EVERDIGM EPG05, Operation & Maintenance Manual

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9. Trouble shooting
Trouble Cause Remedy
Grab does
not work
Pressure is not
applied to piping
Electric system fault
(if voltage is not detected)
Check the electric fuse or wiring for
operating switch and solenoid valve.
Solenoid valve fault Check spool stuck of the solenoid valve.
Clean the valve spool and reassemble it.
Replace the solenoid assembly of the
valve.
Pressure is
applied to piping
but grab does not
work
The stop valves in pipe line
locked
Open the stop valves
Defective cylinder, check valve Contact EVERDIGM service
The operation of grab is
irregular or run slowly. The hydraulic oil in oil tank is
too small Check the oil level in oil tank and fill the
oil properly
The crushing power is weak
Relief pressure of grab is too
low Correct operating pressure or contact
EVERDIGM service
Defective relief valve Contact EVERDIGM service
Grab can not rotated or
abnormal noise during rotation Hydraulic motor, pinion or
slewing bearing are defective
Contact EVERDIGM service
Operating temperature is too
high
Pressure relief valve is
defective
Replace the pressure relief valve
Insufficient oil level Refill oil tank
Defective in oil cooler or cooler
piping
Contact manufacturer of carrier
The operation of grab is
irregular or run slowly. The hydraulic oil in oil tank is
too small Check the oil level in oil tank and fill the
oil properly
Oil leaks
Oil leaks from the
hydraulic
connections
O-ring damaged Replace the damaged O-rings.
Oil leaks from
main body Defective hydraulic parts or
connection area
Contact EVERDIGM service
Abnormal noise at joint pin Insufficient greasing Apply grease

Consult the other troubles and more details with EVERDIGM dealers or EVERDIGM service center.