Section 8: TROUBLESHOOTING
Page 5
6
OM-ZR-May15
Clamp Closes But CLOSED Light Does Not Come ON
Engine is running.
Hoses are connected.
Clamp switch to CLOSE
Check CLOSED lights on both pendant
and control panel.
Both CLOSED lights out
Hold clamp switch on OPEN for 20
seconds and observe open-clamp
pressure.
One CLOSED light out
Replace bulb or fix wiring.
Resume normal operation.
Pressure below 4500 psi
Set clamp relief valve (RV2) to 4800 psi
(see Section 6: MAINTENANCE).
Set pressure switch to 4500 psi
After setting, resume normal operation.
Pressure at 4500 psi
Change pressure switch (PS1) or check
wiring from pressure switch to lights.
After repairs, resume normal operation
Pressure Switch (PS1)
Relief Valve (RV2)
Clamp Control Stack
