Typical Maintenance Standard (B) Of Air Compressor - Hitachi HISCREW V PLUS NEXT Series Instruction Manual

8. PERIODIC MAINTENANCE [Maintenance Standards (B)]
8.3 Typical Maintenance Standard (B) of Air Compressor...In case of annual run hour less than 3,000 hours
Maintenance part and item
Oil level gauge
Discharge temp.
Relief valve
Lubricant (genuine synthetic oil)
Mechanical seal
Motor
Motor's cooling fin
Grease Reservoir
Air intake filter element
Lubricant (genuine synthetic oil) Replacement
Oil filter element
Oil level gauge
Oil separator element
Solenoid valve
Cooling fans
DCBL controller cooling fan
Fan inverter
Motor
Electric panel, instruments, sensors Inspection/Cleaning
Pipe joints
Oil cooler, Aftercooler
Oil port O-ring, plug O-ring
Oil temperature control valve
Consumable Parts Suction throttle valve ※ Replacement
DCBL controller cooling fan
Fan motor bearing
Piston of minimum pressure valve / check valve ※ Replacement
Coupling elastic body
Thermistor
Oil temperature control valve
Suction pipe
Check valve (1/4 inch)
O-ring (Air end)
O-ring (Flange)
O-ring, oil separator tank
DCBL motor bearing
Mechanical seal
Compressor Air end bearing
Controller smoothing capacitor
CPU printed circuit board,
power PCB
Fan inverter
※ Replace these parts every 4 calendar years or when the HISCREW has loaded/unloaded total 1,000,000 times,
whichever comes earlier. For the total load/unload times, watch the digital monitor.
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Inspection time
Check
Daily 1-Month 1-Year 2-Year 4-Year 8-Year
Oil level check
○
Discharge temp. check ○
Performance check
○
Replenish/
○
Analysis
Oil leak check
○
Greasing
○
Cleaning
Cleaning
Replacement
Replacement
Replacement
Replacement
Performance check
Crack check/Cleaning
Crack check/Cleaning
Crack check/Cleaning
Crack check/Cleaning
Loose check
Cleaning
Replacement
Inspection/Cleaning
Replacement
Replacement
Replacement
Inspection
Replacement
Replacement
Replacement
Replacement
Replacement
Replacement
Replacement
Replacement
Replacement
Replacement
Check/Clean/Replace
Replacement
Oil level must be within red lines during operation.
Must be between 65℃ and 100℃.
Check by hand.
Replenish every 1,000 to 1,500 hours
Sampling analysis every 3,000 hours
If the oil leak is 3 cc/h or higher, replace the seal
even before 8-year (24,000 hours) operation.
Use "RMS Grease"
Clean once for every 2 grease replenishments.
○
Clean if the error code of an element clogging
appears on the digital monitor. Replace whenever
○
the number of times of cleaning has reached 5
times even within two year interval.
○
●
●
Replace the housing and square ring as well.
●
●
●
●
Clean cooling fins and duct.
●
● 1M ohm or more at DC500 V Mega.
Terminal refastening, electric line cover check and cleaning.
●
●
●
●
Change O-ring.
●
Replace the cap seal, valve plate, and O-ring. Clean.
●
● Including cooling fan in the starter/control box.
If not so, clean it and continue to use it.
●
● Replace check valve spring, O-ring at the same time.
If not so, clean it and continue to use it.
●
●
●
●
Locate it on the oil-scavenging pipe from the shaft seal.
●
●
●
Replace 1/2 stop valve O-ring at the same time.
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●
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●
●
If it is dirty or shows a change in color, replace it.
●
If not so, clean it and continue to use it.
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Reference
Note
page No.
20,21
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