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Section 1
General Information
Receiving & Installation 3-13MN722
Figure 3-1 Control and Contactor Transformer Locations
Control Sizes
C+, D, D+
Logic Control
Board
Control
Transformer
Control Size
E
Control Size
F
Control
Transformer
Contactor
Transformer
Input
Contactor
Control Size
G+
Contactor
Transformer
Fan
Transformers
Input
Contactor
Control
Transformer
Contactor
Transformer
Input
Contactor
Not drawn to scale or proportion
Swing out panel
Fuse
Block
xfmr xfmr
Size C+, D, D+ E, and F size control procedure:
Control Transformer
1. Terminate drive operation and disable the control.
2. Remove all power sources from the control. If power has been applied, wait at
least 5 minutes for bus capacitors to discharge.
3. Remove or open the front cover and locate the control transformer (Figure 3-2).
4. Remove the wire from terminal 5 of the control transformer.
5. Place the wire that was removed from terminal 5 onto terminal 4.
6. Install or close the front cover.