PSG Dover WILDEN A200B Advanced Plastic, Engineering, Operation & Maintenance

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WIL-11060-E-03
Wilden
®
13
Suggested Installation, Operation, Maintenance and Troubleshooting
Operating
Troubleshooting
Pump will not run.
1. Check for pressurized air at the inlet.
2. Check air inlet and filter for debris.
3. Connect a test lamp to the two wires which run to pump
and ensure that the lamp cycles on and off.
4. Make sure that the air valve manual override (small red
knob on front of valve) is switched to the “0” position.
5. Check pilot pressure vent at the top of the operator/ coil
assembly to ensure that it is not clogged.
6. Check for a worn out air valve. If air continually blows out
the exhaust in very large quantities, the air valve seals
may be worn beyond their ability to function. In this case,
the valve must be replaced.
7. NOTE: Before the valve is scrapped, it is possible that it
may be saved by completely disassembling the valve,
cleaning all components and relubricating the valve.
Pump runs but little or no fluid comes out.
1. Check that the discharge isolation valve is not closed.
2. Check that the electronic signal is slow enough that the
pump is able to complete each physical stroke before it
is signaled to change direction. The time required to
complete the stroke is determined by a variety of factors
which include fluid viscosity and head pressure.
3. Check for pump cavitation; slow pump speed down to
match the thickness of the material being pumped.
4. Check for sticking ball check valves. If the material
being pumped is not compatible with the pump
elastomers, swelling may occur. Replace ball check
valves and o-ring with the proper elastomers.
5. Check to make sure that all suction connections are
airtight, and that the clamp bands are properly tightened.
Pump air passages blocked with ice.
1. Check for excessive moisture in compressed air line.
As the air expands out the exhaust during the operation of
the pump, water vapor entrapped in the compressed air
can freeze and block the air passageways in the pump.
If this occurs, it may be necessary to install a coalescing
filter, an air dryer, or a hot air generator for the compressed air.
Air bubbles in pump discharge.
1. Check for ruptured diaphragm.
2. Check tightness of clamp bands, and the integrity of the
o-rings, especially at intake manifold.
Product comes out of the air exhaust.
1. Check for diaphragm rupture.
2. Check tightness of piston plates to shaft.
Pump rattles.
1. See E10 Troubleshooting Guide.
2. Create false discharge head or suction lift.
Solenoid buzzes or solenoid burnout.
1. Incorrect voltage, faulty or dirty solenoid.
Solenoid valve fails to shift electrically but shifts
with manual override.
1. Incorrect voltage, defective coil or wiring.
Solenoid valve fails to shift electrically or
with manual over- ride.
1. Inadequate air supply, contamination, inadequate or improper lubrication,
mechanical binding in the valve.
Valve shifts but fails to return.
1.
Broken spring, mechanical binding.
Excessive leaking from air valve vent.
1. Worn seals in air valve.