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Finish 370 / 250
GB
REPAIRS AT THE UNIT
10.10 REMEDY IN CASE OF FAULTS
TYPE OF MALFUNCTION WHAT ELSE? POSSIBLE CAUSE MEASURES FOR ELIMINATING THE MALFUNCTION
Unit does not start Motor switch can not
switched on
No voltage applied Check voltage supply
Unit fuse has triggered Let the motor cool down
Unit does not suck in Air bubbles exit from
the return hose
Unit is sucking in outside
air
Check: Suction system tightened properly?
Cleaning connection at rigid suction tube
screwed tight and not leaking? Inlet valve
button leaky? -> Replace wiper and O-ring (->
refer to Section 10.1)
Air bubbles do not exit
at the return hose
Inlet valve clogged Press the inlet valve button until the stop is
reached several times by hand
Inlet/outlet valve soiled
/ foreign bodies (e.g.
threads) drawn in / worn
Remove the valves and clean then (-> refer to
Section Pkt.10.2/10.3) / replace worn parts
Pressure control valve tur-
ned down completely
Turn the pressure control valve to the right un-
til the stop is reached
Unit does not gene-
rate pressure
Unit has sucked in Air in the oil circuit Bleed the oil circuit in the unit by turning the
pressure control valve completely to the left
(until overturning) and let it run approx. 2 – 3
min. Then turn the pressure control valve to
the right and set the spraying pressure (repeat
process several times, if necessary). Process is
assisted by positioning the unit vertically.
Unit reached pressu-
re, but the pressure
collapses, also at the
pressure gage, during
spraying.
Suction lter clogged Check the suction lter. If necessary, clean/
replace
Paint cannot be worked in
this state. Due to its pro-
perties the paint clogs the
valves (inlet valve) and the
delivery rate is too low.
Dilute the paint
Unit reached pressure,
but the pressure col-
lapses during spraying.
pressure gage still
shows high pressure
Clogged lter do not let
enough paint pass
Check/clean the (high-pressure lter) gun lter
Tip clogged Clean the tip (-> refer to Section 10.1)
Unit does not generate
the max. pressure pos-
sible. Paint neverthe-
less exits at the return
hose.
Relief valve defective Clean or replace the relief valve (-> refer to
Section 10.5)