mori seiki NL1500/500, Maintenance Manual

Page: 194 / 245

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HYDRAULIC UNIT ALARMS
194
2
Pressure
fluctuation
Air entry into piping Item 4
Pressure gage reading abnormal
Item 1
When necessary to replace the pressure gage, contact the
Mori Seiki Service Department for assistance.
3
Abnormal
noise
generated
Hydraulic oil viscosity inappropriate “OILS” (page 59)
Low oil level in tank
“Checking Oil Level/Replenishing Oil” (page 94),
“Replacing Oil” (page 94)
Suction strainer clogging “Cleaning Suction Strainer and Tank” (page 96)
Pressure fluctuation Item 2
Pump component damage/wearing Contact the Mori Seiki Service Department for assistance.
4 Oil leakage
Oil leakage from connections Tighten connections.
Hose deterioration, damage Contact the Mori Seiki Service Department for assistance.
Oil leakage from pump Contact the Mori Seiki Service Department for assistance.
Item Status Cause Reference Items/Recovery Procedures