Hilti DX462CM, Operating Instructions Manual

Page: 30 / 108

24
en
Fault
Cause Possible remedies
Piston return unit is stuck
■
Carbon build-up
■
Manually pull the front part of
the piston return unit out of the
tool
■
Check that the correct cartridges
are used (see 1.2) and that they
are in faultless condition.
■
Clean the tool (see 8.3–8.13)
If the problem persists:
■
Contact Hilti Repair Centre
Variation in marking quality
■
Piston damaged
■
Damaged parts
(impact extractor, O-ring)
into the marking head
■
Worn characters
■
Check the piston.
Replace if necessary
■
Cleaning and servicing the
marking head (see 8.14–8.15)
■
Check quality of marking
characters
Piston is stuck in the piston return
unit and cannot be removed
■
Damaged piston
■
Carbon build-up
■
Remove the cartridge strip and
clean the tool (see 8.3-8.14).
Check the piston and buffer and
replace these parts if necessary
(see 8.4).
If the problem persists:
■
Contact Hilti Repair Centre
The operator notices:
– increased contact pressure
– increased trigger force
– power regulation stiff to adjust
– cartridge strip is difficult to
remove
■
Carbon build-up
■
Clean the tool
(see 8.3–8.13)
■
Check that the correct cartridges
are used (see 1.2) and that they
are in faultless condition.