G
AS
T
RAC
O
PERATING
F
EATURES
GasTrac Process Air Heater
UGD014/0497
4-2
O
PERATION
ESC
SEL
Cooling Exhaust Filter
Prevents contaminants
from entering the elec-
trical enclosure through
the exhaust vent.
The GasTrac Control
This is the primary operating control. You
turn the GasTrac on or off, enter the set-
point drying temperature and start or stop
the GasTrac using this remotable control. A
green light indicates the GasTrac is running.
A red light indicates an alarm condition.
Main Power
Disconnect Switch
Turn the lockable dial to
provide or disconnect
electrical power to the
GasTrac.
The
O
PERATING
section introduces the GasTrac operating fea-
tures and explains how to use the primary GasTrac control to
start and stop drying. For detailed information about the
Temperature, Burner and Variable Speed Controllers, see the
manufacturer’s manuals in the instruction packet.
Electrical Enclosure
Cooling Fan and Filter
Draws outside air
through the enclosure
to cool electrical com-
ponents.
Process High Temperature
Limit Switch
Shuts down the GasTrac when
the process, or drying, tempera-
ture exceeds 450˚F.
Flue Gas High Temperature
Limit Switch
Shuts down the GasTrac
when the combustion exhaust
temperature exceeds 800˚F.
High Temperature Limit
Switch Reset Button
Push to reset the flue gas and
process high temperature limit
switches.
Burner Controller
The Burner Controller is activated
when you press the RUN button
on the main GasTrac control. The
burner controller sends a signal to
the spark igniter, which fires the
metal-ceramic burner. This con-
troller continues to monitor the
fuel train, combustion blower and
other combustion components for
possible problems.
Variable Speed Controller
The Variable Speed Controller automati-
cally adjusts the speed of the combustion
blower by varying the frequency and volt-
age of the signal. Increasing the speed
increases the air-to-fuel mixture and the
heat output of the burner.