T
EMPERATURE
C
ONTROLLER
A
LARMS
GasTrac Process Air Heater
UGD014/0497
6-4
T
ROUBLESHOOTING
Alarm
Deviation
Band
The drying, or
process circuit, tem-
perature is higher or
lower than the set-
point alarm band
allows.
Sensor
Break
The sensor input for
RTD temperature
probe has failed.
Possible cause
Is something blocking or
restricting the flow of
drying, or process, air?
Is the RTD temperature
probe installed correctly?
Is the temperature range
for the deviation band too
narrow?
Is the RTD temperature
probe connection loose or
incorrectly installed?
Is the RTD temperature
probe damaged?
Solution
❒
Check the process filter in
the host dryer. Clean or replace
the filter if it is clogged or
damaged.
❒
Check the process air hoses
for leaks, crimps, blockage or
loose connections. Remove
obstructions. Repair leaks or
loose connections.
❒
Check the process air blow-
er in the host dryer. If it is not
running correctly, see the
dryer’s manual.
Make sure the sensing end of
the RTD probe is positioned
near the center of the process
air line at the hopper inlet.
Temperature readings will be
incorrect if the sensing end is
too close to the wall of the
inlet hose or pipe.
Increase the deviation band
5˚F at a time. The default set-
ting is 20˚F. To avoid nuisance
alarms, do not adjust this band
more than necessary.
❒
Verify that the RTD temper-
ature probe is installed.
❒
Check for a loose RTD con-
nection at the GasTrac control
or the process air inlet of the
hopper.
Replace the RTD temperature
probe.
1dEV
S.br
The Temperature Controller will flash an alarm
message in the upper or lower display window.
WARNING: The GasTrac should be test-
ed and repaired only by qualified technicians
equipped with the correct tools and trained in
the maintenance and repair of electrical sys-
tems and industrial gas appliances.
RUN
MAN
SP2
OP1
OP2
REM
HOLD
2216
!