Troubleshooting Tips - Danfoss FT1390 Operator's Manual

Troubleshooting tips

Remember: The electric motor only runs during the crimping process. The motor energizes
when the crimp/retract switch or footswitch is pressed and de-energizes when the cylinder
has retracted.
Symptom
Pump will not start
Motor stalls under load
Electric valve will not operate
Pump fails to build pressure
Pump builds less than
full pressure
Pump builds full pressure,
but cylinder does not move
Cylinder will not return
Crimp diameters change
DISPLAY blinks
If the symptom appears to be solely pump or cylinder related, refer to the ENERPAC Repair Parts Sheets.
Any electrical checks must be done by a qualified electrician.
Refill oil reservoir with ENERPAC premium hydraulic oil only (ENERPAC P/N H-F-101).
12 Danfoss FT1390 Crimp Machine Operator´s Manual October 2022
Possible
• No power or wrong voltage
• Low voltage
• No power or wrong voltage
• Low voltage
• External leak in system
• Internal leak in pump
• Internal leak in valve
• Internal leak in system component
• Relief valve set low
• External system leak
• Internal leak in pump
• Internal leak in valve
• Internal leak in system component
• Tie rods may be binding
• Flow to cylinder blocked
• Valve malfunction
• Restricted/blocked
• Tie rods may be binding
• Incorrect hose/fitting combination
• Incorrect die cage
• Die cage or crimp insert damage
• Transducer is loose
• Loose crimp machine components
• External damage to crimp machine
• Insufficient lubrication on dies
• Loose or broken wires
Cause Corrective Action
• Make sure that the unit is plugged in.
• Make sure that the power voltage
is correct.
• Check for loose wires on the circuit board.
• Check for loose wires on the CRIMP
switch.
• Verify that the branch circuit conforms
to the electrical specifications on Page 4
of this manual.
• Remove any extension cords.
• Check for loose wires on the circuit board.
• Check for loose wires on the CRIMP
switch.
• Make sure that the power voltage
is correct.
• Wipe away spilled oil, and locate the
source of leak. If the hose assembly is
leaking, tighten or replace it. If the
pump or cylinder is leaking, refer to the
ENERPAC Repair Parts Sheets. Slight
oil seepage of the cylinder is normal.
• Refer to the ENERPAC Repair Parts Sheets
possible adjustment or leak age repair.
• Replace the tie rods.
• Refer to the ENERPAC Repair Parts Sheets.
• Refer to the ENERPAC Repair Parts Sheet
for valve or cylinder repair.
• Replace the tie rods.
and repair or replace them if necessary.
• Lubricate the die cage per the maintenance
procedures on Page 9.
• Lubricate the tie rod bushings per the
maintenance procedures on Page 9..
• Verify the correct hose/fitting combination.
• Verify the correct die cage.
• Repair or replace the damaged
components.
• Tighten the transducer and brackets, and
then reclaimable them if necessary.
• Tighten any loose bolts or screws
• Lubricate the die cage per the maintenance
procedures on Page 9.
• Lubricate the tie rod bushings per the
maintenance procedures on Page 9.
• Tighten any wires that may have become
loose on the circuit board, pump electrical
enclosure, or CRIMP switch.