Hi-Force HP227 Instrukcja obsługi - Strona 12
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Hi-Force HP manually operated hydraulic pumps 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. No delivery of
operating fluid.
2. Handle drops rapidly
on its own.
3. Handle rises as
pressure drops.
4. Handle is hard to
pump in low pressure.
HP227/HP257 only
5. Loss of effective
pumping stroke, and/or
high-pressure building.
6. erratic pressure
reading on gauge
and/or slight over-
pressurisation
9.0 Troubleshooting
TROUBLESHOOTING GUIDE
Possible Cause
a. No oil in the reservoir.
b. Suction valve not seating.
c. Relief valve sticking or not sealing.
d. Delivery valve failure.
a. Suction ball not sealing correctly.
a. Delivery valve not sealing correctly. With the release valve open, pump fluid
a. The low pressure relief valve is set
been adjusted to high.
a. Air trapped in the pump.
a. Uncontrolled use of the pump
handle.
Operating Instruction Manual:
OM-HP-STEEL-01
Solution
Fill reservoir as per section 5.2
Remove contaminants or have steel balls
replaced.
Contact your local Hi-force distributor.
Have steel balls replaced.
With the release valve open, pump fluid
around the pump. This may dislodge the dirt.
If this does not work, contact your local
Hi-Force office / distributor.
around the pump. This may dislodge the dirt.
If this does not work, contact your local
Hi-Force office / distributor.
Contact your local
Hi-Force office / distributor.
Follow bleeding procedure as per section 5.4
Follow operation guidance notes in section 6.
If this does not work, contact your local
Hi-Force office / distributor.
12
Serial Numbers:
From: DF6685