Enerpac SQD-Series - Manual (Page 9)

9
PROBLEM POSSIBLE CAUSE
1. No pressure
build-up at
wrench, and/or
wrench will not
advance.
A. No power supply or air supply.
B. Pump motor does not rotate
due to wrong voltage supply.
C. Blown out fuses (E-motor)
D. Direction of electric motor
rotation not correct.
E. Couplers at pump and wrench
side not completely
connected.
F. Oil level in pump too low
G. Pressure setting of relief valve
on pump too low.
H. Leakage in pump or wrench.
I. Defective pressure gauge.
J. Incorrectly mounted hoses.
A. Plug in all connections.
B. Check voltage setting
C. Replace fuses.
D. Change wiring of power cable.
E. Depressurize the hoses and
switched off pump, retighten
couplers by hand.
F. Add oil. See pump instructions.
G. Increase pressure by adjusting
pump relief valve. Do not exceed
max. pressure or torque.
H. Determine if leakage is in the
pump or the wrench. Contact your
Enerpac Service Center for
assistance.
I. Connect a second glycerine filled
pressure gauge, adjust pressure
on pump and check both gauge
values.
J. Change hose positions according
to illustration on page 6: (P to
P) and (T to T).
10
2. Safety valve at
retract side (T) of
wrench opens.
A. Couplers at retract side of
wrench and pump not
completely connected.
B. Incorrectly mounted hoses.
A. When pump is running, use the
remote control to switch the valve
position from (P or A) to (T or B)
and reverse to depressurize the
system. Turn off pump while
switching valve and tighten
couplers by hand.
B. Change hose positions according
to illustration on page 6: (P to
P) and (T to T).
10
3. Hoses can not
be disconnected
from wrench or
pump.
A. Pressure remaining in double-
acting hydraulic system.
B. Hydraulic system too warm.
A. When pump is running, use the
remote control to switch the valve
position from (P or A) to (T or B)
and reverse to depressurize the
system. Turn off pump while
switching valve and disconnect
hose.
B. Cool the hydraulic system, protect
it against heat and repeat solution
3A above to disconnect hoses.
SOLUTION
7.0 TROUBLESHOOTING
The table below is intended to be used as an
aid in determining if a problem exists.