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Heaters
Startup /
Shutdown
For Startup:
1. With heaters in
Standby, turn on
blower or dryer.
2. Enable heaters.
For Shutdown:
1. Switch heaters to
Standby.
2. Wait 60 seconds
before turning off
blower or dryer.
Enable
Standby
4-2 l Opera
tion
The HTC Process Air Heater: Control Panel DC
Heater
Enable/Standby
Also is used to reset
shut down alarms (see
“Troubleshooting”
Section 6) and to
“Autotune” the con-
troller (see
“Autotuning” Section
4).
Setpoint
Display
Shows the set-
point value.
Increment/Decrement
Buttons
Used to increase or decrease values.
Actual
Display
Shows the actual
temperature value.
Acknowledge Alarm Button
Under an alarm condition, pushing the
Acknowledge button once turns off the
horn and displays the alarm message.
Pushing the Acknowledge button a sec-
ond time turns off the alarm LED.
Scroll Button
Press to scroll
through the
closed loop menu
list. Pressing the
Scroll button
moves you down
the list.