Hi-Force HPS300 Betriebsanleitung - Seite 13

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Hi-Force HPS300 Betriebsanleitung
The Hi-Force HPS electric-driven hydraulic pump should be serviced and repaired only by authorised Hi-
Force repair centres. The following table gives possible causes and solutions for common problems.
Problem
1. Piston will not
advance.
2. Cylinder advances part
way.
3. Cylinder advances in
spurts.
4. Cylinder advances
slower than normal.
5. Cylinder advances, but
will not hold.
6. Cylinder leaks oil.
7. Cylinder will not retract
or retracts slower than
normal.

10.0 Troubleshooting

TROUBLESHOOTING GUIDE
Possible Cause
a. Pump release valve open.
b. Coupler not fully tightened.
c. Oil level in pump is low.
d. Pump malfunctioning.
e. Load is too heavy for cylinder.
f. Cylinder seals leaking.
a. Oil level in pump is low.
b. Coupler not fully tightened.
c. Cylinder piston binding.
a. Air in hydraulic system.
b. Cylinder piston binding.
a. Leaking connection.
b. Coupler not fully tightened.
c. Pump malfunctioning.
a. Pump malfunctioning.
b. Leaking connection.
c. Incorrect system setup.
d. Cylinder seals leaking.
a. Worn or damaged seals.
b. Internal cylinder damage.
c. Loose connection.
a. Pump release valve is closed.
b. Coupler not fully tightened.
c. Pump reservoir over-filled.
d. Narrow hose restricting flow.
e. Cylinder damaged internally.
Operating Instruction Manual:
OM-HPS-01
Solution
Close pump release valve.
Tighten coupler.
Add oil to pump reservoir.
Repair or replace pump.
Use correctly rated cylinder for load.
Repair or replace cylinder.
Add oil to pump reservoir.
Tighten coupler.
Repair or replace cylinder.
Bleed air from system.
Repair or replace cylinder.
Replace faulty component.
Tighten coupler.
Repair or replace pump.
Repair or replace pump.
Replace faulty component.
Check system setup.
Repair or replace cylinder.
Repair or replace cylinder.
Repair or replace cylinder.
Tighten or repair connection.
Open pump release valve.
Tighten coupler.
Drain excess oil from pump reservoir.
Replace with larger diameter hose.
Repair or replace cylinder.
13
Serial Numbers:
From: AF0316
(See section
5.3)