A List Of Shutdowns Not Displayed On Instrument Panel - Hitachi HISCREW 2000 Series Instruction Manual

5. TROUBLESHOOTING [A List of SHUTDOWNS Not Displayed on Instrument Panel]

5.4 A List of SHUTDOWNS Not Displayed on Instrument Panel

Ask your dealer or Hitachi's Service Station if the cause of malfunction is unknown or with
REMARKS column.
SYMPTOMS AND TROUBLES
Wire breaking
Motor noise
Print circuit board, relays, failures, fuse
blown-out, transformer failure.
inaudible
Motor malfunction
Voltage drop
Wires too thin
Motor noise
Motor abnormal
audible
Start Solenoid Valve*: Failed.
Compressor's revolution unable
Modulator Valve / Blow-off Solenoid Valve fault
Pressure Gauge Indication fault
Discharge
Pressure Leak in Pipes
decreased
Intake Filter clogging
Oil Separator clogging
Pressure Regulating Valve fault
Discharge
Suction Throttle Valve fault
Pressure
Mechanical Sealing damage
Increased
Pressure Gauge Indication fault
Excess Over Rated Pressure
Relief Valve
operated
Relief Valve: Incorrectly adjusted or failed.
Poor operation of Oil Temperature Control Valve
Discharge Temp.
too high
Suction Air Temperature too high
Oil Scavenge Pipe System clogging
Lubricant
consumption Oil Separator clogging
excessive
Oil level: Not between the red lines on oil level gauge.
Lowered or unbalanced voltage
Current value
large
Abnormal abrasive resistance in the rotating part (oil deterioration, seizure)
Unload setting for pressure control valve etc. is low.
Current value
Intake Filter clogging
small
Over-voltage
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POSSIBLE CAUSES SOLUTIONS
Replace of wire
Replace
Repair or replace
Change Transmitter Capacity when POWER CAPACITY too small
Replace Wires to ones of standard size
Repair or replace
Replace
Disassemble and inspection of the Compressor Main Body
Readjust or Replace
Replace
Refastening/Packing change
Clean or Replace Element
Replace Element
Readjustment
Disassemble and check/Packing change
Replace
Replace
See "Discharge pressure increased" above.
Readjust, Repair or Replace
Replace
More Ventilation
Clean or Replace Recovery Orifice
Replace Element
Keep oil level between the red lines.
Adjustment of power and voltage
Inspection, flashing, oil change
Re-adjustment
Clean or Replace Element
Adjustment of power and voltage
To be continued on page 27.
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REMARKS