TSMC 116 S

Häufige Probleme

• Suction/discharge valve plate wear or breakage causing capacity loss and audible knocking
• Oil carryover or foaming with the ammonia charge leading to low oil pressure trips
• Capacity control (cylinder unloader) solenoid or linkage sticking
• Shaft seal (gland) leakage
• Liquid slugging from insufficient suction superheat, damaging valves and pistons
• Oil separator inefficiency causing excess oil circulation into the refrigerant system
• Suction strainer fouling reducing capacity and causing low suction pressure

Prüfliste

• Inspect suction and discharge valve plates for wear, pitting or broken reeds at the scheduled interval
• Check the shaft seal for oil weeping or leakage
• Verify crankcase oil level, pressure and condition, checking for refrigerant dilution or foaming
• Check capacity control unloader operation on all cylinder banks (4 HP + 12 LP)
• Inspect and clean the suction strainer
• Verify safety and relief valve settings and test dates
• Check cylinder head and valve cage bolting torque per the maker's schedule
• Log suction/discharge pressure and temperature and compare to baseline for signs of valve leakage
• Inspect crankshaft/connecting rod big-end bearing clearance at major overhaul
• Check coupling and motor alignment

Wartungsintervalle

Typische Verschleißgrenzen

Die Bereiche sind für diese Bauklasse typisch. Maßgeblich sind stets die Herstellerunterlagen zur jeweiligen Seriennummer.

Kritische Ersatzteile

• Suction/discharge valve plate assemblies (HP and LP)
• Shaft seal kit
• Piston rings and gudgeon pin bushings
• Big-end and main bearing shells
• Safety relief valve
• Oil pump
• Gasket and O-ring overhaul kit

Sicherheit

• Ammonia (R717) is toxic and flammable in the right concentration - a leak response requires SCBA, not general PPE
• High-pressure refrigerant system - isolate and pump down before opening any part of the compressor
• Hot discharge lines and cylinder heads present a burn hazard
• Liquid refrigerant slugging can cause violent valve or piston failure - never bypass low suction superheat protections
• Rotating flywheel/coupling guards must be fitted and secure before start

Klassenbesichtigung

Refrigeration compressors serving classed cargo/provision systems are typically included in Continuous Survey Machinery (CSM) with periodic function tests of safety cut-outs (high pressure, low oil pressure, motor overload); class will want relief valve test certificates and safety trip test records.

Geschätzte Lebensdauer: The crankcase/frame design life typically extends well beyond 100,000 running hours with proper maintenance; valve plates and shaft seals are the practical wear-limiting items and are replaced on condition rather than a fixed lifetime.