9. MAINTENANCE [Standard Maintenance Schedule]
76
3
Annual and 3-year Schedule (for 8,000 hours/year or less operation)
4
2-year and 4-year Schedule (for 8,000 hours/year or less operation)
5
6-year (Overhaul) (for 8,000 hours/year or less operation)
Part or Item Action
Category Type
Remarks
Every year
Every 3-year
Fixed/V A/W
Lubricating oil Replace
○
Fixed/V A/W
Joints, Bolts, Nuts
Tighten/Check
△
Fixed/V A/W
Gasket - Inter/Aftercooler condensate strainer
Replace
○
Fixed/V A/W
O-ring - Inter/Aftercooler condensate strainer Replace
○
Fixed/V A/W
Oil filter (secondary) Replace
●
Fixed/V A/W
Consumable parts - Suction throttle valve Replace
●
Fixed A/W
Seal washer - Suction throttle valve Replace
●
Fixed A/W
Seal gasket - Suction throttle valve Replace
●
Fixed A/W
Thermistor, Pressure sensor, PCB other Electric parts
Check
▲
Fixed/V A/W
Change any operating parts in need of replacement.
Cooling fan
Check for crack/Clean
▲
Fixed/V A/W
Orifice - Aftercooler condensate Check/Clean
▲
Fixed/V A/W Clean as required.
Orifice and Check valve - Intercooler condensate
Check/Clean
▲
Fixed/V A/W Clean as required.
Aftercooler/Intercooler/Oil cooler Check/Clean
▲
Fixed/V A/W
Hi-Precooler Check/Clean
▲
Fixed/V
A only
Demister - Drain separator Check/Clean
▲
Fixed/V A/W
3-Way solenoid valve & Capacity control system
Check
▲
Fixed A/W Replace as required.
Blowoff solenoid valve Check
▲
V A/W
Air relief valve
Check/Clean
▲
Fixed/V A/W
Protection, Safety device Check
▲
Fixed/V A/W
Change any operating parts in need of replacement.
Motors
Check/Clean
▲
Fixed/V A/W Measure insulation resistance and clean.
Relay (Drain solenoid valve) Replace
●
Fixed/V A/W
Part or Item Action
Category Type Remarks
2-year 4-year
Fixed/V A/W
Control line filter element Replace
○
Fixed A/W
Blowoff solenoid valve (1) (2) Replace
●
V A/W
Consumable parts - Oil pump Replace
●
Fixed/V A/W
Check valve Replace
●
Fixed/V A/W
Solenoid valve - Intercooler/Aftercooler condensate
Replace
●
Fixed/V A/W Replace the strainer together.
Check valve and Strainer - Intercooler condensate
Replace
●
Fixed/V A/W
Check valve - Control line Replace
●
Fixed A/W
VFD (Variable Frequency Drive) Check
▲
V A/W Clean the heat sink fin
Cooling capacity for VFD Replace
●
V A/W
Cooling fan for control panel Replace
●
Fixed/V A/W
PC Board - Inverter, Module, FFC (Flat cable)
Check/Clean/
Replace
●
V A/W
Check for contamination and discoloration. Replace if
faulty. May be used further if appropriate. (Except FFC)
Part or Item Action Category
Type
Remarks
Fixed/V A/W
Airend (1st-stage, 2nd-stage) Replace
●
Fixed/V A/W A whole airend is replaced with a new
Main motor bearing Replace
●
Fixed/V A/W
Fan motor bearing Replace
●
Fixed/V A/W
Demister - Drain separator Replace
●
Fixed/V A/W
3-Way solenoid valve Replace
●
Fixed A/W
Oil strainer (primary) Replace
●
Fixed/V A/W
Control line filter - Condensate Replace
●
Fixed A/W
Oil level gauge Replace
●
Fixed/V A/W
Shaft seal - Main motor Check/Clean
▲
Fixed/V A/W
Temperature control valve Replace
●
Fixed/V A/W
Smoothing condenser - Controller Replace
●
V A/W
PC board assembly
Check/Clean/
Replace
●
Fixed/V A/W
Check for contamination and discoloration.
Replace if faulty.
May be used further if appropriate.
PC board - Inverter
Check/Clean/
Replace
●
V A/W
Check for contamination and discoloration.
Replace if faulty.
May be used further if appropriate.
Electromagnetic contactor Check
▲
Fixed/V A/W Replace as required.
Lithium battery Replace
●
Fixed/V A/W
※ For the 3rd overhaul, the air ends shall be replaced with new ones.
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