Mesto PROFI 3275 Mode D'emploi page 18

GB IRL
Observe the legal requirements of your country for accident prevention and check
the device in regular intervals.
If there are no special rules, we recommend 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.
Faults
Use only MESTO spare parts and accessories (→ fig. on page 2).
Fault
No pressure builds up in
the device
Liquid flows out of the
pump
Piston pressure gauge
does not indicate any
pressure.
Safety valve blows 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 → Title page.
AUS USA
Cause
The pump is not screwed on
tightly.
O-ring [14] on the pump is
faulty. (Fig. 16)
Diaphragm [15] is defective.
(Fig. 16)
Valve disc [17] dirty or
defective. (Fig. 18)
Piston pressure gauge [8] is
defective. (Fig. 19)
Nozzle [18] (Fig. 20) or / and
filter [20] (Fig. 21) is clogged.
O-ring [26] of the pressure bolt
[27] not greased / lubricated.
(Fig. 23)
Pressure bolt [27] or
O-ring [26] defective. (Fig. 23)
18
NZ CDN
Remedy
Screw the pump on tightly.
Replace the O-ring.
Replace the diaphragm.
Clean or replace the valve disc.
Replace the piston pressure
gauge.
Clean the filter or / and nozzle.
Grease the O-ring [26]
(dismantle shut-off valve
→ section "Care and
maintenance")
Replace the pressure bolt or
O-ring.
IND