Hitachi NEXT Series User Manual

84
9. MAINTENANCE [Standard Maintenance Schedule]
Part or Item Action Category Type Remarks
Control line filter element Replace
○
Fixed
Blowoff solenoid valve (1) (2) Replace
●
V
Consumable parts - Oil Pump Replace
●
Fixed / V
Check valve Replace
●
Fixed / V
Solenoid valve - Intercooler/ Aftercooler condensate Replace
●
Fixed / V Replace the strainer together
Check valve & strainer- Intercooler condensate Replace
●
Fixed / V
Check valve - Control line Replace
●
Fixed
DCBL Controller
Check / Clean
▲
V Clean the fin and duct.
Controller fan (1), DCBL controller Replace
●
V
Cooling fan for control panel Replace
●
Fixed Clean the fin (Air-cooled type)
Cooling fan for control panel Replace
●
Fixed / V Except 45/55kW fixed speed type
Part or Item Action Category Type Remarks
Airend (1st-stage, 2nd-stage) Replace
●
Fixed / V A whole airend is replaced with a new
Main motor bearing Replace
●
Fixed / V
Fan motor bearing Replace
●
Fixed / V Air-cooled type
Demister - Drain separator Replace
●
Fixed / V
3-Way solenoid valve Replace
●
Fixed
Oil strainer (primary) Replace
●
Fixed / V
Control line filter - Condensate Replace
●
Fixed
Oil level gauge Replace
●
Fixed / V
Shaft seal - Main motor
Check / Clean
●
Fixed / V
Temperature control valve Replace
●
Fixed / V
Smoothing condenser - Controller Replace
●
V
PC board assembly (Including LCD)
Check / Clean
/ Replace
●
Fixed / V
Check for contamination and discoloration.
Replace as required.
Can be used further if appropriate.
Power PCB - Controller
Check / Clean
/ Replace
●
V
Communication board
Check / Clean
/ Replace
●
Fixed / V
Electromagnetic contactor Check
▲
Fixed / V Replace as required.
Lithium battery Replace
●
Fixed / V
Fan inverter Replace
●
Fixed / V Air-cooled type
4
2-Year Schedule
(for 8,000 hours/year or less operation)
5
6-Year Schedule: Overhauling
(for 8,000 hours/year or less operation)
Part or Item Action
Category
Type Remarks
1-year 3-year
Orifice- Aftercooler condensate Check / Clean
▲
Fixed / V Clean as required.
Orifice and check valve- Intercooler condensate Check / Clean
▲
Fixed / V Clean as required.
Aftercooler/ Intercooler/ Oil cooler
Check / Clean
▲
Fixed / V
Hi-Precooler
Check / Clean
▲
Fixed / V
Clean as required. (Air-cooled 125psi (0.86)MPa type)
Demister - Drain separator Check / Clean
▲
Fixed / V
3-Way solenoid valve & capacity control system Check
▲
Fixed Replace as required.
Blowoff solenoid Valve Check
▲
V
Air relief valve
Check / Clean
▲
Fixed / V
Protection, Safety device Check
▲
Fixed / V
Change any operating parts in need of replacement.
Motors Check / Clean
▲
Fixed / V
Clean and measure the insulation for any resistance.
Relay (Drain solenoid valve) Replace
●
Fixed / V

Hitachi NEXT Series Specifications

General

Brand	Hitachi
Model	NEXT Series
Category	Air Compressor
Language	English