Reciprocating refrigeration compressor shutdown storage, long-term idle preservation and restart pre-check procedure

Reciprocating refrigeration compressor shutdown storage, long-term idle preservation and restart pre-check procedure

Reciprocating refrigeration compressor long-term idle preservation applies to standby unit or seasonal shutdown; improper storage causes rust, seal aging and oil degradation before restart. If shutdown period exceeds 3 months, crankcase oil shall be replaced before restart; oil will absorb moisture and form acid substance during long static storage. Xiteliduo reciprocating compressor long-term preservation procedure includes crankcase oil filling, nitrogen sealing, port blind plate installation and monthly crankshaft manual turning. Small 4-cyl reciprocating refrigeration compressor idle storage is often in cold environment; low temperature makes water condense inside crankcase and corrode bearing surface. Medium 4-cyl reciprocating refrigeration compressor preservation failure may be caused by omitted blind plate; moist air enters cylinder and rusts valve plate and piston surface. Large 4-cyl reciprocating refrigeration compressor long idle period requires crankshaft hand turning every 30 days; it prevents static deformation of connecting rod and bearing bush. Large 6-cyl reciprocating refrigeration compressor multi-cylinder structure needs inspection of all cylinder ports; any uncovered opening allows moisture ingress into compression chamber. Many users directly start unit after long idle time without pre-check. Skipping preservation pre-check increases startup failure probability by 56%. Single-unit two-stage refrigeration compressor low-stage side has higher vacuum risk during shutdown; air and moisture easily penetrate into low-stage circuit without sealing. Cascade unit high-stage reciprocating refrigeration compressor storage shall isolate from low-stage loop; cross system refrigerant migration may happen during long-term shutdown.

FAQ

Q1: What oil handling requirement is needed if reciprocating compressor shutdown exceeds 3 months? A1: Crankcase lubricant must be replaced before restart. Q2: What are the key preservation steps of Xiteliduo reciprocating compressor for long idle storage? A2: Oil filling, nitrogen sealing, blind plate mounting and monthly manual crankshaft turning. Q3: What corrosion risk exists for small 4-cyl reciprocating compressor stored in cold space? A3: Condensed water inside crankcase causes bearing surface corrosion. Q4: What problem arises if blind plates are not installed during medium 4-cyl compressor preservation? A4: Humid air enters cylinder and rusts valve plates and pistons. Q5: What is the purpose of manually turning crankshaft for large 4-cyl idle compressor every 30 days? A5: Avoid static deformation of connecting rod and bearing bush. Q6: What risk increases if starting idle compressor without pre-start inspection? A6: Startup failure probability rises by 56%. Q7: Why should high-stage and low-stage circuits be isolated during cascade unit storage? A7: Prevent refrigerant migration between two loops during long shutdown.