bags and disposed of in compliance with the
applicable disposal regulations.
The appliance must be subjected to a technical
inspection by Hilti Service or a trained person
at least once a year to check, for example, for
damage to the filter, air leakage, and to ensure
correct operation of controlling devices.
8.8 Maintenance
WARNING
Repairs to the electrical section of the ap-
pliance may be carried out only by trained
electrical specialists.
9 Troubleshooting
Fault
No suction / reduced suc-
tion performance.
Dust is blown out of the
appliance.
Check all external parts of the appliance for
damage at regular intervals and check that all
controls operate faultlessly. Do not operate the
appliance if parts are damaged or when the
controls do not function faultlessly. If neces-
sary, the appliance should be repaired by Hilti
Service.
8.9 Checking the appliance after care and
After carrying out cleaning and maintenance,
check that the vacuum cleaner has been cor-
rectly reassembled and that it operates fault-
lessly.
Test each of the functions.
Possible cause
The dust / disposal bag is full.
No fluted filter fitted.
The fluted filter is clogged with
dirt or dust.
Blockage in the hose, vacuum
cleaner or power tool dust
hood.
The seal between the edge of
the container and the vacuum
cleaner top section is dirty or
defective.
Hole in the suction hose.
The filter cover seal is defect-
ive.
The draining hose is not closed
properly.
The fluted filter is not fitted cor-
rectly.
The fluted filter is damaged.
The filter seal is damaged.
maintenance
Remedy
Change the dust / disposal
bag.
See section: 7.4.1 Changing
the dust bag when picking up
dry dust 4
Fit a fluted filter.
Clean the fluted filter thor-
oughly or replace it if neces-
sary.
See section: 8.1 Cleaning the
fluted filter (thorough cleaning)
See section: 8.2 Changing the
fluted filter / exhaust air filter
Clean the hose and dust hood.
Clean the seal with a cloth or
replace it.
Fit a new hose.
Have the appliance repaired by
Hilti Service.
Close the draining hose prop-
erly.
Fit the fluted filter correctly.
Fit a new fluted filter.
Fit a new fluted filter.
en
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