42
Translation of the original operation manual
DUOMIX 230
DM230_BAoDB_en_1307 · rs
Rectification of faults
7 Rectification of faults
Fault
Possible cause/s
Remedy
The feed pumps work without inter-
ruption. With the relieve tap opened
no material comes out of the output
distributor.
1. The material drum is empty.
2. The suction system is defective
and the pump sucks in air.
3. Material feed pump(s) is (are)
defective.
4. The viscosity is too high.
Ö
Replace the material drum or fill
it up.
Ö
Replace the suction system.
Ö
Repair the feed pump(s).
Ö
Replace the material heater.
The feed pumps do not pump any
material into the unit (with the drain
valve open material runs out of the
outlet manifold).
1. The ball valve on the material
inlet is closed.
2. The dirt trap before the material
inlet is soiled.
Ö
Open the ball valve.
Ö
Clean the dirt trap.
No pressure built up by hardener
pump during downwards stroke of
metering pump. The pressure of
standard components rises.
The bottom valve of the hardener
pump is defective.
Ö
Disassemble and clean the bot-
tom valve.
Ö
Replace defective ball or valve
plate.
No pressure built up by hardener
pump during upwards stroke of
metering pump. The pressure of
standard components rises.
1. The piston valve of the hardener
pump is leaking.
2. The bottom packing of the hard-
ener pump is worn.
Ö
Disassemble and clean the
piston valve.
Ö
Replace defective ball or valve
plate.
Ö
Replace the packing.
The hardener pump does not gener-
ate pressure in up and down stroke.
1. The hardener pump does not
receive any material.
2. The burst disc on the high pres-
sure filter is defective.
3. The ventilation valve of the hard-
ening component is leaking.
4. The ball valve on the material
inlet is closed.
Ö
Check the material supply.
Ö
Check the burst disk for the hard-
ening component on the high
pressure filter.
Ö
Check the ventilation valve for
the hardening component for
function and leak tightness.
Ö
Open the ball valve.
During the up stroke the pressure of
hardener and standard components
is considerably higher than during
the down stroke, or the pressure of
both components slowly increases
synchronously.
A piston valve of the two standard
component pumps does not work.
Ö
Check and clean both piston
valves.
Ö
Replace defective balls or valve
plates.
Both standard component pumps
do not generate any pressure in up
stroke. The pressure in the hardener
side is very high.
The piston valves of the two stand-
ard component pumps do not work.
Ö
Check and clean both piston
valves.
Ö
Replace defective balls or valve
plates.
In the up stroke the pressure of both
components is considerably higher
than during the down stroke. The
feed hose inflates or the pressure
relief valve on the outlet manifold
opens.
A bottom valve of the two standard
component pumps does not work.
Ö
Check and clean both bottom
valves.
Ö
Replace defective balls or valve
plates.
Summary of Contents for Duomix 230
Page 2: ......
