38
of 53
Follow these steps to replace the auto transformer:
Step
Action
1
Switch off all powers of the unit
2
Unscrew the 6-M4 nuts on the two side flanges, and remove them
3
Unscrew the 7-M4 torx screws on the back down cover, and then
remove the back down cover
Caution: the power cable linked on the connector
4
Unplug all the connectors, Unscrew the 4-M4 nuts which fix the auto
transformer bracket
5
Remove the auto transformer with its bracket
6
Exchange the auto transformer, and mount it
7
Mount the back down cover again
8
Switch on power
Below illustrates the connectors of the auto transformer:
Colour
Function
Red
Output:
24 VAC
2 way
connector
Red
Output:
24 VAC
Yellow
Output:
40 VAC
-
3 way
connector
Yellow
Output:
40 VAC
Or-
ange
Input:
230
VAC
Red
Output:
180
VAC
Brown
Output:
120
VAC
4 way
connector
Black
0 V
Primary
Secondary 1
Secondary 2
Summary of Contents for DCU22-2000DH
Page 51: ...51 of 53 12 Appendix Dimension...
Page 52: ...52 of 53 Wiring diagram...
