Enerpac WSL-442 - Manual (Page 9)

3. Shift the handle of the air valve to activate air pressure and advance the work
support plunger into position. The plunger should be at the approximate
middle of its stroke when contacting the workpiece. If the weight of the
workpiece does not push the plunger down to the correct position, repeat step
1 and adjust the air pressure appropriately
4. Activate hydraulic pressure to lock the work support plunger into position.
The position of the plunger will be maintained until hydraulic pressure is
released.
5. Clamp the workpiece into position to facilitate machining operations.
6. When machining is complete, release hydraulic pressure from clamping
cylinders first, then release hydraulic pressure from work supports.
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
(9)
Check seals for wear or damage.
Connection to work supports may be leaking.
Work support leaks oil.
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.
Plunger will not retract.
Plunger will not release to extended height.
Hydraulic pressure may be below minimum amount to
hold plunger.
Cutting forces may be exceeding the capacity of the work
support.
The workpiece is experiencing excessive deflection.
Determine if hydraulic system is exceeding maximum flow
rate (see specifications table).
Check for broken take up spring.
Check plunger and sleeve for damage.
Plunger will not advance when system pressure is
activated.
POSSIBLE CAUSE PROBLEM