18
Faults
Fault
Cause
Remedy
No pressure builds up in
the device
The pump is not screwed
on tightly.
Screw the pump on tightly.
O-ring [13] on the pump is
faulty.
)LJ
Replace the O-ring. (dismantle
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-
tion „Care and maintenance“)
Diaphragm [14] is defecti-
ve.
)LJ
Replace the diaphragm.
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pump
Valve disc [18] dirty of
defective.
)LJ
Clean or replace the valve disc.
No tank pressure indica-
tion on the piston pressure
gauge,
Safety valves blow off too
early.
Piston pressure gauge [10]
is defective
Have the piston pressure gauge
repaired (3237P).
Replace the piston pressure
gauge (3278P).
The nozzle does not spray
even though pressure is
present
Nozzle [16]
)LJ
or
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)LJ
clogged.
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)LJ
blocked.
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The shut-off valve does not
close.
Liquid emerges without the
lever being activated
O-rings [19] of the pressu-
re bolt [20] is not greased /
lubricated.
)LJ
Defective pressure bolt
[20] or
O-ring [19].
)LJ
Grease the O-rings of the pres-
sure bolt
Replace the pressure bolt or
O-rings.
Contact address for additional information
ĺVHHWLWOHSDJH
Use only MESTO spare parts and accessories
ĺ)LJRQSDJH
GB
IRL
AUS
USA
NZ
CDN
IND
