Conair HTC 120, Руководство пользователя

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Tr o u b l e s h o o t i n g l
6-7
Shutdown Alarms
If an alarm occurs, a red dialog box is displayed on the dryer’s touch screen
control. The dryer will shut down automatically to prevent damage to the
equipment or personnel. The dialog box will indicate whether the alarm is a
shut down alarm or a passive alarm.
Problem
Regeneration Heater Box
High Temperature
– The
snap switch in the regeneration
heater tube activated due to
excessive temperature.
Return Air High
Temperature
– If the return
air temperature at the inlet to
the blower is greater than
180°F {82°C}, it shuts down
the dryer. (The return air tem-
perature on W1600-5000 dry-
ers is measured at the inlet to
the desiccant wheel.)
Possible cause
The regeneration exhaust is blocked or the
air hoses are loose.
The regeneration blower is not running or
running in the wrong direction.
The isolation contactor failed in the
closed position.
The heater solid state relays (SSRs) failed.
The regeneration heater output on the
board has failed.
The hopper does not contain enough
material.
You are drying at a high drying tempera-
ture above 180°F {82°C} or you are
running at low throughputs.
The aftercooler/intercooler does not
have enough water.
The aftercooler/intercooler coils are
dirty.
Solution
Locate and remove any air flow
restrictions.
Tighten any loose hoses.
Correct the cause of the non-running
blower (fuse, etc.) or reverse the rotation
of the blower.
Replace the isolation contactor.
Replace the failed heater solid state
relays (SSRs).
Replace the board.
Make sure your material supply system
is working properly.
Ensure water flow to the
aftercooler/intercooler.
Turn on the water supply, or fix any
leaks or blockages.
Clean the aftercooler/intercooler coils.
See Maintenance section entitled,
Cleaning the aftercooler/intercooler
coils.