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70304601
Adjustments
Loading Door Switch
The door switch should be adjusted so the cylinder
stops when door is opened 2 inches (51 mm) plus or
minus 0.25 inch (6 mm). This switch is a normally
open switch and is closed by the hinge cam when the
door is closed. If adjustment is required, refer to
Figure 15 and proceed as follows:
1. Close door and start tumbler, slowly open loading
door. Cylinder and heat system should shut off
when door is open 2 inches (51 mm) plus or
minus 0.25 inch (6 mm).
2. Slowly close the loading door. When door is
2 inches (51 mm) from being fully closed, the
door switch actuating bracket (located on the
door) should depress the button and the switch
arm with an audible “click.”
3. If the actuating bracket does not operate the
switch at the appropriate door closure, bend the
actuating switch bracket in or out to achieve
proper actuation.
Figure 15
Airflow Switch
The airflow switch is set at the factory for proper
operation. No adjustment necessary.
The airflow switch operation may be affected by
shipping tape still in place, lack of make-up air, or an
obstruction in the exhaust duct. These should be
checked and the required corrective action taken.
IMPORTANT: Airflow switch vane must remain
closed during operation. If it opens and closes
during the drying cycle, this indicates insufficient
airflow through the tumbler. If switch remains
open, or pops open and closed during the cycle, the
heating system will shut off. The cylinder and fan
will continue to operate even though the airflow
switch is indicating insufficient airflow.
NOTE: To properly mount the airflow switch
bracket, or in case of a load not drying, the airflow
switch bracket may need to be checked for proper
alignment. Be sure the locator pins are securely in
their respective holes before tightening the bracket
mounting screws. This will assure proper
alignment of the airflow switch arm in the channel
of the airflow switch bracket and prevent binding
of the arm.
TMB2077N
1 Airflow Switch Actuating Bracket
1
WARNING
The tumbler must not be operated if the
airflow switch does not operate properly.
Faulty airflow switch operation may cause
an explosive gas mixture to collect in the
tumbler.
W072