Howden WRVi, WRVi255, WRVi321 Service Manual

Howden WRVi255 is a rotary, oil-injected compressor designed for refrigeration applications. It features capacity control achieved through a hydraulic slide valve, allowing for efficient operation at varying loads. The WRVi255 utilizes a robust oil system that lubricates bearings, balances pistons, and seals the shaft. This compressor is engineered for long-lasting performance and ease of maintenance.

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Howden WRVi255 Service Manual | Manualzz

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Key features

  • Rotary Compressor
  • Oil-Injected
  • Capacity Control
  • Hydraulic Slide Valve
  • Oil System
  • Long-lasting
  • Easy Maintenance

Frequently asked questions

Capacity control is achieved by a hydraulically controlled slide valve that allows for internal gas recirculation, adjusting capacity from 100% down to 10%.

The WRVi255 has an oil system that delivers oil to bearings, balance piston, shaft seal, compression chamber, and hydraulic actuator.

The manual recommends mineral oil, polyol ester oil, poly alkylene glycol oil, and alkyl benzene oil, but the specific selection depends on the refrigerant and application.
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