10
Preparing the Installation
Doc 01-G0610
Rev A
Operator Preparation
1 Open the service cover on the operator by removing 6 screws and pulling down and out.
Inside you will find the electrical enclosure stored vertically. All the electrical connections for
controls that the installer needs are provided here on the electrical box.
2 To service the solid state controller or other components of the electrical box, slide the
electrical box out, then pivot down.
3 Remove 1 screw securing the electrical box cover.
CAUTION
Never remove cover of high voltage compartment unless power is off. Electric shock
and serious injury could result.
The S3 PCB is the major component of the electrical box and settings can be made by
changing the two dip switches. There is mixed voltage in this box, both line voltage, and
control voltage 24 VAC.
4 Select the preferred method of electrical wire entry. The SW420 is provided with (6) holes in
the bottom of the chassis for electrical entry. Power supply wiring will be routed to the large
double gang electrical box on the left side of the operator.
Wire Nut
Connections
Cover
Line Connector
01-G0610F5
Controls and
Accessories
Figure 4
