Hilti DWP 10 Mode D'emploi page 11

Care and maintenance
Observe the instructions in the section entitled "Safety".
After using the device 50 times or at least once a year:
• Disassemble the pump [2]
• Grease the O-ring [15]. (Fig. 13)
Observe the legal requirements of your country for accident prevention and check
the water supply device at regular intervals.
If there are no special rules, we recommend you have the device examined exter-
nally by Hilti's Customer Service Department every 2 years and subject it to an
internal inspection every 5 years.
Faults
Use only Hilti spare and accessory parts.
Fault
No pressure builds up in
the water supply device
Liquid flows out of the
pump.
Safety valves blow off too
early.
Pressure gauge is not
indicating any tank pres-
sure.
Printed: 23.11.2017 | Doc-Nr: PUB / 5386587 / 000 / 00
All manuals and user guides at all-guides.com
and grease the diaphragm [16].
(Fig. 12)
Cause
The pump is not screwed on
tightly.
O-ring [15] on the pump is
faulty.
Diaphragm [16] is defective.
Valve disc dirty or defective.
Safety valve [5] is defective.
Pressure gauge [10] defective. Have the device repaired by
Remedy
Screw the pump on tightly
Have the device repaired by
Hilti's Customer Service De-
partment
Have the device repaired by
Hilti's Customer Service De-
partment
Clean the valve disc or have it
repaired by Hilti's Customer
Service Department.
Have the device repaired by
Hilti's Customer Service De-
partment
Hilti's Customer Service De-
partment
11
(Fig. 12)