PFT G 54 E
Operating Instructions
09/2006
Knauf PFT GmbH & Co.KG
30
Fault – Cause - Remedy
Fault Cause
Remedy
Machine will not start
Water
- Check water supply
Water pressure too low -
- Clean water inlet filters
Gauge indicates less than 2.2 bar
- Switch on high pressure pump
Machine will not start
Electricity
- Power supply okay?
-
Earth leakage circuit breaker
activated?
- Main switch on?
- Fault lamp on?
- Motor protection switch actuated?
- Self-locking key not pressed?
-
Contactor
defective?
-
Fuses
defective?
- Water safety switch misadjusted?
Machine will not start
Air
-
Insufficient pressure gradient in
remote control due to blocked air
line or air nozzle tube
Clean blocked air line or air nozzle
tube!
- Air safety switch misadjusted
Machine will not start
Material
- Too much thickened material in the
hopper or mixing area
Half-empty the hopper and restart
it.
- Material in pump component too dry
WARNING!
Turn off main switch and pull plug
first
Water is not running
(no indication by flow meter)
-
Solenoid valve (bore hole in
membrane blocked)
- Solenoid coil defective
- Pressure reducing valve closed
- Water inlet on pump tube blocked
- Needle valve closed
- Cable to solenoid valve defective
Pump motor will not start
- Pump motor defective
- Connection cable defective
- Plug or mounted socket defective
- Motor protection switch defective or
actuated
Stops after a short time
- Water inlet filter dirty
Clean or replace filter and
- Pressure reducer filter dirty
- Hose connection or water line too
small
enlarge water inlet.
- Water suction line too weak or long
Connect additional high pressure
pump if necessary