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9 Disturbances during operation and trouble-shooting
44 Translation of the original operation manual
•303_208176_1004_en•ski
9 Disturbances during operation and trouble-shoo-
ting
If you are looking for a remedy of a problem please observe the chapter “Disturbances
during operation and trouble-shooting” in the user’s manuals of the optional accessory
equipment.
Faults Probable Causes Remedies
1. Feed pumps operate continuously.
Drain valve is opened but no
material comes out of the outlet
manifold.
➤
Fluid container is empty.
➤
The ball valve is closed.
➤
The suction hose is defect and the
pumps draw air.
➤
One or both of the feed pumps are
defective.
➤
Exchange or refill fluid container.
➤
Open ball valve.
➤
Repair suction hose.
➤
Repair feed pump(s).
2. Feed pumps do not deliver mate-
rial to the 2-K unit
(Drain valve is opened but no
material comes out of the outlet
manifold).
➤
Ball valve at the material inlet is
closed.
➤
Dirt collector at the material inlet
of the 2K-unit is clogged.
➤
Open ball valve.
➤
Clean dirt collector.
3. When the dosing pump is on the
downstroke, the hardener pump
does not build up pressure.
Pressure of base increases.
➤
Bottom valve of the hardener
pump is defective.
➤
Remove and clean the bottom
valve.
➤
Replace defective ball or valve
plate.
4. When the dosing pump is on the
upstroke, the hardener pump does
not build up pressure.
➤
Piston valve of the hardener pump
is defective.
➤
Remove and clean the piston
valve.
➤
Replace defective ball or valve
plate
5. The hardener pump does not build
up pressure when cycling up and
down.
➤
No material is delivered to the
hardener pump.
➤
Rupture disc at the high pressure
filter is defect.
➤
Drain valve of the hardener is
leaking.
➤
Ball valve at the material inlet is
closed.
➤
Check material supply.
➤
Check rupture disc of the hard-
ener at the high pressure filter.
➤
Check function and tightness of
the drain valve of the hardener
pump.
➤
Open ball valve.
6. Pressure of hardener and base
is considerably higher on the
upstroke than it is on the down-
stroke, or there is a slow increase
in pressure of both components.
➤
One of the piston valves of the
base material pumps does not
work.
➤
Check and clean both piston
valves.
➤
Replace defective balls and valve
plates.
7. Base pumps do not build up pres-
sure on the upstroke.
Pressure at the hardener side is
very high.
➤
Piston valves of both base mate-
rial pumps do not work.
➤
Check and clean both piston
valves.
➤
Replace defective balls and valve
plates.