Hitachi DSP-110A6N, Instruction Manual

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9. MAINTENANCE [Standard Maintenance Schedule]
78
3
Annual Schedule
(for 4,000 hours /year or less operation)
4 3-year and 4-year Schedule
(for 4,000 hours /year or less operation)
5 6-year (Overhaul)
(for 4,000 hours /year or less operation)
Part or Item Action Category
Type
Remarks
Fixed/V A/W
Lubricating oil Replace ○ Fixed/V A/W Replace every 8,000h operating hour or 2 year, whichever comes earlier)
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 strainer (primary) Clean ▲ Fixed/V 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
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 (air side) Check/Clean ▲ Fixed/V A/W Clean as required.
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.
Part or Item Action
Category Type
Remarks
3-year 4-year Fixed/V A/W
Control line filter element Replace ○ Fixed 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 ※
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
Relay (Drain solenoid valve) 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)
※ When the power-saving operation is used, the parts need to be replaced every 2 years.
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