18
S&C Instruction Sheet 761-505
Installation
Checking Alignment
STEP 18.
Remove the ties holding the switch blades to
their stationary main contact assemblies and the
ties holding the toggle mechanisms to their
stops. See Figure 20.
Remove the 45-degree positioning stud from
each rod guide. See Figure 16 on page 16.
Open and close the switch
slowly
to ensure
no operational difficulties are encoun tered due
to undetected damage in shipping.
CAUTION
The switch should be opened and closed
slowly only when checking for alignment
and complete closure.
When opening or closing the switch in
service,
do not
slow down or stop part way.
Arcing can occur if the switch is partially
open or partially closed.
STEP 19.
Move the operating handle slowly to the
Closed
position. See Figure 21. A defi nite resis tance
should be felt at the end of the stroke, indicating
that all slack in the operating link age has been
taken up.
Figure 20. Removing the tie at the stationary main contact
assembly.
Figure 21. Verifying the slack has been taken up in the operat-
ing linkage.
Remove tie
