Refrigeration Compressor · Compressors
Grasso (GEA) Grasso V 700 800/15 — 15 bar.
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| Oil change/analysis | commonly every 2,000-4,000 running hours or annually - confirm against maker manual |
|---|---|
| Valve plate inspection | at scheduled opening, typically every 8,000-12,000 h depending on duty |
| Shaft seal renewal | on evidence of leakage beyond the allowable limit, or at major overhaul |
| Safety/relief valve test | annually, per class/flag requirement for pressure vessels and refrigeration systems |
| Ammonia leak detection system check | commonly a monthly function test, per class/statutory requirement |
| Shaft seal leakage | any continuous weeping beyond the maker's allowable drip rate calls for seal renewal - confirm against maker limit |
|---|---|
| Valve plate wear | no generic figure - assess against the maker's inspection criteria at each opening |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Ammonia refrigeration compressors of this type typically fall within the scope of the vessel's refrigeration plant survey; class wants records of scheduled valve/seal maintenance, current safety/relief valve test certificates, and evidence that ammonia detection and emergency systems are tested per the statutory schedule.
Estimated lifetime: Major overhaul (valve plates, seals) is commonly due in the order of 8,000-12,000 running hours depending on duty and refrigerant handling practice - treat as a planning guide, not a fixed limit.
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