G4 Light
Here is a list of our most frequently asked questions to assist with any questions you may have about the PFT machines. If your question isn’t here please do get in touch and we will answer this for you – simply click on ‘Talk to the Experts’ below
FAQ's
Machine does not start
Water
Possible causes:
• Water. Check the water supply
• Water pressure too low. Clean the dirt filters
• Gauge indicates pressure below 2.2 bar. Switch on the high pressure pump
Electricity
Possible causes:
• Power supply okay?
• FI safety switch activated?
• Main switch turned on?
• Fault indicator lamp lights up?
• Motor protection switch activated?
• Self-locking device not activated?
• Contactor faulty?
• Fuses faulty?
• Water safety switch misadjusted?
Air
Possible causes:
• Insufficient pressure gradient in the remote control due to blocked air pipe or air nozzle tube. Clean blocked air pipe or air nozzle tube!
• Air safety switch misadjusted
Material
Possible causes:
• Too much dry material in the hopper or mixing area. Half-empty the hopper and restart
• Material in pump component too dry. WARNING! Turn off the main switch and pull the plug out first
Water isn’t running (No display at flow meter)
Possible causes:
• Solenoid valve (hole in membrane blocked)
• Magnetic coil faulty
• Pressure-Reducing valve shut
• Water inlet on pump tube blocked
• Needle valve shut
• Cable to solenoid valve faulty
The pump motor does not start
Possible causes:
• Pump motor faulty
• Connection cable faulty
• Plug or built-in socket faulty
• Motor protection switch faulty or activated
The machine stops after a short while
Possible causes:
• Water inlet filter contaminated. Clean or replace filter
• Pressure reducer filter dirty
• Hose connection or water pipe too small. Enlarge water inlet
• Water suction pipe too weak or too long. If necessary, connect additional high pressure pump
The machine does not stop
Possible causes:
• Air pressure safety switch misadjusted or faulty
• Adjust air pressure safety switch
• Air hose or gaskets faulty – Replace air hose or check compressor
• Air tap on spraying gun faulty
• Compressor output insufficient
• Air supply not connected to compressor
No mortar flow (Air bubbles)
Possible causes:
• Bad mixture in mixing tube. Add more water.
• Mortar clogs, narrowing the mixing tube inlet. If this doesn’t help, clean or replace mixing shaft.
• Inlet filter on mixing tube is wet. Dry mixing tube inlet and restart.
• Mixing shaft faulty
• Motor catch faulty. Replace motor catch.
Mortar flow “thick”
Possible causes:
• Not enough water. If there is not enough water, add more
• Water safety switch misadjusted or faulty. Increase water quantity by 10 % for approx. half a minute, then return slowly to normal setting.
• Mixing shaft faulty; no original PFT mixing shaft. Adjust to normal setting, readjust or replace pump components.
• Pressure reducer misadjusted or faulty Eliminate any other faults.
• Rotor worn, faulty
• Stator worn or too loose at clamp
• Clamp faulty (oval)
• Inner wall of mortar hose faulty. Replace mortar hose.
• Rotor too deep in pressure flange. Check mixing shaft and motor catch.
• No original PFT spare parts
Water level rises in mixing tube during operation
Possible causes:
• Backpressure in mortar hose higher than pump pressure. Readjust stator or replace it.
• Rotor or stator worn If necessary, also replace rotor.
• Hose block due to mortar being too thick (high pressure due to low water factor). Remove hose blocks.
Fault indicator lamp lights up
Overload
Possible causes:
• Motor protection switch (16 A) activated (pump motor). Turn protection switch back on, clean mixing tube and increase water supply on starting the machine.
• Pump blocked with dry material
• Insufficient water quantity
• Star wheel motor safety switch activated. Clean the hopper and star wheel
• Clogged material in hopper
Machine does not start
Material
Possible causes:
• Too much dry material in the hopper or mixing area. Half-empty the hopper and restart
• Material in pump component too dry. WARNING! Turn off the main switch and pull the plug out first
Fault indicator lamp lights up
Overload
Possible causes:
• Star wheel motor safety switch activated. Clean the hopper and star wheel
• Clogged material in hopper
The pump motor does not start
Possible causes:
• Pump motor faulty
• Connection cable faulty
• Plug or built-in socket faulty
• Motor protection switch faulty or activated
No mortar flow (Air bubbles)
Possible causes:
• Bad mixture in mixing tube. Add more water.
• Mortar clogs, narrowing the mixing tube inlet. If this doesn’t help, clean or replace mixing shaft.
• Inlet filter on mixing tube is wet. Dry mixing tube inlet and restart.
• Mixing shaft faulty
• Motor catch faulty. Replace motor catch.
Mortar flow “thick”
Possible causes:
• Mixing shaft faulty; no original PFT mixing shaft. Adjust to normal setting, readjust or replace pump components.
• Pressure reducer misadjusted or faulty Eliminate any other faults.
• Rotor worn, faulty
• Stator worn or too loose at clamp
• Clamp faulty (oval)
• Inner wall of mortar hose faulty. Replace mortar hose.
• Rotor too deep in pressure flange. Check mixing shaft and motor catch.
• No original PFT spare parts
Water level rises in mixing tube during operation
Possible causes:
• Backpressure in mortar hose higher than pump pressure. Readjust stator or replace it.
• Rotor or stator worn If necessary, also replace rotor.
• Hose block due to mortar being too thick (high pressure due to low water factor). Remove hose blocks.
Fault indicator lamp lights up
Overload
Possible causes:
• Motor protection switch (16 A) activated (pump motor). Turn protection switch back on, clean mixing tube and increase water supply on starting the machine.
• Pump blocked with dry material
Machine does not start
Electricity
Possible causes:
• Power supply okay?
• FI safety switch activated?
• Main switch turned on?
• Fault indicator lamp lights up?
• Motor protection switch activated?
• Self-locking device not activated?
• Contactor faulty?
• Fuses faulty?
• Water safety switch misadjusted?
Machine does not start
Water
Possible causes:
• Water. Check the water supply
• Water pressure too low. Clean the dirt filters
• Gauge indicates pressure below 2.2 bar. Switch on the high pressure pump
Air
Possible causes:
• Insufficient pressure gradient in the remote control due to blocked air pipe or air nozzle tube. Clean blocked air pipe or air nozzle tube!
• Air safety switch misadjusted
Water isn’t running (No display at flow meter)
Possible causes:
• Solenoid valve (hole in membrane blocked)
• Magnetic coil faulty
• Pressure-Reducing valve shut
• Water inlet on pump tube blocked
• Needle valve shut
• Cable to solenoid valve faulty
The machine stops after a short while
Possible causes:
• Water inlet filter contaminated. Clean or replace filter
• Pressure reducer filter dirty
• Hose connection or water pipe too small. Enlarge water inlet
• Water suction pipe too weak or too long. If necessary, connect additional high pressure pump
The machine does not stop
Possible causes:
• Air pressure safety switch misadjusted or faulty
• Adjust air pressure safety switch
• Air hose or gaskets faulty – Replace air hose or check compressor
• Air tap on spraying gun faulty
• Compressor output insufficient
• Air supply not connected to compressor
Mortar flow “thick”
Possible causes:
• Not enough water. If there is not enough water, add more
• Water safety switch misadjusted or faulty. Increase water quantity by 10 % for approx. half a minute, then return slowly to normal setting.
Fault indicator lamp lights up
Overload
Possible causes:
• Insufficient water quantity
