Enerpac WFL111, Инструкция

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8.0 TROUBLESHOOTING
5
Problem
Plunger will not advance completely when
system maximum pressure is activated.
Work support raises part off of rest
surfaces.
Work Support plunger is slipping.
Plunger will not retract. Plunger will not
release to extended height.
Work support leaks oil.
Possible Cause
1. Determine if hydraulic system is exceeding flow rate
(see specifications table)
2. Check for broken take up spring.
3. Check plunger and sleeve for damage.
1. Work support may be over–size for application.
1. Hydraulic pressure may be below minimum amount to
hold plunger.
2. Cutting forces may be exceeding the capacity of the
work support.
1. Hydraulic pressure has not been released from the the
system.
2. Excessive back pressurefrom small diameter tubing or
tight bends.
3. Check plunger and sleeve for damage ordebris
accumulation
4. Check for broken return spring.
1. Check seals for wear or damage.
2. Connection to work supports may be leaking.