D
Trouble Shooting
Air is applied to pump but pump is not starting
1. Clean filters and debris from all fluid lines.
2. Make sure all valves on fluid lines are open.
3. Inspect diaphragms for rupture.
4. Air pressure must not be below 1.4 bar.
Pump is pumping but not priming
1. Check all suction line connections for leakage.
2. Inspect check valves for wear or debris.
3. Suction lift specifications may be exceeded.
4. If fluid is viscous use larger suction lines.
Leakage
1. Retorque all fasteners to specified torque requirements.
2. Replace o-rings.
3. Inspect diaphragm for rupture.
Low flow rate
1. Confirm air pressure and air capacity at the air valve as required.
2. Check for leaks in suction line or obstructions in lines.
3. If fluid is viscous use larger suction lines.
4. Viscosity of fluid may have increased if temperature is lower.
Air in discharge lines
1. Check for leaks in suction lines.
2. Inspect diaphragms for rupture.
Erratic cycling
1. Inspect check valve seats for debris.
2. Inspect fluid lines for debris.
3. Automatic valves must be properly functioning.
4. Viscosity of product may be changing.
Premature destruction of wetted components
1. If fluid is abrasive slow down pump or increase size of pump.
2. Filter fluid for sharp objects.
3. Make sure fluid is compatible with wetted materials.
GB
24
