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
