PFT G4 - Page 58

Mixing Pump PFT G4
Troubleshooting
58 2007-09-05
Problem Possible cause Corrective action to be
corrected by
Air pressure safety switch is
incorrectly adjusted or defective
Adjust or replace the air pressure
safety switch
Service
technician
Air pressure hose defective or
seals are defective
Replace compressed air hose,
replace seals or check compressor
Service
technician
Air cock on the sprayer is
defective
Replace air cock Service
technician
Compressor does not supply
enough air
Check the compressor Service
technician
Machine does
not switch off
Air line is not connected on the
compressor
Connect the air line on the
compressor
Operator
Poor mixing in the mixing tube Add more water Operator
Material clumps and cuts off the
mixing pipe inflow
Add more water or clean or replace
the mixing helix
Operator
Feed hopper on the mixing pipe
has become wet
Dry the mixing pipe inlet and start
again
Operator
Mixing helix defective Replace mixing helix Operator
Mortar flow
interrupted
(bubbles)
Motor claw defective Replace the motor claw Service
technician
Insufficient water Increase the water quantity 10% for
about 1/2 minute and then slowly
adjust downward
Operator
Water safety switch is incorrectly
adjusted or defective
Adjust or replace the water safety
switch
Service
technician
Mixing helix defective; not an
original PFT mixing helix
Replace mixing helix with an original
PFT mixing helix
Operator
Pressure reducer is incorrectly
adjusted or defective
Adjust or replace the pressure
reducer
Service
technician
Rotor worn out or defective Replace rotor Service
technician
Mortar flow
"thick-thin"
Stator worn out or spring clamp
clip is too loosely tensioned
Replace the stator or retighten the
clamp clip
Service
technician