69
9. MAINTAINING THE DSP [Standard Maintenance Schedule]
Description
Maintenance Classification Model/Type
Remarks
Oil
Replace
○
Fixed/VSD
Joints, Bolts, Nuts
Tighten/Check
△
Fixed/VSD
Air Intake Filter
Replace
○
Fixed/VSD
Oil Filter (secondary side)
Replace
○
Fixed/VSD
Oil Strainer (first side)
Clean
▲
Fixed/VSD
Blow-off Valve Sheet Gasket
Replace
●
Fixed Speed only
Suction Throttle Valve Seal Gasket
Replace
●
Fixed Speed only
Thermister, Pressure sensor, PCB, other Electric ports
Check
▲
Fixed/VSD
Replace parts if failure found.
Aftercooler Drain Pipe Orifice
Check/Clean
▲
Fixed/VSD
Intercooler Drain Pipe Orifice & Check Valve
Check/Clean
▲
Fixed/VSD
Aftercooler
Check/Clean
▲
Fixed/VSD
Intercooler
Check/Clean
▲
Fixed/VSD
Oil Cooler
Check/Clean
▲
Fixed/VSD
Blow-off air cooler
Check/Clean
▲
Fixed/VSD
Purge air solenoid (For purge and anti-reverse rotation in electrical outage)
Check
▲
VSD only
Replace parts if failure found.
Demister
Check/Clean
▲
Fixed/VSD
Airend Casing Jacket
Check/Clean
▲
Fixed/VSD
3-way Solenoid Valve, Drain Solenoid Valve, Capacity Control Device
Check
▲
Fixed Speed only Replace if necessary.
Safety Valve
Check/Clean
▲
Fixed/VSD
Protection, Safety Device
Check
▲
Fixed/VSD
Replace parts if failure found.
Motor
Check
▲
Fixed/VSD
Measure insulation resistance and clean.
Description
Maintenance Classification Model/Type
Remarks
Control Line Filter Element
Replace
○
Fixed Speed only
Purge air solenoid (For purge and anti-reverse rotation in electrical outage)
Replace
●
VSD only
Oil Pump Oil Seal
Replace
●
Fixed/VSD
Oil Pump Bearing
Replace
●
Fixed/VSD
Check Valve
Replace
●
Fixed/VSD
Drain Discharge Solenoid Valve
Replace
●
Fixed/VSD
Check Valve for dranage & control air pipng
Replace
●
Fixed/VSD
Intercooler Drain Pipe Strainer
Replace
●
Fixed/VSD
VFD (Variable Frequency)
Check
▲
VSD only
Cooling Capacity for VFD
Replace
●
VSD only
Clean if necessary.
Description
Maintenance Classification Model/Type
Remarks
Motor Bearing
Replace
●
Fixed/VSD
Air End Assembly
Replace
※●
Fixed/VSD
Replace by overhauled Air End Ass’y.
Bearing – Gear Case
Replace
●
Fixed/VSD
Demister Replace
●
Fixed/VSD
3-way Solenoid Valve
Replace
●
Fixed Speed only
Oil Strainer (first side)
Replace
●
Fixed/VSD
Motor Shaft Seal parts
Check/Clean
▲
Fixed/VSD
Temperature Control Valve
Replace
●
Fixed/VSD
Oil Level Gauge
Replace
●
Fixed/VSD
Battery
Replace
●
Fixed/VSD
Smoothing Capacity for VFD
Replace
●
VSD only
Control Line Filter
Replace
●
Fixed Speed only
※
Discharge Pressure 0.75MPa models
:
48,000h, Discharge Pressure 0.93MPa models
:
32,000h
3
Annual Schedule
(for yearly 8,000-or-less operating hours)
4
2-Year Schedule
(for yearly 8,000-or-less operating hours)
5
6-Year Schedule: Overhauling
(for yearly 8,000-or-less operating hours)