Kistler-Morse KM Microcell Bolt-On - Manual (Page 15)

JUNCTION BOX INSTALLATION
CAUTION
Do not install junction boxes in the rain.
Moisture in the junction box will cause
corrosion and system errors.
Note
Junction box mounting hardware is not
supplied by Kistler-Morse
® . Kistler-Morse ®
recommends #8-32 socket head cap screws
and flat washers. The instructions below reflect
this recommendation.
1. Remove the junction box cover.
2. See Figure 3-11. Hold the junction box at the
previously marked mounting location. Mark
the mounting holes. Mark the four outside
mounting holes if mounting on a flat surface,
such as an I-beam or rectangular tube. Mark
the two center mounting holes if mounting on a
curved surface, such as a pipe or round tube.
3. Drill and tap the mounting holes with a #29 drill
bit and #8-32 tap.
Figure 3-11. Junction Box Mounting.
4. Mount the junction box with #8-32 socket head
cap screws and flat washers. Tighten the
screws until snug. Replace the junction box
cover and screws if not ready to begin wiring
to ensure that no moisture enters the junction
box.
WIRING MICROCELLS™ TO
JUNCTION BOX
Note
A. There are two versions of the junction box
PCB. One version (63-1135-01) is used for
vertical Microcells™. The other version
(63-1135-03) is used for Microcell™ rosette
arrays. Ensure you have the correct PCB in
the junction box (See Figure 3-13).
B. The four small holes in the bottom of the
junction box are for wiring the Microcells™
to the junction box.
1. Remove the junction box cover.
2. See Figure 3-12. Place a plastic washer on
a watertight fitting. Thread the Microcell™
cable through a cap and watertight fitting.
Leave an adequate length of cable between
the Microcell™ and fitting to provide a drip
loop (See Figure 3-13).
3. Spread a generous bead of sealant around the
sides of the watertight fitting.
Figure 3-10. Possible Junction Box Mounting Locations.
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