16
Care and maintenance
Faults
After using the device 50 times or at least once a year:
• Disassemble the pump [2] and grease the diaphragm [20].
(Fig. 12 - 13)
• Clean the nozzle [21] under running water.
(Fig. 14)
• Remove the filter [22] from the shut-off valve [3] and clean it under flowing water
(Fig. 15)
• Grease the O-rings [19] and [24]
(Fig. 13 and/or 19)
Observe the instructions in the section entitled „Safety“.
Use only spare parts and accessories from MESTO (Fig. on page 2)
Observe the legal requirements of your country for accident prevention and
check the device in regular intervals. If there are no special rules, we recom-
mend you have the device examined externally by a competent professional
every 2 years and subject it to an internal inspection every 5 years. We would be
happy to provide you with an inspection schedule in German or English.
Fault
Cause
Remedy
No pressure builds up in
the device
The pump is not screwed
on tightly.
Screw the pump on tightly
O-ring [19] on the pump is
faulty.
Replace the O-ring.
(Fig. 17)
Diaphragm [20] is defective. Replace the diaphragm.
(Fig. 17)
Liquid flows out of the
pump.
Valve disc [23] dirty of
defective.
Clean or replace the valve disc.
(Fig. 16)
The nozzle does not
spray even though pres-
sure is present.
Filter [22] and / or nozzle
[21] blocked.
Clean the filter or / and nozzle.
(Fig. 14 + 15)
.
Safety valves blow off
too early.
Safety valve [13] is defec-
tive.
Replace safety valve.
(Fig. 18)
The shut-off valve does
not close.
Liquid emerges without
the lever being activa-
ted.
O-rings [24] on the pressure
bolt not greased.
Defective pressure bolt [25]
or O-rings [24]
Grease the O-ring of the pres-
sure bolt.
(Fig. 19)
Replace the pressure bolt or
O-ring.
(Fig. 19)
Pressure gauge is not
indicating any tank
pressure
Manometer [16] defekt.
Pressure gauge [16] defective.
Unscrew pressure gauge [16]
and replace. (Fig. 20)
Contact address for additional information
→ Title page.
GB
IRL
AUS
USA
NZ
CDN
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