220736A,B INTERNAL AUXILIARY SWITCHES
7 63-2228—03
a. If contacts are open, rotate cam clockwise until N.O.
contacts close.
b. If contacts are closed, rotate cam counterclockwise
until N.O. contacts open.
5. For switch differential of 10°, the cams must be rotated
approximately 180° prior to setting the switching action.
Refer to Fig. 3. Check continuity of the N.O. contacts
and rotate cams as follows:
a. If contacts are open, rotate cam counterclockwise
until N.O. contacts close.
b. If contacts are closed, rotate cam clockwise until
N.O. contacts open.
6. Check for proper switch differential and switching of
auxiliary equipment by driving the motor through full
stroke (in both directions). If necessary repeat steps
4 and 6 for 1° differential, or 5 and 6 for 10° differential
until correct switching action is obtained.
7. Adjust second switch - if applicable. To stop the motor at
desired position, disconnect jumpers. Motor will remain
at this position until connection is restored. Proceed
with step 8 or step 9 using corresponding wire colors.
8. Disconnect 24 V power and switches.
9. Connect auxiliary equipment to auxiliary switch leads.
See “Wiring” on page 5.
10. Reconnect controller and power supply to motor.
11. Replace cover of wiring box.
CHECKOUT
Fire or explosion hazard. Can cause severe injure
or death.
When auxiliary switches control combustion
equipment, incorrect wiring of the switches can allow
the burner to come on at high fire. Check auxiliary
switch wiring and cam adjustment before turning on
the system. Watch the controlled equipment through
one complete cycle. Shut the system down
immediately if switches do not correctly sequence the
equipment.
Use the controller to run the motor fully open and then fully
closed. Make sure that the auxiliary equipment starts and
stops at the desired points in motor rotation. When checkout is
complete, return the controller to the desired setting.
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