2.5 Completing the Pole-top Assembly
2.5.1
If the device is equipped with a bumper ring
instead of iris-type guide arms, proceed to paragraph
2.5.3. Otherwise, attach both guide arm spring brack-
ets to the ring. (See Figure 13) The double washers
must be installed between the brackets and the ring to
avoid possible interference with the luminaire mounting
brackets which will be mounted to the ring later.
Tighten each locknut until it is snug and then loosen it
about one half turn to allow the bracket to pivot.
2.5.2
Adjust the guide arms so the distance between
each wheel and the surface of the pole is 1/4 - 1/2 in. It
will be necessary to lift the ring to center the wheels
while checking the clearance between the wheels and
the pole. The adjustment is made by rotating the two
adjustment nuts on the ends of the two spring guide
rods. Use two wrenches to lock the adjustment nuts in
place by jamming them together tightly. (See Figure
13)
HOLOPHANE
High Mast
Lowering Devices
SECTION II
2.5.3
Install the junction box arm on the ring at the
location immediately adjacent and to the right of the
power cord slot. (See Figure 14)
2.5.4
Install the junction box onto the left side of the
junction box arm using the four 1/4-20 nuts and
lockwashers supplied in the bag attached to the strain
plate.
CAUTION
Do not attempt to remove the nuts attached to the studs
protruding from the back of the junction box.
Figure 13
WASHERS (2)
ANGLE
BRACKET
ADJUSTMENT
NUTS
RING
LOCKNUT
2.5.5
Install the power cord strain plate, attached to the
power cord, to the underside of the top flange of the
ring using the 3/8” bolt and locknut supplied. (See
Figure 15)
GR1142
Figure 15
2.5.6
Pull the power cord down the pole until tightly
seated onto its rollers. If the cord extends below the
pole base, it is advisable to move the clamp toward the
clevis plate and then secure the excess cord to protect
it during the pole erection.
2.5.7
If the optional lightening rod is supplied, find the
dimple located on the top surface of the headframe
cover. Otherwise, proceed to step 2.5.8.
2.5.7.1
Punch a 7/8" hole in the cover at the dimple
location and install the rubber grommet.
2.5.7.2
Thread the lightning rod into the lightning rod
bracket, tightening securely.
Figure 14
GR1224
GR1143
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