Maxi Comet Executive Exec-56-G - Exhaust Blower Motor Rotation Checkout

Comet Executive Gas Installation
2-17
Exhaust Blower Motor Rotation
Checkout
After all utility connections are completed,
the unit can be energized and checked to verify
the correct rotation of the exhaust blower motor.
All maintenance procedures should be handled
by at least two qualified persons. Using the
“buddy system” facilitates a quicker procedure
and decreases the risk of an accident.
Required Tools
Screwdriver
1. Turn power ON at the main disconnect
switch.
2. Start the unit by pressing the green START
button.
3. IMMEDIATELY press a red safety STOP
button.
4. Look at the vented cap of the exhaust
blower motor as it slows down. The rota-
tion direction should be clockwise (Figure
2-17).
5. As appropriate:
• If the motor is rotating in the correct
direction, go to the next procedure.
• If the rotation of the motor is not in the
correct direction, go to the next step.
WARNING
Only a qualied electrician
should make or correct any
electrical connections in or
to the unit.
6. Turn power OFF at the main disconnect
switch.
7. Open the right endframe door.
8. As appropriate:
• For 3-phase machines, disconnect
and interchange any two of the three
exhaust blower electrical supply wires
connected to the bottom of the canopy
motor protector (Figure 2-11, A).
• For single phase machines, remove
the wiring box cover to the exhaust
blower motor and interchange the red
and black leads.
NOTE: Make sure the electrical
supply wires are securely
connected.
9. Close and secure the right endframe door.
10. Repeat Steps 1 to 4 to make sure the
exhaust blower motor is rotating in the
correct direction.
Figure 2-17: The exhaust blower motor should be
turning in the direction of the arrow.
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