Mixing pump G 4 X Super / G 4 X XL / Part 2 Overview, operation and service
Operation
Fault
Possible cause
Troubleshooting
Rectification by
Pump motor defective
Replace pump motor
Service technician
Connection cable defective
Change connection cable
Service technician
Plug or mounted socket defec-
tive
Replace plug or mounted socket Service technician
Pump motor
will not start
Motor protection switch defective
or triggered
Replace or reset motor protec-
tion switch
Service technician
Strainer screen is dirty
Clean or replace filter
Operator
Filter of pressure relieve device
contaminated
Clean or replace filter
Operator
Hose connection or water supply
line too small
Enlarge hose connection or
water supply line
Operator
Water inlet pipe too long or inlet
pressure too low
If necessary, connect additional
water pressure booster pump.
Service technician
Machine stops
after a short
while
Booster pump not switched on
Switch on booster pump
Operator
Air pressure safety switch set
incorrectly or defective
Set or replace air pressure
safety switch
Service technician
Compressed air hose or gaskets
defective
Replace compressed air hose,
replace gaskets or check
compressor
Service technician
Air tap on spray gun defective
Replacing the air tap
Service technician
Power provided by compressor
is too low.
Check compressor
Service technician
Machine does
not switch off
Air duct is not connected to the
compressor
Connect air supply to
compressor
Operator
Too little water
Increase the water quantity by
10% for approx. ½ minute and
then turn down slowly
Operator
Water safety switch set incor-
rectly or defective
Set or replace water pressure
safety switch
Service technician
Mixing shaft defective; no orig-
inal PFT mixing shaft
Replace mixing shaft with an
original PFT mixing shaft
Operator
Pressure reducer set incorrectly
or defective
Adjust or replace pressure
reducer
Service technician
Rotor worn or defective
Replace rotor
Service technician
Stator worn or clamped too
loosely
Replace stator or re-tighten
clamp
Service technician
Clamping bracket defective
(oval)
Replace clamping bracket
Service technician
Mortar flow
"thick-thin"
Inner wall of mortar hose defec-
tive
Replace mortar hose
Operator
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