- Use of a pair of pressure gauges, an ammeter and the compressor specifications.
- Examine the operating discharge and suction pressure apart from the current.
- Using the compressor specifications, compare these readings/observations with the actual pressures noticed during the examination.
- Inaccuracies in the measured current may be within +/- 12% due to variations in power voltage and human errors while reading.
- Do not check compressor operation by closing the suction valve to see the extent of minimum suction achieved as it may damage the compressor due to heat generated inside.
- Do not test the compressor in the open with ordinary air. Instead use dry nitrogen and adopt correct testing procedure as recommended by Godrej.
Common problems