Problems - Keller HTP1 Notice D'utilisation

6 Problems

CAUTION! Material damage!
The hand pump cannot be repaired by the operator! In the case of a defect, the appli-
ance must be sent back to the manufacturer for repair.
â
Never open up the hand pump and / or carry out any repairs yourself.
The table below describes steps that can be taken in the event of a malfunction.
Problem
Pressure cannot be
built up.
No further increase of
pres-sure is possible
Pressure fades (unstable)
Pumping stroke stiff
Possible cause
Defective / incorrect seal.
Seal incorrectly
positioned
Pressure relief
valve open
Air was sucked in during
pressure generation.
Leakage in the test item
High counter pressure in
the test item
35
Remedy
Check seal
(size / material / wear)
Check positioning
of seal.
Close pressure relief
valve.
Open pressure relief
valve so that the air can
be rinsed out of the piston
system.
Ensure the correct position
of the hand pump during
pressure generation.
Check connections
Check positioning of seals
Increase the pressure with
the hand wheel of the fine
adjustment valve