display itself. - Display by default: Outdoor water temperature. - Self-diagnostics with alarm code display. Main Functions of the Control System - Regulation Water temperature. - Counting the hours of operation for maintenance of compressors and pumps if the unit is built with this optional. - Visualization of inlet and outlet water temperatures on the unit and Condenser and Evaporation pressures. - Timings of starts of compressors. - Security protection of High Pressure. - Compressors Electronic protection. - Outdoor fans protection. - Water flow protection. - Intervention for antifreeze security. - ON/OFF remote. - Remote changing of operation mode Cool/Heat. - Condensation and evaporation pressure control with 2 ventilation stages.. - Reversible valve of cycle inversion (Only for het pump models). - Discharge maneuver. Start and ending of Pressure discharge. Control of run times between defrosts. 6

7 MCX Control System (OPTIONAL UPGRADE) - Controller is composed of user interface and electronic board. - Power supply : 20/30 Vdc 24 Vac. - Panel mounting type. - Screen with display that allows the inputs and outputs to be visualized. - Operating mode : 2 compressors, cooling only and heat pump. - Defrosting by pressure transducers. - Management of water circulating pump and hydraulic module. - Clock programming. - Programmable controller with 3 access levels: User, Maintenance and Manufacturer. Main Functions of the Control System - Regulates wáter temperature - Service hour counter for compressors and wáter pumps (optional) - Intake and outlet water temperature reading displays, as well as, pressure reading displays in evaporator and condenser stages - Compressor start timers - Pressure overload safety protection - Electronic compressor protection - External fan protection - Water flow protection - Anti-freeze active protection - Remote ON/OFF - Remote COOL/HEAT mode toggle - Condensing and evaporating pressure control by incorporating 2 ventilation stages - Check valve for cycle reversion (only available for Heat Pump units) - Anti-frost feature. Anti-frost start and stop settings through pressure readings. - Anti-frost duration time control. 2. Compressor Hermetically sealed, alternative compressor with wide operation limits. Equipped with thermal protection, - any other additional protection is not needed-, it includes its oil charge for the perfect lubrication and internal shock-absorbing system. The compressor is mounted on the base with antivibration supports and it is acoustically isolated, guaranteeing a silent and vibration-free operation. 3. Outdoor coils Coils built with seamless copper tubes and expanded in aluminum fins. They incorporate a distributor with neck and calibrated orifice (nozzle) to improve gas distribution in Cool mode. 4. Refrigerant-water heat exchanger Stainless steel plate heat exchanger (AISI 316) welded with a bronze based technique. It s perfectly isolated with insulating material to avoid thermal exchange with its surroundings. It incorporates a resistor to frost protection mode to avoid dangers of breaking by water freezing in case of lack of water flow. 5. Motorfan Mounted on a square-based embouchure; with a circular opening, which is ideal for optimal aerodynamic performance of air flow supplied by the fan. Weatherproof completely sealed and permanently lubricated. They consist of aluminum blades designed for low noise, inserted into the outdoor rotor of a high-efficiency motor with IP-54 protection and Class F coil insulation. Internal thermal sensors have built-in for their protection and an external safety grate. 7

8 6. Expansion devices The unit is equipped with thermostatic expansion valves with MOP on in the inlet of plate heat exchanger for functioning in refrigeration mode. The expansion in the outdoor coil, when necessary (functioning in heating mode), is done through orifice (nozzle). 7. High pressure pressostat Security pressostat connected to the compressor output (maximum pressure point) manual reset. Shut off is calibrated to a pressure of 42 bars. 8. Dehydrator filter Bidirectional type filters are mounted in the liquid line. It has a desiccant solid core that minimizes vibration and friction during operation, as well as absorbing the excess moisture and filter possible impurities. 9. Liquid container It is, basically, a tank to hold the difference of refrigerant charge required by the unit to operate between Cooling/Heating. 10. Check valves Only in heat pump units to carry out the bypass to the expansion system of the secondary exchanger block. In cooling mode it carries out the bypass to the coil, in heating mode, to the expansion valves. 11. Sheet structure The unit s structure is weather resistant and it consists of galvanized steel sheet applying an oven-cured painting process by polymerizing paint providing excellent coating to whole set and, especially, in edges and corners. The freestanding base is built with high stiffness steel and the rest of the structure is made of galvanized steel. The design is intended for easy maintenance. The color of the finished set is RAL

9 VERSIONS STANDARD Outdoor fans of motors of 6 poles and without compressor isolation Outdoor fans with 6 poles and with compressor isolation IC Type 1: Basic Compressor Isolation [Sound level reduction 2 db (A)] Type 2: Low Noise Compressor Isolation [Sound level reduction 6 db (A)] Outdoor fans of Bionic Profile of 8 poles and with Compressor Isolation SIL Type 1: Basic Compressor Isolation [Sound level reduction 3 db (A)] Tipo 2: Low Noise Compressor Isolation [Sound level reduction 8 db (A)] SS Electronic Fans of Bionic Profile and Compressor Isolation Low Noise ACCESSORIES / OPTIONALS CONDENSATION CONTROL EMPOWERED FAN SOFT STARTER ELECTRONIC EXPANSION HYDRONIC KIT WATER MANOMETER VICTAULIC STANDARD, IC and SIL: Outdoor fans AC with variable speed SS: Speed regulation standard incorporated Incorporation of Electronic Fans EC of bionic profile with more available pressure This accessory includes Condensation Control of the Unit. Soft Starters to minimize the intensity peaks at the start of the compressor Expansion by Electronic Injection valve Option 1: Pumop + Container + Expansion vessel Option 2: Pump + Expansion vessel Manometer incorporation for pressure reading of inlet and outlet water Outdoor Connections of type VICTAULIC Inlet Water Coils coated with Blycol of finned package AGRESSIVE ENVIRONMENTS Coils with Aluzinc fins Coils with copper fins COIL PROTECTIONS SUPERVISION MANAGEMENT OF SEVERAL UNITS Incorporation of grilles as a protection to avoid bumps in condenser coils External supervision system Modular control system via master/slave *Apart from this options consult our Commercial Department for any other configuration or function not described as available. 9

10 ELECTRICAL DATA WARNING! Before starting any type of operation switch off main power switch. The electrical power supply to the unit must be within the 10% of the voltage indicated on the nameplate. Unit start-up at incorrect voltage is not covered by our guarantee. When making electrical connections always use unit wiring diagram. Be sure that compressor crankcase heater is energized before unit start. The installer has to install line protection elements according to local laws. The interconnecting wires have to be in protection tube or inside groove channel. WARNING! It is mandatory to install flow switch at the machine water inlet and with previous straight section of 1,5m without changes in cross section to assure the water or fluid is laminar. Failure to comply with this causes loss of the equipment warranty. 1. Main power supply 400/3/50 + neutral + ground 2. Main power switch 2 CONTROL MANEUVER L1 L2 L3 N T 1 10

11 Water I/O differential EKWXA/EKWXBA APPLICATION LIMITS TEMPERATURE COOLING CYCLE MÍN. MÁX. Outgoing chilled water 5ºC* 16ºC Outdoor air dry bulb 19ºC** 46ºC HEATING CYCLE MÍN. MÁX. Outgoing hot water 35ºC 55ºC Outdoor air water bulb -10ºC 18ºC*** * For lower temperatures it is necessary to use water glycol mixture. ** For lower temperature use optional low ambient control. ***For lower temperature use optional evaporating pressure. EVAPORATOR OPERATING LIMITS Inlet water temperature 11

12 UNIT RECEPTION INSPECTION UPON ARRIVAL It is advisable to examine carefully the unit upon receipt. Inspect equipment received for damage or missing element. If units are damaged or shipment is incomplete, immediately file the claim with the transport company. (Within the first 48h) Check if unit nameplate voltage is correct and agrees with local power supply. In case of detecting any damage or anomaly it is recommended to contact our customer support. STORAGE If the unit is to be stored before installation, several precautions must be kept to avoid any damages, corrosion or any other type of deterioration: Do not store the unit in locations with temperatures over 50ºC and preferably without exposure to direct sunlight. Minimum storage temperature: -10ºC Maximum humidity: 90% Moreover it is recommended: - Move it carefully - Avoid placing other objects on the unit (Unless this is done within the overlay limits indicated in the packaging) - Avoid placing the unit with heat shrink protection under the sun, as the pressure of the circuits might assume values that could lead to activation of the safety valves RIGGING Before moving the unit be sure that all units panels are well fixed. Raise and set down the equipment carefully. Never tilt the unit more than 15 degrees during transportation (Fig. 2). When lifting the unit ensure that it is balanced and steady, keep in mind that the heaviest part is where the compressor is installed. Always transport unit to installation place in original packaging. 12

13 INSTALLATION LOCATION Check if construction is able to support unit weight. Check that the service area is the one indicated for this unit. Choose a place free of dust and waste. Consult and respect all regulations concerning installation of air conditioning systems. Install shock absorbers in all the installation to avoid noise transmission. Check if sound level direction will not disturb any person. UNIT SETTLEMENT Make sure the unit is correctly levelled. The bed frame should be strong and solid enough to support the weight of the machine. Assure the drainages work correctly. SERVICE AREA Make sure to respect the following measures for the correct operation of the unit mm Coil sides mm Connections and electrical panel side mm Electrical panel side. 13

14 WEIGHT DISTRIBUTION (kg) POMPE À CHALEUR A B TOTAL

15 REFRIGERANT CHARGE ATTENTION! Never use oxygen to pressurize system or purge lines for leak test. Oxygen reacts violently with oil, which can cause an explosion resulting in damage, personal injury or death. If is necessary to add or recuperate refrigerant 410A always do it in LIQUID phase. Supplying refrigerant in gas or vapor form, by mistake, will result in wrong mixture conditions. Due to its high pressure and quick evaporation, refrigerant R410A cannot be kept in liquid phase inside charge cylinder because bubbles would form, altering the readings. The electronic scale is reinforced with a four support-point structure for the weight sensor of the refrigerant bottle. In addition, it can also be used for any type of refrigerant s charge. The refrigerant s charge is carried out opening and closing the valve manually. ATTENTION! If it is necessary to make brazing operation, first fill the circuit with dry nitrogen. Burning refrigerant 410A results in toxic gas emissions. Immediately repair all refrigerant leaks. Never overcharge the system. Never use compressor as vacuum pump. If during operation will appear symptoms of refrigerant loss is necessary to make leak test. Leak detectors usually employed with CFC and HCFC cannot be used with R410a, due to chlorine in its composition. A leak detector for R134A may be used but the sensibility will be lower (when sensibility is 1 for R134A, it falls to 0,6 for R410A). To find small leaks, you will need a detector for HCF. Sensibility for R410A is approximately 23 grams per year. If gas leak is detected is necessary to remove and recuperate complete refrigerant charge. Pressurize system with dry nitrogen. If leakage has been not detected break a vacuum, dehydrate and charge with refrigerant. COMPRESSOR LUBRICANT Compressors with R410A refrigerant use polyester synthetic oil. Each compressor s manufacturer recommends a specific type of oil for its products. The compressor or the system should not be left opened to atmosphere more than 15 minutes. Synthetic lubricants are used as ester (POE, Polyol Ester) that have a high solubility with R410A. Since these types of oils are very hygroscopic, more care should be taken rather than with the conventional ones. Furthermore, when these synthetic oils are mixed with minerals or alkylbenzene, they deteriorate producing capillary obstruction or failures in the compressor. Do not mix them under any circumstance. 15

16 BEFORE START UP Check if all wires are well tightened. Check if all panels are firmly secured with screws. Verify if there is no refrigerant or oil leakage. Verify if unit is installed on level. Verify if there is enough space for service and maintenance. Check if drain holes in unit base are not blocked. Check if the cranckcase heater of each compressor has been energized at least 24 hours before unit start up. Check if air filters are clean and correctly mounted. Check all grills, air diffusers, air ducts and flexible connections. Be sure that electrical power source agrees with unit nameplate rating. Fans rotate in the right direction. START UP Start up to be performed by qualified technical people. Make start-up check list and use similar check up for service and maintenance. Record chilled water inlet and outlet temperatures and pressures, outdoor air temperature, volts and amps of each compressor and fan motor, suction and discharge pressure of each compressor. Should remind that after four hours of system operation is necessary to clean air filters. Observe at least 3 cooling cycle operations. Due to the fact that the unit has frequency converters for compressors and fans, it s essential that the supply be at a minimum of 300 ma to prevent supply cuts caused by the differential switch. LCX CONTROL START UP: SHUTDOWN: 16

17 MCX CONTROL (OPTIONAL UPGRADE) START MENU Keypad utility (UP) By pressing and holding this key for, at least, 3 seconds the unit will start up if it was shutdown or it shuts down if it is running. (DOWN) By pressing and holding this key, at least, 3 seconds the unit will toggle between cooling and heating mode. If the unit is running, it needs to stop prior to switching modes and then it must be started up once again. (ESC) Pressing this key leads to a shortcut to the ALARMS menu. (RETURN) This key takes the user to the MAIN MENU screen if it is pressed in the START MENU screen. It is also used to enter menus for other selected options. MAIN MENU Keypad utility (UP) Used to scroll UP between highlighted options. (DOWN) Used to scroll DOWN between highlighted options. (ESC) Returns to the previous screen of a highlighted option. (RETURN) Advances to the next screen or sublevel of a highlighted option. ON. OFF. Starts up the unit using the last settings. Shuts off the unit according to the established time parameters. Heat/Cool. Toggles between operating modes. 17

18 COMPRESSOR WATER PUMP EXTERNAL FAN ANTI-FREEZE HEATER COOL / HEAT / ANTI-FROST MODE EKWXA/EKWXBA PASSWORD LEVEL There are 3 clearance levels for different parameters or system setting options. Level L0: User Access, no password required. Level L1: User-Maintenance Access. Level L2: Manufacturer authorized Access ONLY. DISPLAY A DISPLAY B ALARMAS/NOTIFICATIONS 18

19 ANALOG INPUTS DIGITAL INPUTS 0= Not Active 1= Active ANALOG OUTPUTS DIGITAL OUTPUTS 0= OFF 1=ON EKWXA/EKWXBA INPUTS / OUTPUTS POSITION ANALOG INPUTS DIGITAL INPUTS ANALOG OUTPUTS DIGITAL OUTPUTS Intake water Differential pressostat / Flow 1 Compressor 1 temperature. switch Outlet water temperature. Cond / Evap pressure Cool / Heat. Evap / Cond pressure Cool / Heat Thermal protection Compressor 1. Thermal protection Compressor 2. (for units with 2 Compressors) External fan termal sensors. Safety pressostat. High Pressure readings Remote Start-Stop Remote Cool/Heat selection Second SETPOINT. Thermal protection for Water pump 1 (for 2-pump Kit). Thermal protection for Water pump 2 (for 2-pump Kit). **The MCX controller automatically alternates water pumps for the next start up cycle, after 24 service hours have been logged, in order to prolong the life of the components. (Only available for units with more than 1 water pump) NO OUTPUTS. ONLY when Condensation Control OPTIONAL Kit is installed, there is a reading in ANALOG OUTPUT slot #3. Compressor 2. (for units with 2 compressors) 4 way valve (ONLY available with Heat Pump units) Anti-freeze heater Water pump for 1- pump KIT. (No Kit, shows no output. If 2- pump Kit is installed, outputs are shown in #9 and #10 slots.) External fans ALL set to lowest speed setting. ONE fan in high speed, the rest in the lowest. ALL fans in the high speed setting

20 SYSTEM PARAMETERS Display screen Display screen A. Select the Reading to be shown in Display screen A when the unit is running. By default, the reading shown on Display screen A when the unit is shut down is OFF. Display screen B. Select the Reading to be shown in Display screen B when the unit is running.. OFF: No reading shown. IdOF: ON/OFF state. Set: Setpoint value for current operating mode. reg: (Varies according to the model of the unit) AI1: Intake water temperature. (Default setting) AI2: Outlet water temperature. OFF: No reading shown. IdOF: ON/OFF state. Set: Setpoint value for current operating mode. (Default setting) reg: (Varies according to the model of the unit) AI1: Intake water temperature. AI2: Outlet water temperature Password Displays Installer-Maintenance password. Setup System ON/OFF. Indicates wether the unit is running (ON) or if it is shutdown (OFF), it also allows starting up or shutting down the unit by selecting ON/OFF. Restart After Disconnection Mode. Following a sudden power outage, this indicates the operational mode for restart. OFF: The unit is set to Standby or OFF mode. ON: The unit starts up. EQUA: The unit resumes operation under the same settings as the last time it was running before loss of power. System HEAT/COOL Indicates current operating mode HEAT/COOL and, it also allows switching between modes. If the unit is running, it stops before switching operating modes and then it is started up in the new mode. Scheduler Enable. Enables/Disables Programming Mode. REGULATION PARAMETERS Configuration Temperature Regulation Entry This is used to tell the system whether regulation will be applied to IN or OUT water temperature. AI1: Regulation of INTAKE water. AI2: Regulation of OUTLET water. Calibration of the Regulation Probes. Adjusts probe regulation values in the range between -99,9 and 99,9. Setpoint. Cooling Setpoint Temperature. Sets the value of the operating Cooling Setpoint temperature in ºC, by default this value is set to 7ºC. Values can range between 6,0 and up to 17,0ºC. Lower Limit Setpoint Temperature. This is used to set the lowest limit of the Setpoint temperature in Cooling more. By default this value is 6,0ºC. High Limit Setpoint Temperature. This is used to set the highest limit of the Setpoint temperature in Cooling more. By default this value is 17,0ºC. Heating Setpoint Temperature. Sets the value of the operating Cooling Setpoint temperature in ºC, by default this value is set to 45ºC. Values can range between 35,0 and up to 55,0ºC. Lower Limit Setpoint Temperature. This is used to set the lowest limit of the Setpoint temperature in Heating more. By default this value is 35,0ºC. High Limit Setpoint Temperature. This is used to set the highest limit of the Setpoint temperature in Heating more. By default this value is 55,0ºC. COMPRESSORS Activation Activation of Compressor 1. Activates or disables compressor 1. 20

21 ALARMS CODE DESCRIPTION TYPE OF REBOOT COMPRESSOR WATER ANTI-FREEZE EXTERNAL FAN PUMP HEATER A03 Evaporator flow switch Manual OFF OFF OFF OFF A09 High temperature Notification A10 Evaporator pump service time limits exceeded Notification A12 Condenser fan service time limits exceeded Notification A51 Condenser fans thermal protection Automatic OFF - OFF OFF A61 Maximum service hours for compressor 1 exceeded Notification AC1 Compressor 1 thermal protection Manual OFF AE1 Anti-freeze Power shut-off OFF ON - ON AH0 General high water pressure Manual OFF AP0 General evaporator pump Manual OFF OFF OFF OFF AP1 Thermal protection water pump 1 Automatic - OFF - - A13 Maximum anti-frost time exceeded Notification AL0 General low water pressure protection 3 times within 1 hour OFF A50 General fan thermal protection Automatic OFF - OFF - A7A Intake water probe Automatic OFF OFF OFF OFF A7B Outlet water probe Automatic OFF OFF OFF OFF A7V Intake transducer probe Automatic OFF OFF OFF OFF A7G Discharge tansducer probe Automatic OFF OFF OFF OFF 21

22 MAINTENANCE ATTENTION! Before performing service or maintenance system s operations turn off main power switch to avoid personal injury and put lock on power switch to avoid that any person not connected with maintenance technical can switch on electrical supply. It is advisable to do maintenance works every operating hours as well as at the beginning of each cooling season. Coils: At least once a year, clean condenser coils with water and detergent, then dry with air at a pressure of 600 KPa. Never clean with wire brush. Drainage system: Verify condition and good operation of the drainage tray and siphon. Refrigeration circuit: Check for oil refrigerant leaks, noises or system s vibrations. Take measurements of temperatures and pressures of components and record them on the maintenance form. Electrical circuit: Make sure that all electrical connections -wires, contactors and terminals- are properly tight. Record the readings for volts and amperes of each compressor and fan motor. Verify the starting current. Check the good operation of all relays, pressure switches and phase sequence relay of Scroll compressor. 22

23 APPENDIX: SAFETY CHART R410A Causes Safety data: R410A Toxicity Contact with skin Low R410A vapors can irritate the skin and eyes. In liquid form, it can freeze skin on contact. If contact with skin occurs, flush the exposed area with lukewarm water until all of the chemical is removed. If there is evidence of frostbite, bathe in lukewarm water. Take off contaminated clothes carefully as they could be adhered to the skin in case of frostbite burns. If there are irritation symptoms or blistering get medical attention. Contact with eyes If contact with eyes occurs, immediately flush with large amounts of lukewarm water for at least 15 minutes, lifting eyelids occasionally to facilitate irrigation. Seek medical attention as soon as possible. Ingestion Very unlikely - should something happen, it will cause frost burns. Do not induce vomiting. Only if the patient is conscious, wash out mouth with water and give some 250 ml of water to drink. Seek medical attention immediately. Inhalation Inhalation of the R410A vapor may cause irritation. Vapor inhalation at high concentrations may result in asphyxiation or the heart may become sensitized, causing cardiac arrhythmia. When concentration of R410A reach levels which reduce oxygen to 14-16% by displacement, symptoms of asphyxiation will occur. An individual exposed to high concentrations of R410A must be given medical attention immediately. Adequate ventilation must be provided at all times. Recommendations Semiotics or support therapy is recommended. Cardiac sensitisation has been observed that, in the presence of circulating catecholamines such as adrenalin, may cause cardiac arrhythmia and accordingly, in case of exposure to high concentrations, cardiac arrest. Prolonged exposure Professional levels Stability Conditions to avoid Hazardous reactions Hazardous decomposition products R410A: a study on the effects of exposure to 50,000 ppm during the whole life of rats has identified the development of benign testicle tumour. This situation should therefore be negligible for personnel exposed to concentrations equal to or lower than professional levels. R410A: Recommended threshold: 1000 ppm v/v - 8 hours TWA. R410A: without specification Do not use in the presence of high temperatures, flames, burning surfaces and excess humidity. Contact with certain red-hot metals may result in exothermic or explosive reactions and yield toxic and/or corrosive decomposition products. Incompatible substances: magnesium and and alloys with more than 2% of magnesium. R410A: Halogen acids produced by thermal decomposition and hydrolysis. 23

24 HIPLUS AIRE ACONDICIONADO S.L. Masia Torrents, 2 Tel Fax Vilanova i la Geltrú Barcelona, Spain In the interest of continuous improvement, technical data of our products may change without prior notice.