S&C Instruction Sheet 761-515
9
Installation
Before Starting
NOTICE
Drawings for standard mounting arrange-
ments show only the minimum or suggested
locating dimensions for the outboard bearing
assembly, vertical-operating-pipe guide
bearings and the operating-handle assembly .
Specific locations are to be determined either
at the job site or by the user’s engineering
department .
Mounting to Wood
NOTICE
When mounting to a wood structure, a
Belleville washer must be used between
the square washer and the nut to maintain
fastener tightness in the event of wood
shrinkage . See Figure 1 .
Operating Pipe Preparation
Switches Supplied with Operating Pipe:
Operating pipes can be cut to length (if not
precut at the factory) before transporting the
switch to the job site. Cutting dimensions are
shown on the erection drawing.
Belleville washer
Figure 1. Use a Belleville washer between the nut and square washer.