Downflo Workstation, DWST 4-1 to 6-4
14
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.
