Table Of Faults - PFT G 4 X FU Series Operating Manual

41.5 Table of faults

Fault Possible cause
Machine does Water pressure too low
not start
water
Pressure gauge shows less than
2.2 bar
Power supply not in order
Machine does
not start
Main switch not activated
power
RCCB was triggered
Yellow pilot light, fault direction of
rotation lights up
Motor protection switch triggered
Operating button "ON" not pressed Press operating button "ON"
Contactor defective
Machine does Insufficient drop in pressure in the
remote control due to blocked air
not start air
duct or air nozzle pipe
Air safety switch set wrongly
Air compressor not switched on
Machine does Too much thickened material in
hopper or mixing section
not start
material
Excessively dry material in pump
part
Solenoid valve (hole in membrane
Water does
blocked)
not run (flow
meter does
Solenoid coil defective
not show
Pressure reducing valve closed
anything)
Water inlet at pump tube blocked
Needle valve closed
Cable to solenoid valve defective
2020-01-07
Mixing pump G 4 X FU 230/400V Overview - Operation
Work on troubleshooting
Solution
Check water supply, clean strainer
screen
Check booster pump
Repair power supply
Activate main switch
Reset RCCB
Push the metal bracket at the main
switch in the opposite direction
Turn motor protection switch in
control cabinet to position 1
Change contactor
Clean blocked air duct or air nozzle
pipe
Set air safety switch
Switch on air compressor
Empty half of the hopper and start
again
Run the machine in backward mode,
otherwise remove pump and clean it
Clean solenoid valve
Change solenoid coil
Open pressure reducing valve
Clean water inlet at pump tube
Open needle valve
Replace cable to solenoid valve
Rectification by
Operator/Service
engineer
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Operator
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Operator
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Operator
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Operator
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Operator
Operator
Operator
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Service engineer
Operator
Operator
Operator
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