PFT G4 - Page 57

Mixing Pump PFT G4
Troubleshooting
2007-09-05 57
Problem Possible cause Corrective action to be
corrected by
Too much thickened material in
the hopper or mixing zone
Empty half of the hopper and start
up the machine again
Operator Machine does
supply
mortar
Material in the pump component is
too dry
Run the machine in reverse, or
remove and clean the pump
Service
technician
Solenoid valve (bore in the
diaphragm is blocked)
Clean the solenoid valve Service
technician
Magnetic coil defective Replace the magnetic coil Service
technician
Pressure reducer valve is closed Open the pressure reducer valve Operator
Water inlet on the pump pipe is
blocked
Clean the water inlet on the pump
pipe (see chapter "Maintenance" in
this Operating Manual)
Operator
Needle valve closed Open needle valve Operator
Mo water
running
(flow meter
shows
nothing)
Cable to the solenoid valve is
defective
Replace cable to the solenoid valve Service
technician
Pump motor defective Replace pump motor Service
technician
Connecting cable defective Replace the connecting cable Certified
electrician
Plug or attached outlet is defective Replace plug or attached outlet Service
technician
Pump motor
does not start
up
Motor protection switch is
defective or has tripped
Replace or reset the motor
protection switch
Certified
electrician
Debris collector sieve is fouled Clean or replace sieve (see chapter
"Maintenance" in this Operating
Manual)
Operator
Pressure reducer sieve is fouled Clean or replace sieve Service
technician
Hose connection or water line is
too small
Enlarge hose connection or water
line
Operator
Machine
stops after a
short time
Water suction line is too long or
suction pressure is too weak
If necessary connect a booster
pump in series
Service
technician