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P a g e
OPERATION
Note:
Test the OTL system at least once per year to verify its functionality.
Failure to set the OTL
voids the manufacturing defect warranty if over temperature damage occurs.
S
ET THE
O
VER
T
EMPERATURE
L
IMIT
This procedure sets the mechanical heating limit cutoff to approximately 1˚C above the current
chamber temperature.
Perform this procedure when the unit has been running with no temperature
fluctuations at your application temperature
for at least 8 hours.
If the Over Temperature Limit sporadically activates after setting the control, turn the dial very slightly
to the right (clockwise). If the OTL continues activating, check for ambient sources of heat or cold
that may be adversely impacting the unit temperature stability. If you find no sources of external or
internal temperature fluctuations, contact Tech Support or your distributor for assistance.
End of Procedure
1.
Set OTL control dial to its maximum setting,
if not already set to max
2.
Turn the dial counterclockwise (to the left) until the OTL light illuminates and the audible alarm
sounds
•
There is a soft click when the OTL begins rerouting power away
from the heating elements.
3.
Slowly turn the dial clockwise (to the right) until the OTL light and audible alarm both turn off
•
The Over Temperature Limit is now set approximately 1˚C
above the current chamber air temperature.
4.
Leave the OTL dial set just above the activation point
Optional:
Turn the dial slightly to the left (counterclockwise)
•
This sets the OTL cutoff threshold nearer to the current
chamber air temperature.