In order to diagnose any refrigeration fault quickly and accurately, a set procedure must be followed. The procedure described here takes the form of seven…
Category: Refrigerator service diagnosis and repairs
The sources of noise are numerous, and in some cases are entirely dependent upon the location and the type of building structure. Common sources of…
Sealed systems such as domestic refrigerators and freezers need to be treated differently, since there may not be provision for fitting gauges unless line tap…
Two types of thermostat are commonly used to control the temperature of a refrigerated space or product by stopping and starting the compressor. The most…
There are many different makes of pressure controls. Designs may vary but the principle of operation is basically the same: single pressure models respond to…
Prolonged operation at high discharge pressures and temperatures, excessive motor starting, fluctuating voltage conditions, shortage of refrigerant charge and shortage of oil in the compressor…
Scaling Any type of water cooled condenser is prone to scaling of the interior surfaces of the water tubing. The rate at which the scale…
Like low side purging, the practice of purging from the high side is also unacceptable and must be discontinued. When it is certain that non-condensables…
This condition is probably more common than faults causing low suction pressures, especially during the summer months when ambient temperatures are higher. Causes and corresponding…
Most smaller open drive and some direct drive semi-hermetic compressors employ this type of crankshaft seal. They are often a cause of noise complaints (squeaking)…