Shutdown Alarms - Conair Carousel Plus D Series User Manual

S h u t d o w n A l a r m s
When an alarm condition appears on the control screen, it may be a shutdown
or a passive alarm. If the alarm is a shutdown alarm, the dryer will shutdown
automatically to prevent damage to the equipment or personnel. Note that the
bottom of the control will display a green alarm LED until the condition is re-
solved.
Problem
Regeneration Heater High
Temperature – The snap
switch in the regeneration
heater tube activated due to ex-
cessive temperature.
Return Air High Tempera-
ture – If the return air tempera-
ture at the inlet to the blower is
greater than 180°F {82°C}, it
shuts down the dryer. (The re-
turn air temperature on
D1300-5000 dryers is meas-
ured at the inlet to the desic-
cant 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 ma-
terial.
You are drying at a high drying tempera-
ture above 180°F {82°C} or you are run-
ning at low throughputs.
The aftercooler does not have enough
water.
The aftercooler coils are dirty.
0
NOTE: Some alarms can be set for
shutdown or passive. These alarms may
be listed in both sections.
Solution
Locate and remove any airflow
tions.
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 re-
lays (SSRs).
Replace the board.
Make sure your material supply system
is working properly.
Ensure water flow to the aftercooler.
Turn on the water supply, or fix any
leaks or blockages.
Clean the aftercooler coils. See Mainte-
nance section entitled, Cleaning the af-
tercooler coils.
restric-
Tr o u b l e s h o o t i n g l 6 - 7