Maintenance And Service; Troubleshooting - Enerpac WFL 221 Manuel D'instructions

4. Activate hydraulic pressure to lock the work support plunger into position. The
5. Clamp the workpiece into position to facilitate machining operations.
6. When machining is complete, release hydraulic pressure from clamping cylinders
7. Remove workpiece from the fixture.

MAINTENANCE AND SERVICE

Maintenance is required only when wear and/or leakage is noticed. Occasionally,
inspect all components to detect any problems requiring service and maintenance.
Enerpac offers repair kits for equipment maintenance. Repair parts sheets are also
available. Contact your Enerpac representative.

TROUBLESHOOTING

PROBLEM
Plunger will not advance when system pressure is
activated.
The workpiece is experiencing excessive deflection.
Plunger will not retract.
Plunger will not release to extended height.
Work support leaks oil.
position of the plunger will be maintained until hydraulic pressure is released.
first, then release hydraulic pressure from work supports.
POSSIBLE CAUSE
Determine if hydraulic system is exceeding maximum
flow rate (see specifications table).
Check for broken take up spring.
Check plunger and sleeve for damage.
Hydraulic pressure may be below minimum amount to
hold plunger.
Cutting forces may be exceeding the capacity of the
work support.
Hydraulic pressure has not been released from
the system.
Excessive back pressure from small diameter tubing
or tight bends.
Check plunger and sleeve for damage or for debris
accumulation.
Check for broken return spring.
Check seals for wear or damage.
Connection to work supports may be leaking.
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