Troubleshooting: Service Assistance for Wilden® Products

Turbo-Flo ADS Troubleshooting Guide

• Pump will not run or runs slowly.

  1. Check air-inlet screen and air filter for debris.
  2. Check for sticking air valve, flush air valve in solvent.
  3. Check for worn out air valve. If piston face in air valve is shiny instead of dull, air valve is probably worn beyond working tolerances and must be replaced.
  4. Check center-block Glyd™ rings. If worn excessively, they will not seal and air will simply flow through pump and out air exhaust. Use only Wilden® Glyd™ rings as they are of special construction.
  5. Check for rotating piston in air valve. This indicates a failed guide pin.
  6. Check type of lubricant being used. A higher viscosity oil than suggested may cause the piston to stick or run erratically. Wilden suggests the use of an oil with arctic characteristics (ISO 15-5 weight).

• Pump runs but little or no product flows.

  1. Check for pump cavitation; slow pump speed down to match thickness of material being pumped.
  2. Check for sticking ball-check valves. If material being pumped is not compatible with pump elastomers, swelling may occur. Replace ball-check valves and O-rings with the proper elastomers.
  3. Check to make sure all suction connections are airtight, especially clamp bands around air intake.

• Pump air valve freezes.

  1. Check for excessive moisture in compressed air. Either install a dryer or hot-air generator for compressed air.

• Air bubbles present in pump discharge.

  1. Check for ruptured diaphragm.
  2. Check tightness of clamp bands, especially at intake manifold.

• Product comes out air exhaust.

  1. Check for diaphragm rupture.
  2. Check tightness of piston plates to shaft.

• Pump rattles.

  1. Create false discharge head or suction lift.