Edwards Signaling 97DF - Manual (Page 2)

P-047550-0943 ISSUE 7
Direct Surface Mounting (97 Series Signals Only)
a. Remove the three outer knockouts from the bottom of
the signal base. The location of the knockouts
corresponds to the three outer holes in the gasket provided
in the direct mounting hardware kit shown in Figure 3.
b. Place the 7 3/8" (187 mm) mounting gasket on the
mounting surface and mark the center of the four holes
in the gasket on the surface. Refer to Figure 3. Remove
the mounting gasket and drill a 3/8" (9.5 mm) hole at
each of the marked positions.
c. Install the three rubber expansion plugs provided in the
hardware kit into the three outer holes in the mounting
surface as indicated in Figure 4.
d. Route the wiring from the required power source for the
signal (refer to signal's label for voltage rating) through
the center hole in the mounting surface, mounting gasket
and signal base. Use a suitable means to protect the
wiring from chafing in the hole.
e. Align the holes in the mounting gasket with the holes in
the signal base. Insert the three screws with lockwashers
(provided in the hardware kit) through the three mounting
holes inside the signal base and align the screws with
the rubber expansion plugs as shown in Figure 4. Press
the signal base firmly against the mounting surface and
tighten the screws. Proceed to step 3.
Figure 1. Conduit Mounting of 93 and 97 Series Signals
Figure 2. Conduit Mounting of 94 Series Signal
3. Connect field wiring to signal wiring.
a. 93 and 94 Series: Connect the field wiring to the signal's
wire leads, using wire nuts (not supplied). Polarity is
not important. Connect the green ground wire leads using
wire nuts (not supplied).
b. 97 Series: Connect the field wiring to the signal's wire
leads using wire nuts (not supplied) as follows. Polarity
must be observed. Connect the red positive (+) wire
lead to the positive power source wire and connect the
signal's white negative (-) wire lead to the negative power
source wire.
4. Place the connected wires inside the signal base and
reassemble the signal.
5. Turn on the power and verify that the signal operates properly.