3.
Apply the force from the following table evenly across the width of the belt at the center of the belt span
and measure the deflection.
NOTE
A strip of keystock or similar material may be used to distribute the force evenly across the belt width.
Table 5. Air heater belt deflection force
Belt type
New belt force (measured in
pounds)
Used belt force (measured in
pounds)
B
6.7-9.4
4.5-6.3
4.
With the force still applied, measure the actual belt deflection. Adjust the belt tension if the measured
belt deflection is greater than the calculated deflection.
5.
When the booth has been returned to a safe operating state, remove locks and restore power.
Reset the air heater flame safety control
If the flame safety control alarm light is on (locked out), manually reset the unit.
1.
Reset the flame safety guard.
2.
Reset warning on screen.
Reset the gas pressure switches
Units are equipped with manual reset high and low gas pressure switches. The burner will not operate if a
switch is tripped. To reset a switch, follow the reset instructions provided on the top of the switch.
Reset the high temperature limit switch
Typically, two high temperature limit switches protect the system in the event a failure causing high
temperature in the air heater blower cabinet or high blower discharge temperature. One device
automatically resets when temperature falls under the device's setpoint. The second device requires
manual reset after a high temperature fault. The booth uses one of the following types of manual reset, high
temperature limit switches:
• Honeywell: Press the red button toward the bottom (on the face) of the limit device
• Future Design: Press the reset button.
NOTE
Either type can be reset with or without power applied to the booth.
NOTE
You may not feel any change in the device as you reset it.
Service and maintenance
Global Finishing Solutions
43
239-062 rev 5
