Refrigeration equipment servicing and installation

Other system components This chapter describes the function and operation of a number of components not previously covered in detail. Solenoid valve This is an electrically operated magnetic valve. It consists of a coil wound around a sleeve of non-magnetic substance. When energized, the coil carries an electrical current and becomes a magnet. Inside the […]
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 System control valves Crankcase pressure regulator As a compressor starts, a heavy load is imposed on the drive motor. The crankcase pressure will be at its highest against normal or abnormal loading. The function of the regulator is to keep the pressure in the crankcase to a reasonable level to protect the motor from overload. […]
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 System control valves Crankcase pressure regulator As a compressor starts, a heavy load is imposed on the drive motor. The crankcase pressure will be at its highest against normal or abnormal loading. The function of the regulator is to keep the pressure in the crankcase to a reasonable level to protect the motor from overload. […]
Continue reading…

 System control valves Crankcase pressure regulator As a compressor starts, a heavy load is imposed on the drive motor. The crankcase pressure will be at its highest against normal or abnormal loading. The function of the regulator is to keep the pressure in the crankcase to a reasonable level to protect the motor from overload. […]
Continue reading…

 Pipework and oil traps Installation principles The design and correct installation of the system pipework contributes to the reliability of the equipment, irrespective of the type. Design problems seldom occur with packaged systems because they would be overcome during development, but attention must be paid to other systems. When a large installation is programmed, a […]
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 Pipework and oil traps Installation principles The design and correct installation of the system pipework contributes to the reliability of the equipment, irrespective of the type. Design problems seldom occur with packaged systems because they would be overcome during development, but attention must be paid to other systems. When a large installation is programmed, a […]
Continue reading…

 Pipework and oil traps Installation principles The design and correct installation of the system pipework contributes to the reliability of the equipment, irrespective of the type. Design problems seldom occur with packaged systems because they would be overcome during development, but attention must be paid to other systems. When a large installation is programmed, a […]
Continue reading…

Fault finding guide for vapour compression systems This checklist will assist in the quick diagnosis of faults on vapour compression systems. Visual fault finding Compressor not running 1 Main supply isolator open. 2 Fuse blown. 3 Overload open circuit. 4 Control circuit open (low pressure switch, high pressure switch or thermostat). Fixture temperature too high […]
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Fault finding guide for vapour compression systems This checklist will assist in the quick diagnosis of faults on vapour compression systems. Visual fault finding Compressor not running 1 Main supply isolator open. 2 Fuse blown. 3 Overload open circuit. 4 Control circuit open (low pressure switch, high pressure switch or thermostat). Fixture temperature too high […]
Continue reading…

Fault finding guide for vapour compression systems This checklist will assist in the quick diagnosis of faults on vapour compression systems. Visual fault finding Compressor not running 1 Main supply isolator open. 2 Fuse blown. 3 Overload open circuit. 4 Control circuit open (low pressure switch, high pressure switch or thermostat). Fixture temperature too high […]
Continue reading…