TECHNICAL SPECIFICATIONS
Semi sealed
compressor
• Commercial type
• Refrigerating fluid : R 134 a (CH2F/CF3)
• Nominal power : ½ CV
• Refrigerating power : 1080 W
– Condensing temperature : + 45°C
– Evaporating temperature : - 5°C
Air condenser
• Forced convection
• Copper tube and aluminum blades
• Fan electric power : 80 W
• Air flow : 0,4 m3/sec.
Liquid tank
• Stainless steel, vertical
• Capacity : 3.1 dm3
Different expansion methods
• Capillary expansion
• Expansion by internal equalization thermostatic expansion valve
• Expansion by external equalization thermostatic expansion valve
• Expansion by calibrated orifice only
Evaporators
• Forced convection
• Copper tube and aluminum blades
• Fan electric power : 43 W
• Refrigerating power : 590 W - To=- 8°C / Dt=8 k
Other refrigerating components
• Oil separator
• Dehydrator
• Electromagnetic valves
• Manual valves, low pressure regulation valve
• Liquid-vapor exchanger
• Shock proof liquid bottle |
Instruments
• Pressure switches, HP (high pressure) and BP (low pressure) manometers
• Rotameter
• Digital thermometer with Pt 100 probe
• Remote control and relay p.c. board for the simulation of electric
failures
Failures list
• Defect due to a lack of charge
• Defect due to an excess of charge
• Bad exchanges at the condenser (fouling up of the condenser)
• Bad exchanges at the evaporator (fouling up of the evaporator)
• Cloudy dehydrator
• Leakage of the electrovalve
• Bad functioning of the expansion valves
• Bad functioning of the constant pressure valve
• Over intensity on the compressor engine
• Cut of a phase on the compressor engine
• Stopping of the condenser fan
• Stopping of the evaporator fan
• Defect of the electrovalve coil
• Defect of the safety pressure switches (HP and BP)
• Defect of the mechanism designed for delaying the short cycle
• Defect of the regulation thermostat
• Defect of the defrosting safety (catch)
• Defect of the defrosting resistance
• Overheating of the compressor
• Adjustment of the static pressure
• Thermostatic adjustment
• Pump down
• Cut of two phases
• Overheating of the engine
• Defect of the compressor valve |
