Dri-Air Industries HP4-X 18-100 Manual de instruções - Página 13
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Imprimir páginaDRYER OPERATION
TROUBLE SHOOTING
OPERATING MANUAL - ARID-X, HP4-X 18-100 FM DRYERS
Revision 10/8/02
DRI-AIR
INDUSTRIES, INC.
The new Dri-Air Standard PLC and MICROPROCESSOR
Electrics were designed for quick diagnosis of problems.
The following steps should be done before proceeding with
other diagnostic steps.
1. Check the Power Circuit:
a. Incoming fuses or circuit breaker
b. All dryer fuses:
Each fuse, with the exception of the main fuses, has
a blown fuse indicator light that illuminates when the
fuse is blown.
c. Is power supplied to the unit?
d. Check heater continuity using a volt ohmmeter.
2. Compressed Air:
For those models that require compressed air.
a. Is compressed air connected with at least 60 PSI
b. Check water separator and drain if necessary
c. Pressure gage should read 60 PSI
3. Air Flow Circuit:
a. Ensure Zone Valve position corresponds to the
regeneration cycle by comparing the Zone position lights
on the Zone Valve to the ZONE position lights on the
dryer panel.
b. Make sure that all hoses are connected, not crushed,
and free from obstructions.
c. Inspect filter and make sure cover is tight and the filter is
clean.
4. Control Circuit:
a. Using the PLC/MICRO Display Panel ZONE indicator
lights as a guide for the dryer regeneration cycle, check
that all inputs/outputs are proper for the part of the
regeneration cycle that the machine is in.
b. Monitor the PLC output lights to ensure the
corresponding LED on the power board is illuminated
and there is an output voltage to the heater.
5. Operating Conditions:
a. Check the process temperature. It should not be set
below 140° F (60° C) because the unit will go into high
temp alarm.
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