Downflo Workstation, DWS 4-1 to 6-4
38
Problem
Probable Cause
Remedy
IEC Control Panel with Starter, PLC, and Magnehelic Gauge
Aftershift pulse not
working properly
Not wired correctly
Check and correct motor wiring for supply voltage.
See motor manufacturer's wiring diagram. Follow
wiring diagram and the National Electric Code.
Blown fuse
Check the transformers primary and secondary fuses
FU1 and FU2.
Lack of compressed air
Maintain 50-60 psig. Bleed compressed air supply.
Check for debris, valve wear, or diaphragm failure by
removing the diaphragm cover on the pulse valves.
Check for solenoid leaks or damage. If pulse valves
or solenoid valves and tubing are damaged, replace.
Push buttons do not
work, no pulse cleaning
Loss of power
Check disconnect, fuses and transformer
Defective PLC
Check that the power LED, POW is lit. If neither or
only one LED is lit, replace the PLC. Check error
LED's, ERR1 and ERR2. If lit, replace the PLC.
