Enerpac MP-Series - Handbuch (Seite 8)

8
7 Trouble Shooting
Problem Possible cause
1. Cylinder will not advance A. Pump release valve open
B. No oil in pump
C. Air bound
D.Couplers/connections not fully tightened
E. Blocked hydraulic line
F. Collet may be stuck
2. Cylinder advances partly A. Oil level in pump is low
B. Cylinder plunger is binding
C. Index rod damaged
D. Collet may be stuck
3. Cylinder advances in spurts A. Air in hydraulic system
B. Cylinder plunger is binding
4. Cylinder advances slower than normal A. Leaking connection
B. Restricted hydraulic line or fitting
C. Loose coupler
D. Pump malfunctioning
5. Cylinder advances but will not hold pressure A. Cylinder seals leaking
B. Leaking connection
C. Pump malfunctioning
6. Cylinder leaks oil A. Worn or damaged plunger
B. Leaking or loose connection
C. Internal leakage
7. Cylinder will not retract A. Pump release closed or retract slower
B. Coupler not fully closed than normal
C. Blocked hydraulic line
D. Pump reservoir over-filled
8. Cylinder will not fully retract A. Pump reservoir over-filled
B. Partially blocked hydraulic line
C.Cylinder damaged internally or externally
D. Collet may be stuck