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Section 8: TROUBLESHOOTING
Page
59
OM-ZR-May15
Clamp Will Not Open
Engine is running
Hoses are connected
Clamp is closed
Turn clamp switch to OPEN,
hold for 20 seconds and read
Pressure on clamp gauge is
zero
Manually shift clamp solenoid
valve
Clamp pressure is 4800 psi
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Clamp pressure is zero
Shut down diesel engine
Cycle clamp relief valve (RV2) by moving
adjusting screw in and out
Reset relief valve to 4800 psi (see
Section 6: MAINTENANCE )
Restart engine
Turn & hold clamp switch on OPEN
Clamp pressure is zero
Repair or replace clamp pump (P2)
After repairs, resume operation
Clamp opens
Resume normal operation
Works in Local
Replace or repair pendant
After repairs, resume operation
Clamp pressure builds
but clamp does
not open
Check voltage to clamp close solenoid
No voltage to solenoid
Switch from Remote to
Local or vice versa (see
Section 5: OPERATION)
Voltage to solenoid
Replace solenoid
After repairs, resume
operation
Engine end
Open solenoid
Works in Remote
Replace clamp switch
After repairs, resume
operation
Reservoir end