Specifications

31 Barnstead |Thermolyne • 800-553-0039
d. With the door closed loosen the screws on the microswitch and slide the switch downward, so that
the screws are at the bottom of the slots in the mounting bracket.
e. Finger tighten both screws. While holding down the rear of the Microswitch housing, gently push up
on the front switch until you hear a click.
f. Open and close the door; the switch should click when the door is opened approximately 1" and 1/2"
to 1" before the door is closed. Slide the front of the switch up to increase the distance, down to
decrease the distance.
g. Tighten the two screws to secure the Microswitch. Check the operation of the switch as described in
Step f after tightening the screws.
h. Slide control section back and replace the screws described in Step b.
i. Reconnect to power supply.
j. To test the operation of the door switch: turn the power switch on, set the control to a setting high
enough to keep the control from cycling, open and close the door; the cycle light should turn off
when the door is opened approximately 1" and on 1/2" to 1" before the door is closed.
To Replace Control Module:
a. Turn the screw on the control counterclockwise. (Located behind the door on 8 ramp and 8 dwell
models.)
b. As the control module starts to disengage, pull it straight out of the control sleeve.
c. For single set point models, squeeze top and bottom of control and pull straight out.