MESTO 3237FP Manual De Instrucciones página 18

EN
Observe the legal requirements of your country for accident prevention and check
the device in regular intervals.
Unless otherwise specified, we recommend that an expert carries out an external
test every 2 years and an internal test every 5 years as well as a strength test every
10 years.
Faults
Use only original spare and accessory parts.
Fault
No pressure builds up in
the device
Liquid flows out of the
pump
No tank pressure indica-
tion on the piston pressure
gauge,
Safety valves blow off too
early.
The nozzle does not spray
even though pressure is
present
The shut-off valve does not
close.
Liquid emerges without the
lever being activated
Contact address for additional information → see title page.
Cause
The pump is not screwed
on tightly.
O-ring [13] on the pump is
faulty. (Fig. 16)
Diaphragm [14] is defecti-
ve. (Fig. 16)
Valve disc [18] dirty of
defective. (Fig. 21)
Piston pressure gauge [10]
is defective
Nozzle [16] (Fig. 18) or
/ and filter [17] (Fig. 19)
clogged.
Discharge filter [6] (Fig.
20) blocked.
O-rings [19] of the pressu-
re bolt [20] is not greased /
lubricated. (Fig. 22)
Defective pressure bolt
[20] or
O-ring [19]. (Fig. 22)
18
Remedy
Screw the pump on tightly.
Replace the O-ring.
Replace the diaphragm.
Clean or replace the valve disc.
For safety reasons, it is not pos-
sible to replace the safety valve/
piston pressure gauge.
Please contact your local MES-
TO specialist or MESTO directly.
(3237P).
Replace the piston pressure
gauge (3278P).
Clean the nozzle or / and filter.
Clean discharge filter.
Grease the O-rings of the pres-
sure bolt
Replace the pressure bolt or
O-rings.
ENGLISH