- CONTROL - MAIN CONTROL MODULE KEYPAD 1: 2: I Led = alight when unit is ON Led = extinguished when unit is OFF ON/OFF key: when pressed and held for at least 3 seconds, switches the unit on or off 3: F1 F1 = assumes the function associated with the operation displayed 10 4:? HELP key: depending on the menu selected, pressing this key will display brief explanations of parameters, status variables and alarms, for the benefit of the user 5: F2 F2 = assumes the function associated with the operation displayed 6: ESC ESC key: when navigating the menus, this key can be used to go back to the previous screen 7: F3 F3 = assumes the function associated with the operation displayed 8: HOME HOME key: when navigating the menus, this can be used to return to the main menu directly, whatever the screen currently displayed 9: F4 F4 = assumes the function associated with the operation displayed 1 2 3 4 5 6 7 8 9 10: Display MAIN PAGE 1: STEP: 00/00 N of capacity control steps activated in relation to n of steps available 2: No alarm active Indication of active alarms 4 ON 15 / 02 / 03 08:03:51 5 3 C O O L 2 1 STEP: 03 / 12 12. 2 C IN 9. 3 C OUT 7. 0 C SET MODE ALARM SETUP STATE 6 7 8 3: COOL Unit operating in Cool mode 4: ON Unit on OFF Unit off 5: 15/02/03 08:03:51 Display the actual date and hour 6: 00.0 C IN Inlet temperature 7: 00.0 C OUT Outlet temperature 8: 00.0 C SET Actual set-point 9: STATE STATUS: allows access to the unit status menu 13 12 11 10 9 10: SETUP SETUP: allows access to the menu used for setting parameters, changing the clock setting and setting time bands 11: ALARM ALARM: allows access to the alarms menu 12: Time bands disabled Time bands enabled 13: MODE MODE: no significant UNIT ON/OFF Press the ON/OFF key and hold for a few seconds to switch the unit on or off. When powered up, the word ON appears in the display; when shut down, the word OFF will appear. The ON/OFF status can be monitored by way of a remote device (see electrical diagram to identify the relative terminals). N.B. The different menus can also be accessed with the unit OFF. Control 25
ALARMS The presence of one or more alarms is indicated by the Current alarms icon, which will blink, and, according to the type of alarm, by activation of the cumulative trip relay. To see the list of active alarms: - press the ALARM key once - select the VIEW ALARM key - press the ENTER key. Index ALARM ACTION RESET NR. 1 CENTRE module inlet probe Disables load compensation and free-cooling Automatic 2 CENTRE module outlet 1 probe General lockout pump active Automatic 3 CENTRE module external probe Disables associated functions (free-cooling - comp. Set point Defrost time count) Automatic 4 Water Reset input Disables Water Reset compensation Automatic 5 External RH% probe Disables associated functions Automatic 6 7 CENTRE module pump 1 thermal overload relay CENTRE module pump 2 thermal overload relay Unit with 1 inboard or external pump: General lockout Unit with 2 inboard pumps: activates the reserve pump, if this is also affected by General lockout alarm Activates the reserve pump, if this is also affected by General lockout alarm Manual Automatic Automatic Centre module pump flow 8 General lockout Manual (with 1 inboard/external pump) switch Automatic (with 2 inboard pumps) 9 System load General lockout Manual 10 Phase monitor General lockout Deactivates pump after a suitable interval Automatic 11 Centre module antifreeze alarm General lockout pump active Manual 13 CENTRE module pump change Indication Automatic 14 Probe - coil 1 Cooling: indication only Automatic 15 Probe - coil 2 Cooling: indication only Automatic 20 Pressure probe - condenser 1 Lockout on circuit 1 Automatic 21 Pressure probe - condenser 2 Lockout on circuit 2 Automatic 26 Pressure probe - evaporator 1 Lockout on circuit 1 Automatic 27 Pressure probe - evaporator 2 Lockout on circuit 2 Automatic 32 Temp. probe Recovery 1 Automatic Disables "compressor module 4-way valve" output (not significant) 33 Temp. probe Recovery 2 Automatic 38 HP1 Locks out circuit 1 Manual 39 LP1 Locks out circuit 1 Automatic 40 FAN-1 Locks out circuit 1 Manual 41 COMP1-1 Locks out circuit 1 Manual 42 COMP2-1 Locks out circuit 1 Manual 43 COMP3-1 Locks out circuit 1 Manual 44 HP2 Lockout on circuit 2 Manual 45 LP2 Lockout on circuit 2 Automatic 46 FAN-2 Locks out circuit 2 Manual 47 COMP1-2 Locks out circuit 2 Manual 48 COMP2-2 Locks out circuit 2 Manual 49 COMP3-2 Locks out circuit 2 Manual 74 Condenser flow - circuit 1 Lockout on circuit 1 Automatic 75 Condenser flow - circuit 2 Lockout on circuit 2 Automatic 98 DFR1 forcing alarm Indication only Automatic 99 DFR2 forcing alarm Indication only Automatic 104 MaxDeltaP1 alarm Lockout on circuit 1 Manual 105 MaxDeltaP2 alarm Lockout on circuit 2 Manual ALARM RESET Alarms can be reset once the conditions that caused them to trip have been removed. Certain alarms are reset automatically, whereas others must be reset manually. To reset manual alarms: - go to the view alarms screen - press the RESET key VIEWING THE ALARMS HISTORY To display the list of alarm events recorded by the control system: - press the ALARM key once - select the VIEW STORE menu - press the ENTER key. 26 MENU STRUCTURE Electronic parameters are managed by way of various submenus. The menus are navigated using keys F1-F2-F3-F4, of which the function will be that associated with the operation displayed at any given moment. Control
PARAMETERS MENU To access the PARAMETERS menu, press the SETUP key. The menu is navigated using the function keys F1-F2-F3-F4. ANTIFREEZE HEATER SET POINT (SetResist) The SetResist parameter is factory-set by the manufacturer. To change the setting: - select the SetResist parameter FREEZE ALARM SET POINT (ALLFreeze) The ALLFreeze parameter is factory-set by the manufacturer. To change the setting: - select the ALLFreeze parameter FREEZE PRE-ALARM SET POINT (PreAF) The PreAF parameter is factory-set by the manufacturer. To change the setting: - select the PreAF parameter HOLD SET POINT (SetMantCool) The facility exists of enabling a hold SET POINT. If not included, the function can be activated by an authorized service centre. To set the function, if enabled: - select the SetMantCool parameter When switched to OFF, the unit remains in standby. In this condition, the water circulating pump will cut in at predetermined intervals (for a programmable duration), so that the temperature of the chilled fluid can be sensed. If the temperature registers near the operating limits of the unit, the system will restart and remain in operation until the temperature is brought comfortably within these limits. It is also possible to select the maximum number of compressors enabled to operate during the hold phase. COOL SECONDARY SET POINT (SecondSetC) A second SET POINT can be enabled, using a digital input. If not included, the function can be activated by an authorized service centre. To set the function, if enabled: - select SecondSetC When the remote contact is closed, the system switches from the normal operating set point to the selected Second Set Point. COOL SET POINT (SetCool) The function of the thermoregulator is that of maintaining the temperature of the fluid at the plate exchanger outlet as near as possible to the selected COOL SET POINT. The current Set point is determined by the value selected for the SetCool or the SecondSetC parameter, plus any compensating factors (if active). The actual operating Set point value for the unit is displayed on the main screen against the value indicated by C Set. The thermoregulator can activate only one step at a time, and only after the set scan time has elapsed. At any other time, no activation of steps is possible. The activation scan time is not fixed, but will vary according to the difference between the outlet water temperature and the current Set point value. The greater the difference (whether positive or negative), the shorter the interval between scan points will be. The SetCool parameter is factory-set by the manufacturer. To change the setting:: - select SetCool The thermoregulator deactivates capacity control steps when the outlet water temperature drops toward the value selected for the SetCool parameter. Steps are activated when the outlet temperature rises above the value given by SetCool plus a correction, computed by the thermoregulator, which ensures optimization of the compressors operating cycle according to the effective load demand on the unit. Control 26
OPERATING STATUS MENU All statuses relative to the control module can be monitored. Use the function keys F1-F2-F3-F4 to navigate. The Mod_comp1 menu relates to the module controlling the compressors of circuit 1, Mod_comp2 relates to the module controlling the compressors of circuit 2. OPERATING STATUS: GENERAL Parameter displayed Description U/M Machine status Machine mode Status of unit: ON or OFF Operating mode of machine: COOL or HEAT Current setpoint Value of operating Set Point currently active C Inlet temperature Value of temperature at machine inlet C Outlet temperature Value of temperature at machine outlet C Number of steps activated Current step value Step activation timer Step activation dynamic TimeScan Number of capacity control steps currently active The value, calculated by the thermoregulator on the basis of the various compensation factors currently active, which when added (or added in HEAT mode) to the value of the current Set Point, will establish the temperature threshold ond which a further control step can be added. Scan time controlling the activation of capacity steps. The thermoregulator can active a step only when TimeScan isters the value idicated here. Value of increment used in the count determining the activation of steps. C CompExt Value of Set Point compensation, calculated on the basis of outside air temperaure (or enthalpy). C CompWR Value of Set Point compensation, calculated on the basis of a Water Reset signal provided by an external device. C CompCar CompStarts Load compensation calculated by the thermoregulator on the basis of Delta Temp. IN-OUT (compensation value is added to the Step value) Load compensation calculated by the thermoregulator on the basis of certain parameters defining optimum operation of the compressors (compensation value is added to the Step value) CompDuty Load compensation calculated by the thermoregulator on the basis of certain parameters defining the optimum work cycle of the compressors (compensation value is added to the Step value) C Ambient temperature Temperature of the outside air C Ambient humidity Relative humidity of the outside air % Free Cooling valve percentage The percentage distance to which the free cooling valve is open (unit with free cooling only) % Free Cooling flow percentage Percentage quantity of air delivered by the dry cooler, if any, connected to the machine and operating as a free cooling appliance (unit with free cooling only) Free Cooling valve control Status of free cooling On-Off valve (unit with free cooling only) Pump 1 status Status of pump n 1 Pump 2 status Status of pump n 2 Water Reset Percentage value of Water Reset signal applied to input % OPERATING STATUS: UNIT_1 Parameter displayed Description U/M Compressor 1 status Current status of compressor 1 Compressor 2 status Current status of compressor 2 Compressor 3 status Current status of compressor 3 Cp 1 timer status Status of safety timeouts for compressor 1 Cp 2 timer status Status of safety timeouts for compressor 2 Cp 3 timer status Status of safety timeouts for compressor 3 Valve 1 c1 status Valve 2 c1 status Valve 3 c1 status Valve 1 c2 status Valve 2 c2 status Valve 3 c2 status Valve 1 c3 status Valve 2 c3 status Valve 3 c3 status Liquid solenoid Status of solenoid valve Coil temperature Value of temperature measured at the coil C Recovery temperature Valore of water temperature measured at the inlet of the recovery (if installed) C Condensation pressure Value of condensation pressure Bar Evaporation pressure Value of evaporation pressure Bar Fan status Percentage value of flow rate generated by the fans % Defrost status Current status of defrost function (not significant) Defrost count time Value registering on defrost delay timer (not significant) Sec Compressor 1 operating time Total hours operation clocked by compressor 1 Compressor 1 OFF-ON cycles Total number of starts completed by compressor 1 Compressor 2 operating time Total hours operation clocked by compressor 2 Compressor 2 OFF-ON cycles Total number of starts completed by compressor 2 Compressor 3 operating time Total hours operation clocked by compressor 3 Compressor 3 OFF-ON cycles Total number of starts completed by compressor 3 C C % 28 Control
SETTING THE CLOCK The control circuit board is equipped as standard with a clock function. To change the settings, select the SETUP menu, then -> CLOCK SETUP -> TIME. Proceed to enter the required hours, minutes and seconds by pressing the + key. The value entered can only be increased, not decreased. Once the maximum numerical value has been reached (e.g.: 23H for the hours), the scroll restarts from 0. To store the values entered, the ENTER key must be pressed and held for a number of seconds. DATE SETTING To change the settings, select the SETUP menu, then -> CLOCK SETUP -> DATE. Proceed to enter the required day of the month (0 31), the month (0 12) and the year by pressing the + key. The value entered can only be increased, not decreased. Once the maximum numerical value has been reached (e.g. 31 for the day of the month), the scroll restarts from 1. To store the values entered, the ENTER key must be pressed and held for a number of seconds. CONTROL OF UNIT BY TIME BANDS The microprocessor allows management of ON/OFF events and change of Set point utilizing the time band function. To enable this function, if required, contact an authorized service centre. CIRCULATING PUMP MANAGEMENT When the unit is switched on, or when ON is selected from a remote device, the circulating pump is started up first, and only after the scan time has elapsed will operation of the compressors be enabled. For the first 20 seconds after the pump has started, the flow alarms input is ignored. In this way the pump has time to establish full flow of the circulated fluid, avoiding any problem posed by the formation of bubbles. In the event of the unit being switch off from the remote device, the compressor and fans will stop whilst the circulating pump continues to operate for 120 seconds. CONNECTING THE UNIT TO SUPERVISORY SYSTEMS A control module is available (as an accessory), which allows communication with the outside world by way of a CAN TO MODBUS serial port. If use of this accessory is contemplated, contact an authorized service centre. OPTIONS Equipped with the appropriate options, the control module is able to recalibrate the current set point automatically, thereby optimizing operation and efficiency. The following options can be activated: - temperature of fluid supplied to system compensated with variation in ambient temperature. - temperature of fluid supplied to system compensated with variation in ambient enthalpy. - temperature of fluid supplied to system compensated in response to signal from an external device. Activation and setting of these functions must be entrusted to an authorized service centre. The unit is delivered with a standard configuration that will ensure smooth operation in all applications. Nonetheless, the configuration of specific parameters can be refined to suit particular types of use, for example: - unit providing chilled water for industrial processes - unit providing chilled water for air conditioning systems If it is considered that parameters need adjusting, contact an authorized service centre Control 29
- ROUTINE MAINTENANCE - GENERAL IMPORTANT BEFORE STARTING ANY MAINTENANCE OR CLEANING OPERATIONS ON THE UNIT, MAKE SURE IT IS NOT POWERED Few operations performed carefully and regularly may avoid the need for special maintenance. IMPORTANT AUTHORISED PERSONNEL SHOULD BE PRESENT WHEN THE UNIT IS STARTED FOR THE FIRST TIME EACH SEASON, SO AS TO PERFORM THE CHECKS DESCRIBED ABOVE, AS WELL AS THE CHECKS ON THE REFRIGERANT CIRCUIT, AS DESCRIBED IN THE SECT. ON "START-UP" ROUTINE MAINTENANCE This section is designed for the end user, and is extremely important for the correct operation of the unit over time. The operations to be performed do not require specific technical knowledge and regard simple checks on the components of the unit. STRUCTURE Check the condition of the parts making up the structure. Special attention should be paid to the steel parts. Paint so as to eliminate or reduce oxidation at the points in the unit where this problem may occur. Check that the panelling is fastened correctly. Poor fastening may give rise to malfunctions and abnormal noise and vibrations. Check the condition of any gaskets. ELECTRICAL SYSTEM Periodically have the tightness of the electrical contacts checked by a qualified technician. WATER SYSTEM Visually check that there are no leaks in the water circuit. Contact specialist personnel in the event where maintenance is required. If the unit is not operated in the winter season and exposed to temperatures below 0 C, make sure the water is completely emptied from the system (only in the event where antifreeze fluids are not used). EXCHANGE COIL The coil must be able to offer the maximum heat exchange: check its surface to make sure it is free from dirt or dust. Use a brush to remove all impurities. Check that the aluminium fins are not damaged or bent; if this is the case, "comb" the coil until using a special tool so as to restore the initial situation of optimum air flow. Use a jet of pressurised air to clean the aluminium surface of the coil, making sure to point the jet in the opposite direction to the movement of the fan. Keep the jet parallel to the direction of the fins, so as not to damage them. Alternatively use a vacuum cleaner to vacuum up the impurities from the air inlet side. WATER EXCHANGER Dirt and the possible formation of lime scale inside the exchanger may cause malfunctions in the refrigerant circuit: have specialist personnel periodically check the efficiency of heat exchange and, if necessary, clean using suitable chemical products. REFRIGERANTS The table shows the saturated condensing and evaporation temperatures according to the pressure. 30 Routine Maintenance
REFRIGERANT TABLES LBS - R.F. R-22 R-134a R-407C R-22 R-134a R-407C P (bar) Ts ( C) Ts ( C) Te ( C) Tc ( C) Td Tb P (bar) Ts ( C) Ts ( C) Te ( C) Tc ( C) Td Tb 0.0-40.89-26.22-39.43-40.53-36.97-44.10 6.1 11.44 27.39 11.13 10.03 13.10 6.96 0.1-38.95-24.24-37.56-38.66-35.10-42.21 6.2 11.91 27.87 11.58 10.48 13.54 7.41 0.2-37.10-22.36-35.77-36.87-33.33-40.42 6.3 12.38 28.35 12.03 10.93 13.98 7.87 0.3-35.35-20.57-34.08-35.18-31.64-38.71 6.4 12.84 28.82 12.47 11.37 14.42 8.31 0.4-33.68-18.86-32.46-33.56-30.04-37.08 6.5 13.29 29.29 12.90 11.80 14.85 8.75 0.5-32.09-17.24-30.92-32.02-28.51-35.53 6.6 13.75 29.75 13.33 12.23 15.28 9.19 0.6-30.57-15.69-29.46-30.56-27.06-34.05 6.7 14.19 30.20 13.76 12.66 15.70 9.62 0.7-29.11-14.20-28.05-29.15-25.66-32.64 6.8 14.63 30.66 14.18 13.08 16.12 10.05 0.8-27.73-12.78-26.71-27.81-24.33-31.29 6.9 15.07 31.10 14.60 13.50 16.53 10.48 0.9-26.39-11.42-25.42-26.52-23.06-29.99 7.0 15.50 31.55 15.02 13.92 16.94 10.89 1.0-25.12-10.11-24.19-25.29-21.83-28.74 7.1 15.93 31.98 15.43 14.33 17.34 11.31 1.1-23.89-8.85-23.00-24.10-20.65-27.54 7.2 16.36 32.42 15.83 14.73 17.74 11.72 1.2-22.71-7.64-21.85-22.95-19.52-26.39 7.3 16.78 32.85 16.23 15.13 18.14 12.13 1.3-21.57-6.47-20.75-21.85-18.43-25.28 7.4 17.19 33.27 16.63 15.53 18.53 12.53 1.4-20.47-5.34-19.69-20.79-17.37-24.20 7.5 17.61 33.69 17.03 15.93 18.92 12.93 1.5-19.41-4.25-18.66-19.76-16.36-23.17 7.6 18.01 34.11 17.42 16.32 19.31 13.33 1.6-18.38-3.20-17.67-18.77-15.37-22.16 7.7 18.42 34.52 17.80 16.70 19.69 13.72 1.7-17.38-2.17-16.70-17.80-14.42-21.19 7.8 18.82 34.93 18.19 17.09 20.07 14.11 1.8-16.42-1.18-15.77-16.87-13.49-20.24 7.9 19.22 35.34 18.57 17.47 20.44 14.49 1.9-15.48-0.22-14.86-15.96-12.59-19.33 8.0 19.61 35.74 18.94 17.84 20.81 14.88 2.0-14.57 0.72-13.97-15.07-11.72-18.43 8.1 20.00 36.14 19.32 18.22 21.18 15.26 2.1-13.68 1.63-13.11-14.21-10.86-17.56 8.2 20.39 36.54 19.69 18.59 21.55 15.63 2.2-12.81 2.52-12.28-13.38-10.04-16.72 8.3 20.78 36.93 20.06 18.96 21.91 16.01 2.3-11.97 3.39-11.46-12.56-9.23-15.89 8.4 21.16 37.32 20.42 19.32 22.27 16.38 2.4-11.14 4.24-10.66-11.76-8.43-15.08 8.5 21.54 37.71 20.79 19.69 22.63 16.74 2.5-10.34 5.07-9.88-10.98-7.66-14.29 8.6 21.91 38.09 21.15 20.05 22.98 17.11 2.6-9.55 5.88-9.11-10.21-6.91-13.52 8.7 22.29 38.47 21.50 20.40 23.33 17.47 2.7-8.78 6.68-8.36-9.46-6.17-12.76 8.8 22.66 38.85 21.86 20.76 23.68 17.83 2.8-8.02 7.45-7.63-8.73-5.44-12.02 8.9 23.03 39.23 22.21 21.11 24.03 18.19 2.9-7.28 8.22-6.91-8.01-4.73-11.29 9.0 23.39 39.60 22.56 21.46 24.37 18.55 3.0-6.55 8.97-6.20-7.30-4.03-10.58 9.1 23.76 39.97 22.91 21.81 24.72 18.90 3.1-5.83 9.70-5.51-6.61-3.34-9.87 9.2 24.12 40.34 23.25 22.15 25.06 19.25 3.2-5.13 10.42-4.83-5.93-2.67-9.19 9.3 24.47 40.70 23.59 22.49 25.39 19.60 3.3-4.44 11.13-4.16-5.26-2.01-8.51 9.4 24.83 41.06 23.93 22.83 25.73 19.94 3.4-3.76 11.83-3.50-4.60-1.36-7.84 9.5 25.18 41.42 24.27 23.17 26.06 20.28 3.5-3.09 12.52-2.85-3.95-0.72-7.19 9.6 25.54 41.78 24.61 23.51 26.39 20.63 3.6-2.43 13.20-2.22-3.32-0.09-6.54 9.7 25.88 42.14 24.94 23.84 26.72 20.97 3.7-1.78 13.86-1.59-2.69 0.53-5.91 9.8 26.23 42.49 25.27 24.17 27.05 21.30 3.8-1.14 14.52-0.97-2.07 1.14-5.28 9.9 26.58 42.84 25.60 24.50 27.37 21.64 3.9-0.51 15.16-0.36-1.46 1.74-4.67 10.0 26.92 43.19 25.93 24.83 27.69 21.97 4.0 0.11 15.80 0.24-0.86 2.33-4.06 10.1 27.26 43.53 26.26 25.16 28.01 22.30 4.1 0.72 16.43 0.83-0.27 2.92-3.46 10.2 27.60 43.88 26.58 25.48 28.33 22.63 4.2 1.33 17.05 1.41 0.31 3.49-2.87 10.3 27.94 44.22 26.90 25.80 28.65 22.96 4.3 1.92 17.66 1.98 0.88 4.06-2.29 10.4 28.27 44.56 27.22 26.12 28.96 23.28 4.4 2.51 18.26 2.55 1.45 4.62-1.72 10.5 28.61 44.90 27.54 26.44 29.27 23.60 4.5 3.09 18.85 3.11 2.01 5.17-1.16 10.6 28.94 45.23 27.85 26.75 29.58 23.92 4.6 3.66 19.44 3.66 2.56 5.72-0.60 10.7 29.27 45.56 28.17 27.07 29.89 24.24 4.7 4.23 20.02 4.20 3.10 6.26-0.05 10.8 29.59 45.89 28.48 27.38 30.20 24.56 4.8 4.78 20.59 4.74 3.64 6.79 0.49 10.9 29.92 46.22 28.79 27.69 30.50 24.88 4.9 5.33 21.15 5.27 4.17 7.31 1.03 11.0 30.24 46.55 29.10 28.00 30.80 25.19 5.0 5.88 21.71 5.79 4.69 7.83 1.56 11.1 30.57 46.87 29.40 28.30 31.11 25.50 5.1 6.41 22.26 6.31 5.21 8.34 2.08 11.2 30.89 47.20 29.71 28.61 31.40 25.81 5.2 6.94 22.80 6.82 5.72 8.84 2.60 11.3 31.20 47.52 30.01 28.91 31.70 26.12 5.3 7.47 23.33 7.32 6.22 9.34 3.10 11.4 31.52 47.84 30.31 29.21 32.00 26.42 5.4 7.99 23.86 7.82 6.72 9.83 3.61 11.5 31.83 48.15 30.61 29.51 32.29 26.73 5.5 8.50 24.38 8.31 7.21 10.31 4.10 11.6 32.15 48.47 30.90 29.80 32.58 27.03 5.6 9.00 24.90 8.79 7.69 10.79 4.59 11.7 32.46 48.78 31.20 30.10 32.87 27.33 5.7 9.50 25.41 9.27 8.17 11.26 5.08 11.8 32.77 49.09 31.49 30.39 33.16 27.63 5.8 9.99 25.92 9.74 8.64 11.73 5.56 11.9 33.07 49.40 31.78 30.68 33.44 27.92 5.9 10.48 26.41 10.21 9.11 12.19 6.03 12.0 33.38 49.71 32.07 30.97 33.73 28.22 6.0 10.96 26.91 10.67 9.57 12.65 6.50 12.1 33.68 50.01 32.36 31.26 34.01 28.51 P = corresponding pressure value (test value) Ts = saturated temperature Td = value (dew point) used to calculate the superheating: SH = Tsuction - Td (Pevaporation) Tb = value (bubble point) used to calculate the subcooling: SC = Tb (Pliquid) - Tliquid Routine Maintenance 30
REFRIGERANT TABLES LBS - R.F. R-22 R-134a R-407C R-22 R-134a R-407C P (bar) Ts ( C) Ts ( C) Te ( C) Tc ( C) Td Tb P (bar) Ts ( C) Ts ( C) Te ( C) Tc ( C) Td Tb 0.0-40.89-26.22-39.43-40.53-36.97-44.10 6.1 11.44 27.39 11.13 10.03 13.10 6.96 0.1-38.95-24.24-37.56-38.66-35.10-42.21 6.2 11.91 27.87 11.58 10.48 13.54 7.41 0.2-37.10-22.36-35.77-36.87-33.33-40.42 6.3 12.38 28.35 12.03 10.93 13.98 7.87 0.3-35.35-20.57-34.08-35.18-31.64-38.71 6.4 12.84 28.82 12.47 11.37 14.42 8.31 0.4-33.68-18.86-32.46-33.56-30.04-37.08 6.5 13.29 29.29 12.90 11.80 14.85 8.75 0.5-32.09-17.24-30.92-32.02-28.51-35.53 6.6 13.75 29.75 13.33 12.23 15.28 9.19 0.6-30.57-15.69-29.46-30.56-27.06-34.05 6.7 14.19 30.20 13.76 12.66 15.70 9.62 0.7-29.11-14.20-28.05-29.15-25.66-32.64 6.8 14.63 30.66 14.18 13.08 16.12 10.05 0.8-27.73-12.78-26.71-27.81-24.33-31.29 6.9 15.07 31.10 14.60 13.50 16.53 10.48 0.9-26.39-11.42-25.42-26.52-23.06-29.99 7.0 15.50 31.55 15.02 13.92 16.94 10.89 1.0-25.12-10.11-24.19-25.29-21.83-28.74 7.1 15.93 31.98 15.43 14.33 17.34 11.31 1.1-23.89-8.85-23.00-24.10-20.65-27.54 7.2 16.36 32.42 15.83 14.73 17.74 11.72 1.2-22.71-7.64-21.85-22.95-19.52-26.39 7.3 16.78 32.85 16.23 15.13 18.14 12.13 1.3-21.57-6.47-20.75-21.85-18.43-25.28 7.4 17.19 33.27 16.63 15.53 18.53 12.53 1.4-20.47-5.34-19.69-20.79-17.37-24.20 7.5 17.61 33.69 17.03 15.93 18.92 12.93 1.5-19.41-4.25-18.66-19.76-16.36-23.17 7.6 18.01 34.11 17.42 16.32 19.31 13.33 1.6-18.38-3.20-17.67-18.77-15.37-22.16 7.7 18.42 34.52 17.80 16.70 19.69 13.72 1.7-17.38-2.17-16.70-17.80-14.42-21.19 7.8 18.82 34.93 18.19 17.09 20.07 14.11 1.8-16.42-1.18-15.77-16.87-13.49-20.24 7.9 19.22 35.34 18.57 17.47 20.44 14.49 1.9-15.48-0.22-14.86-15.96-12.59-19.33 8.0 19.61 35.74 18.94 17.84 20.81 14.88 2.0-14.57 0.72-13.97-15.07-11.72-18.43 8.1 20.00 36.14 19.32 18.22 21.18 15.26 2.1-13.68 1.63-13.11-14.21-10.86-17.56 8.2 20.39 36.54 19.69 18.59 21.55 15.63 2.2-12.81 2.52-12.28-13.38-10.04-16.72 8.3 20.78 36.93 20.06 18.96 21.91 16.01 2.3-11.97 3.39-11.46-12.56-9.23-15.89 8.4 21.16 37.32 20.42 19.32 22.27 16.38 2.4-11.14 4.24-10.66-11.76-8.43-15.08 8.5 21.54 37.71 20.79 19.69 22.63 16.74 2.5-10.34 5.07-9.88-10.98-7.66-14.29 8.6 21.91 38.09 21.15 20.05 22.98 17.11 2.6-9.55 5.88-9.11-10.21-6.91-13.52 8.7 22.29 38.47 21.50 20.40 23.33 17.47 2.7-8.78 6.68-8.36-9.46-6.17-12.76 8.8 22.66 38.85 21.86 20.76 23.68 17.83 2.8-8.02 7.45-7.63-8.73-5.44-12.02 8.9 23.03 39.23 22.21 21.11 24.03 18.19 2.9-7.28 8.22-6.91-8.01-4.73-11.29 9.0 23.39 39.60 22.56 21.46 24.37 18.55 3.0-6.55 8.97-6.20-7.30-4.03-10.58 9.1 23.76 39.97 22.91 21.81 24.72 18.90 3.1-5.83 9.70-5.51-6.61-3.34-9.87 9.2 24.12 40.34 23.25 22.15 25.06 19.25 3.2-5.13 10.42-4.83-5.93-2.67-9.19 9.3 24.47 40.70 23.59 22.49 25.39 19.60 3.3-4.44 11.13-4.16-5.26-2.01-8.51 9.4 24.83 41.06 23.93 22.83 25.73 19.94 3.4-3.76 11.83-3.50-4.60-1.36-7.84 9.5 25.18 41.42 24.27 23.17 26.06 20.28 3.5-3.09 12.52-2.85-3.95-0.72-7.19 9.6 25.54 41.78 24.61 23.51 26.39 20.63 3.6-2.43 13.20-2.22-3.32-0.09-6.54 9.7 25.88 42.14 24.94 23.84 26.72 20.97 3.7-1.78 13.86-1.59-2.69 0.53-5.91 9.8 26.23 42.49 25.27 24.17 27.05 21.30 3.8-1.14 14.52-0.97-2.07 1.14-5.28 9.9 26.58 42.84 25.60 24.50 27.37 21.64 3.9-0.51 15.16-0.36-1.46 1.74-4.67 10.0 26.92 43.19 25.93 24.83 27.69 21.97 4.0 0.11 15.80 0.24-0.86 2.33-4.06 10.1 27.26 43.53 26.26 25.16 28.01 22.30 4.1 0.72 16.43 0.83-0.27 2.92-3.46 10.2 27.60 43.88 26.58 25.48 28.33 22.63 4.2 1.33 17.05 1.41 0.31 3.49-2.87 10.3 27.94 44.22 26.90 25.80 28.65 22.96 4.3 1.92 17.66 1.98 0.88 4.06-2.29 10.4 28.27 44.56 27.22 26.12 28.96 23.28 4.4 2.51 18.26 2.55 1.45 4.62-1.72 10.5 28.61 44.90 27.54 26.44 29.27 23.60 4.5 3.09 18.85 3.11 2.01 5.17-1.16 10.6 28.94 45.23 27.85 26.75 29.58 23.92 4.6 3.66 19.44 3.66 2.56 5.72-0.60 10.7 29.27 45.56 28.17 27.07 29.89 24.24 4.7 4.23 20.02 4.20 3.10 6.26-0.05 10.8 29.59 45.89 28.48 27.38 30.20 24.56 4.8 4.78 20.59 4.74 3.64 6.79 0.49 10.9 29.92 46.22 28.79 27.69 30.50 24.88 4.9 5.33 21.15 5.27 4.17 7.31 1.03 11.0 30.24 46.55 29.10 28.00 30.80 25.19 5.0 5.88 21.71 5.79 4.69 7.83 1.56 11.1 30.57 46.87 29.40 28.30 31.11 25.50 5.1 6.41 22.26 6.31 5.21 8.34 2.08 11.2 30.89 47.20 29.71 28.61 31.40 25.81 5.2 6.94 22.80 6.82 5.72 8.84 2.60 11.3 31.20 47.52 30.01 28.91 31.70 26.12 5.3 7.47 23.33 7.32 6.22 9.34 3.10 11.4 31.52 47.84 30.31 29.21 32.00 26.42 5.4 7.99 23.86 7.82 6.72 9.83 3.61 11.5 31.83 48.15 30.61 29.51 32.29 26.73 5.5 8.50 24.38 8.31 7.21 10.31 4.10 11.6 32.15 48.47 30.90 29.80 32.58 27.03 5.6 9.00 24.90 8.79 7.69 10.79 4.59 11.7 32.46 48.78 31.20 30.10 32.87 27.33 5.7 9.50 25.41 9.27 8.17 11.26 5.08 11.8 32.77 49.09 31.49 30.39 33.16 27.63 5.8 9.99 25.92 9.74 8.64 11.73 5.56 11.9 33.07 49.40 31.78 30.68 33.44 27.92 5.9 10.48 26.41 10.21 9.11 12.19 6.03 12.0 33.38 49.71 32.07 30.97 33.73 28.22 6.0 10.96 26.91 10.67 9.57 12.65 6.50 12.1 33.68 50.01 32.36 31.26 34.01 28.51 P = corresponding pressure value (test value) Ts = saturated temperature Td = value (dew point) used to calculate the superheating: SH = Tsuction - Td (Pevaporation) Tb = value (bubble point) used to calculate the subcooling: SC = Tb (Pliquid) - Tliquid Routine Maintenance 31
REFRIGERANT TABLES LBS - R.F. R-22 R-134a R-407C R-22 R-134a R-407C P (bar) Ts ( C) Ts ( C) Te( C) Ts ( C) Td Tb P (bar) Ts ( C) Ts ( C) Te( C) Ts ( C) Td Tb 12.2 33.99 50.32 32.65 31.55 34.29 28.80 18.3 49.71 66.12 47.48 46.38 48.82 43.95 12.3 34.29 50.62 32.93 31.83 34.57 29.09 18.4 49.94 66.35 47.70 46.60 49.03 44.17 12.4 34.59 50.92 33.21 32.11 34.85 29.38 18.5 50.17 66.57 47.91 46.81 49.24 44.39 12.5 34.88 51.22 33.49 32.39 35.12 29.66 18.6 50.39 66.80 48.12 47.02 49.44 44.60 12.6 35.18 51.51 33.77 32.67 35.40 29.94 18.7 50.62 67.02 48.33 47.23 49.65 44.82 12.7 35.47 51.81 34.05 32.95 35.67 30.23 18.8 50.84 67.24 48.55 47.45 49.85 45.04 12.8 35.76 52.10 34.32 33.22 35.94 30.51 18.9 51.07 67.46 48.76 47.66 50.06 45.25 12.9 36.05 52.39 34.59 33.49 36.21 30.78 19.0 51.29 67.68 48.96 47.86 50.26 45.47 13.0 36.34 52.68 34.87 33.77 36.47 31.06 19.1 51.51 67.90 49.17 48.07 50.46 45.68 13.1 36.63 52.97 35.14 34.04 36.74 31.34 19.2 51.74 68.12 49.38 48.28 50.67 45.89 13.2 36.91 53.25 35.40 34.30 37.00 31.61 19.3 51.96 68.34 49.58 48.48 50.87 46.10 13.3 37.19 53.53 35.67 34.57 37.26 31.88 19.4 52.18 68.55 49.79 48.69 51.06 46.31 13.4 37.47 53.82 35.94 34.84 37.52 32.15 19.5 52.40 68.77 49.99 48.89 51.26 46.52 13.5 37.75 54.10 36.20 35.10 37.78 32.42 19.6 52.61 68.98 50.19 49.09 51.46 46.73 13.6 38.03 54.38 36.46 35.36 38.04 32.68 19.7 52.83 69.19 50.40 49.30 51.66 46.94 13.7 38.31 54.65 36.72 35.62 38.29 32.95 19.8 53.05 69.40 50.60 49.50 51.85 47.14 13.8 38.58 54.93 36.98 35.88 38.54 33.21 19.9 53.26 69.61 50.80 49.70 52.04 47.35 13.9 38.85 55.20 37.24 36.14 38.80 33.47 20.0 53.47 69.82 50.99 49.89 52.24 47.55 14.0 39.13 55.48 37.49 36.39 39.05 33.73 20.1 53.69 70.03 51.19 50.09 52.43 47.75 14.1 39.40 55.75 37.74 36.64 39.30 33.99 20.2 53.90 70.24 51.39 50.29 52.62 47.95 14.2 39.66 56.02 38.00 36.90 39.54 34.25 20.3 54.11 70.45 51.58 50.48 52.81 48.15 14.3 39.93 56.28 38.25 37.15 39.79 34.51 20.4 54.32 70.65 51.77 50.67 53.00 48.35 14.4 40.20 56.55 38.50 37.40 40.03 34.76 20.5 54.53 70.86 51.97 50.87 53.19 48.55 14.5 40.46 56.82 38.75 37.65 40.28 35.01 20.6 54.74 71.06 52.16 51.06 53.37 48.75 14.6 40.72 57.08 38.99 37.89 40.52 35.27 20.7 54.94 71.26 52.35 51.25 53.56 48.94 14.7 40.98 57.34 39.24 38.14 40.76 35.52 20.8 55.15 71.47 52.54 51.44 53.74 49.14 14.8 41.24 57.61 39.48 38.38 41.00 35.77 20.9 55.35 71.67 52.73 51.63 53.93 49.33 14.9 41.50 57.87 39.73 38.63 41.24 36.02 21.0 55.55 71.87 52.92 51.82 54.11 49.53 15.0 41.76 58.12 39.97 38.87 41.48 36.26 21.1 55.76 72.07 53.10 52.00 54.29 49.72 15.1 42.01 58.38 40.21 39.11 41.71 36.51 21.2 55.96 72.27 53.29 52.19 54.47 49.91 15.2 42.27 58.64 40.45 39.35 41.95 36.75 21.3 56.16 72.47 53.48 52.38 54.65 50.10 15.3 42.52 58.90 40.69 39.59 42.18 37.00 21.4 56.35 72.67 53.66 52.56 54.83 50.29 15.4 42.78 59.15 40.93 39.83 42.42 37.24 21.5 56.55 72.87 53.85 52.75 55.01 50.48 15.5 43.03 59.40 41.17 40.07 42.65 37.48 21.6 56.75 73.07 54.03 52.93 55.19 50.67 15.6 43.28 59.66 41.40 40.30 42.88 37.73 21.7 56.95 73.27 54.22 53.12 55.37 50.86 15.7 43.53 59.91 41.64 40.54 43.11 37.97 21.8 57.14 73.47 54.40 53.30 55.55 51.05 15.8 43.77 60.16 41.87 40.77 43.34 38.21 21.9 57.34 73.66 54.59 53.49 55.73 51.24 15.9 44.02 60.41 42.11 41.01 43.57 38.44 22.0 57.53 73.86 54.77 53.67 55.91 51.43 16.0 44.27 60.66 42.34 41.24 43.80 38.68 22.1 57.72 74.06 54.95 53.85 56.09 51.62 16.1 44.51 60.90 42.57 41.47 44.02 38.92 22.2 57.92 74.26 55.14 54.04 56.27 51.81 16.2 44.76 61.15 42.80 41.70 44.25 39.15 22.3 58.11 74.46 55.32 54.22 56.45 52.00 16.3 45.00 61.39 43.03 41.93 44.47 39.39 22.4 58.30 74.66 55.51 54.41 56.62 52.19 16.4 45.24 61.64 43.26 42.16 44.70 39.62 22.5 58.49 74.86 55.69 54.59 56.80 52.38 16.5 45.48 61.88 43.49 42.39 44.92 39.86 22.6 58.69 75.06 55.88 54.78 56.98 52.57 16.6 45.72 62.13 43.72 42.62 45.14 40.09 22.7 58.88 75.25 56.06 54.96 57.16 52.76 16.7 45.96 62.37 43.95 42.85 45.37 40.32 22.8 59.07 75.45 56.25 55.15 57.34 52.95 16.8 46.20 62.61 44.17 43.07 45.59 40.56 22.9 59.26 75.65 56.43 55.33 57.52 53.14 16.9 46.44 62.85 44.40 43.30 45.81 40.79 23.0 59.45 75.85 56.62 55.52 57.70 53.33 17.0 46.68 63.09 44.62 43.52 46.03 41.02 23.1 59.65 76.04 56.80 55.70 57.88 53.53 17.1 46.92 63.33 44.85 43.75 46.25 41.25 23.2 59.84 76.23 56.99 55.89 58.06 53.72 17.2 47.15 63.57 45.07 43.97 46.47 41.48 23.3 60.03 76.43 57.17 56.07 58.24 53.91 17.3 47.39 63.80 45.29 44.19 46.68 41.70 23.4 60.22 76.62 57.36 56.26 58.42 54.10 17.4 47.62 64.04 45.52 44.42 46.90 41.93 23.5 60.42 76.80 57.54 56.44 58.60 54.29 17.5 47.86 64.27 45.74 44.64 47.12 42.16 23.6 60.61 76.99 57.72 56.62 58.77 54.48 17.6 48.09 64.51 45.96 44.86 47.33 42.38 23.7 60.81 77.17 57.91 56.81 58.95 54.66 17.7 48.33 64.74 46.18 45.08 47.55 42.61 23.8 61.00 77.34 58.08 56.98 59.12 54.85 17.8 48.56 64.97 46.40 45.30 47.76 42.83 23.9 61.19 77.51 58.26 57.16 59.29 55.03 17.9 48.79 65.20 46.62 45.52 47.97 43.06 24.0 61.39 77.68 58.43 57.33 59.46 55.21 18.0 49.02 65.43 46.83 45.73 48.19 43.28 24.1 61.58 77.83 58.60 57.50 59.62 55.39 18.1 49.25 65.66 47.05 45.95 48.40 43.50 24.2 61.78 77.98 58.77 57.67 59.78 55.56 18.2 49.48 65.89 47.27 46.17 48.61 43.73 24.3 61.97 78.11 58.93 57.83 59.94 55.72 P = corresponding pressure value (test value) Ts = saturated temperature Td = value (dew point) used to calculate the superheating: SH = Tsuction - Td (Pevaporation) Tb = value (bubble point) used to calculate the subcooling: SC = Tb (Pliquid) - Tliquid 32 Routine Maintenance
- TROUBLESHOOTING - GENERAL The aim of the following sections is to provide possible solutions to a number of anomalies that may arise on the unit. The information provided does not cover the entire range of possible cases. The activation of a safety device indicates abnormal operation; before resetting it, check and eliminate the causes. The following is a list of possible problems and the corresponding causes and solutions. CAUTION These operations must be carried out by specialist technical personnel possessing the legal requirements and in compliance with the safety standards in force. Before performing any checks on moving or live parts, switch the unit off at the mains isolator switch. FLOW ALARM 1. Check that the circulation of water is correct (circulating pumps on, valves open, water filter system not clogged,...). 2. Check that there is no air in the system and if necessary vent the air using the manual valves (if present) or alternatively check the correct operation of the automatic vents. 3. Check the wiring of the safety devices. 4. If the alarm persists, contact an Authorised Service Centre. HIGH PRESSURE ALARM 1. Check that the coils are free of obstacles, such as cardboard, nylon, leaves or dirt, and that the functional clearances described in the "Receipt-positioning" section are respected. 2. Check that the fan is working and that the direction of rotation is correct. 3. Check that the air and water temperatures are within the limits described in the technical data in the "General" section. 4. Check that the high pressure safety device is working correctly and check the related wiring. 5. If the alarm persists, contact an Authorised Service Centre. LOW PRESSURE ALARM 1. Check that the unit is operating within the envisaged temperature limits (water, air). 2. Check that the refrigerant circuit is pressurised and there are no refrigerant leaks. 3. Check that the low pressure safety device is working correctly and check the corresponding wiring. 4. If the alarm persists, contact an Authorised Service Centre. ANTIFREEZE ALARM 1. Check that the antifreeze set point value is not too high. 2. Check that the control set point value is not too low. 3. Check that the circulation of water is correct (circulating pumps on, valves open, water filter system not clogged,...). 4. If the alarm persists, contact an Authorised Service Centre. COMPRESSOR THERMAL OVERLOAD ALARM 1. Check the wiring. 2. If the alarm persists, contact an Authorised Service Centre. FAN THERMAL OVERLOAD ALARM 1. Check the wiring. 2. Check that the fan is free to move, without obstacles or obstructions (jammed bearings,...). 3. If the alarm persists, contact an Authorised Service Centre. THE UNIT IS NOISY - Check that the panelling is correctly fastened. - Check that the antivibration materials installed at the anchor points are in good condition. - Verificare, se presenti, le buone condizioni degli ammortizzatori posti sul compressore. - Check, if present, the condition of the shock absorbers on the compressor. - Check the correct direction of rotation of the compressor/s. - Check the correct balance of the fan/s. - If the unit is installed on antivibration mounts, check the effectiveness of the antivibration mounts, starting from the water pipes Troubleshooting 33
Clivet S.p.A. Feltre (BL) - ITALY tel. +39 0439 3131 fax +39 0439 313300 info@clivet.it Clivet España S.A. Madrid - SPAIN tel. +34 916 852344 fax +34 916 852353 info@clivet.es Clivet UK Ltd Sevenoaks (Kent) - U.K. tel. +44 (0) 1732 464141 Fax +44 (0) 1732 741575 info@clivet-uk.co.uk Fareham (Hampshire) - U.K. tel. +44 (0) 1489 572238 Fax +44 (0) 1489 573033 Clivet Nederland B.V. Amersfoort - Netherlands tel. +31 (0) 33 7503420 Fax +31 (0) 33 7503424 info@clivet.nl www.clivet.com All technical specifications and images presented in this manual are not binding and subject to change without notice. Forbidden any reproduction.