Record suction/discharge pressures, oil temperature, differential oil pressure, and motor amp draw. Check for unusual vibration or noise.
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High discharge temperatures are often a sign of insufficient oil flow or failing cooling systems. howden xrv 127 manual
Equipped with a capacity slide valve that alters the effective rotor length, allowing infinitely variable capacity control from 100% down to approximately 10-15%.
Using genuine Howden replacement parts—especially for critical elements like bearings and shaft seals—ensures that the compressor maintains its original efficiency ratings and operational safety margins for decades to come.
Oil must pass through a water-cooled shell-and-tube heat exchanger, an air-cooled radiator, or a thermosiphon system to reject compression heat before re-injection. This link or copies made by others cannot be deleted
A proper shutdown sequence is equally important to prevent damage and prepare the unit for the next start:
If the compressor is to be off for an extended period, the following steps are vital to prevent damage such as brinelling of anti-friction bearings:
Shaft Seal Inspection: The mechanical shaft seal is a wear item. Inspect for oil leaks regularly. A minor "weep" is often normal for lubrication, but a steady drip indicates the need for replacement. Try again later
Before executing any maintenance detailed in the manual, strict safety procedures must be observed:
Foundation and Alignment: The compressor must be mounted on a level, vibration-free base. Accurate alignment between the compressor and the motor is vital to prevent bearing failure and excessive vibration.
immediately upon startup. 4.2 Capacity Control Adjustment