Dri-Air Industries HA1000B, Руководство по эксплуатации

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DRI-AIR
INDUSTRIES, INC.
OPERATING MANUAL - HA750-1500B HOT AIR DRYERS
Revision 10/8/02 Page 9
out with compressed air. DO NOT OPERATE DRYER
WITHOUT FILTER ELEMENT INSTALLED.
Heater Maintenance
Annually check terminal connections on each heater element
for looseness. Ensure that they are tight to prevent overheat
conditions.
Basic Trouble-Shooting
In the unlikely event that an operating failure should arise,
take the following steps to troubleshoot the problem.
1. Blower does not rotate:
a. Check incoming power fuses or circuit breaker
b. Check all dryer fuses with multimeter.
c. Check blower overload.
2. Inaccurate process air temperature readout:
a. Ensure thermocouple tip is situated in center of air
stream.
b. Check hose connection.
c. Check Heater ON light.
3. Air Flow Circuit:
a. Check outlet port on hopper and ensure that no material
is obstructing air flow through hopper.
b. Make sure that process air hose is properly connected,
not crushed, and free from obstructions.
c. Inspect filter and make sure cover is tight and the filter
element is clean.
4. Temperature Controller display flashing:
a. Check for open or disconnected thermocouple.
b. Temperature exceeded “High Limit”.
c. Check thermocouple location.
5. Process Air Heaters will not actuate
a. Allow dryer to cool. Safety snap disc may have tripped.
b. Check safety snap disc in heater box.
6. Operating Conditions:
a. Check the process temperature. It should not be set
below 125 degrees F (52 degrees C) or above 250
degrees (121 degrees C).
BASIC
TROUBLESHOOTING