Conair HTC 120, Руководство пользователя

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Tr o u b l e s h o o t i n g l
6-17
6
Tro
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sh
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Problem
Regeneration Low
Temperature
– The regenera-
tion temperature is less than
the low temperature setpoint
for the specified time.
Defaults are 200°F {93°C} for
20 seconds.
Return Air Temperature
RTD Integrity
– The dryer
continues to run with a passive
alarm.
Process Material
Temperature RTD Integrity
Return Air Temperature
out of the hopper RTD
Integrity
– If the return air
RTD is faulty, it shuts down
the dryer.
Possible cause
The regeneration heater has failed.
The output on the control board has
failed or the fuse has blown.
The regeneration RTD is loose or has
fallen out.
There is a loose connection in the wiring
leading to the RTD.
The connection of the RTD plug on the
control board is loose.
The return air RTD has failed.
The control board has failed.
The temperature RTD is damaged or
malfunctioning.
There is a loose connection in the
wiring leading to the RTD.
The connection of the RTD plug on the
control board is loose.
The return air RTD has failed.
The control board has failed.
Solution
Check the heater fuses, and resistance
across each leg of the process heater.
Replace the control board or the fuse.
Check the regeneration RTD and tighten
if needed.
Check the RTD plug connections and
make any necessary repairs.
Check the plug connection and tighten if
needed.
Replace the return air RTD.
Replace the control board.
Replace the RTD.
Check the RTD plug connections and
make any necessary repairs.
Check the plug connection and tighten
if needed.
Replace the return air RTD.
Replace the control board.
Passive Alarms
If an alarm occurs, a red dialog box is displayed on the dryer’s touch screen
control. The dryer continues to operate, but this problem could prevent cor-
rect drying of your material. The dialog box will indicate whether the alarm
is a shut down alarm or a passive alarm.