AIR CONDITIONING - Rafstjorn

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13. Electrical Connections WARNING! It is absolutely necessary, before making any connections, to use a suitable tester to check the supply voltage. This must be the same as the voltage indicated on the technical data plate. The user must furnish and install, upstream from the unit, an isolating switch with a pre-fuse and capacity as specified on the technical plate in order to be able to perform maintenance on the unit in the absence of electricity. • Check the supply voltage and frequency; • Check that supply voltage and frequency are compatible with those for the unit. • Interrupt both main power and auxiliary power before working on the system; • Select connection cables (not supplied) according to EN60204-1 Standards • On the main power supply lines, in preference install an omni-pole automatic switch, curve type C, eventually complete of another differential switch. Alternatively, besides the isolating omni-pole switch, install a safety fuse, retarded, aM type; • Check that power cables are installed with a sufficient distance from alarm cables. • Check that the supply voltage of the cooling unit is disconnected when opening the cabinet doors. • To connect power supply, use cables with section suitable to the power absorbed by the users. These cables must be compliant with current standards. ATTENTION! The inobservance of these instructions might provoke damages or malfunction of components and the warranty shall become forthwith void. E/0304/31A/28
14. Start-up Supply voltage to the cooling unit. If the temperature in the room is lower than the temperature set on the thermostat the evaporator fan will start and will cause air recirculation in the cabinet. If the temperature in the room is higher than the temperature set on the thermostat then the compressor and the condenser fan will start. They will operate until the temperature in the room falls below the value set on the thermostat. Note! Avoid sudden stops and re-starts. At least 3 minutes should elapse between a stop and the next re-start. 15. Adjusting the Temperature Note! Excessively low cabinet temperatures may cause serious problems to the cabinet parts and require an increased power consumption for a higher cooling capacity. Mechanical Thermostat Adjustment The adjustment should be made by experienced personnel by acting on the thermostat pin with a screwdriver after having switched off the voltage and having removed the unit's front panel. The thermostat has a 4°C hysteresis, therefore the compressor will start at a temperature, which is 4 Kelvin above the stop point. After the adjustment replace the front panel and re-supply voltage. Adjustment screw E/0304/31A/29
Page 1 and 2: A/C UNITS COMPACT-AIR 230/1/50-60 4
Page 3 and 4: Contents Page Introduction 4 Techni
Page 5 and 6: WHERE AND HOW TO STORE THIS MANUAL
Page 7 and 8: Technical Data CVC 28 002yy - CVC 4
Page 9 and 10: Capacity diagram CVC 14 002 yy (at
Page 11 and 12: Capacity diagram CVC 28 002 yy (at
Page 13 and 14: Dimensions B C A Type CVC 07 CVC 14
Page 15 and 16: 2. Unit Identification This unit ca
Page 17 and 18: Air flow inside the unit Outdoor ap
Page 19 and 20: 6. Precautions when handling the Un
Page 21 and 22: Cut-outs for CVC 07 002yy 308 68 17
Page 23 and 24: Cut-outs for CVC 28 002yy - CVC 41
Page 25 and 26: 10.5 CAPILLARY PIPE EXPANSION SYSTE
Page 27: 12.6 REGULATING THERMOSTAT The mech
Page 31 and 32: 18.3 REPLACEMENT OF PARTS To guaran
Page 33 and 34: 20.4 ALUMINIUM CASING - CVCAL With
Page 35 and 36: 21.3.2 TASKS ASSIGNED TO PLANT MANA
Page 37 and 38: · eliminate pressure from the enti
Page 39 and 40: 23. Faults, Probable Causes, Possib

AIR CONDITIONING - Rafstjorn

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