Acuity Brands Lighting Holophane 05, Руководство пользователя

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4.4 POWER CORD REPLACEMENT
4.4.1 Remove the handhole cover. Turn the circuit
breaker off. Disconnect the plug and connector.
4.4.2 Remove power cord plug and the cord clamp that
is positioned just under the clevis.
4.4.3 Strip 18 in. of the outer jacket off the end of the
power cord. Be sure the power cord stays in the center
of the clevis assembly.
4.4.4 Strip 18 in. of the outer jacket off the end of the
new replacement cord. If either or both power cords
have more than three conductors, cut the extras off as
they are not needed.
4.4.5 Braid the two cords together end-to-end (approx.
18”). Keep the braid tight and the diameter as small as
possible.
4.4.6 Attach small gauge wire ties approximately 2
inches apart the whole length of the braid.
4.4.7 Cut off the excess conductor ends used in
braiding and wrap the complete connection with tape.
Check to see that the splice will pass freely through the
hole in the clevis. If not, rework the splice until it will.
4.4.8 Install the cord grip, rubber boot (if used) and
plug to the other end of the replacement cord. (See
Figure 20).
4.4.9 Connect the pigtail connector to the power unit or
to the transformer as required. Turn on the circuit
breaker. Unlatch and lower the ring. Be sure the new
power cord feeds properly into handhole as the ring is
lowered.
4.4.10 Tie a light rope to the new power cord near the
plug.
4.4.11 Pull on the old power cord, pulling the new cord
over the pulleys and down the outside of the pole. As
the power cord is pulled, keep tension on the rope
since the cord will begin to move due to its own weight.
4.4.12 The new power cord may not come all the way
down to the ring. If this happens, raise the ring approxi-
mately 10 ft. while keeping tension on the old cord.
Then lower the ring and the cord will come down with it.
4.4.13 Disconnect the old cord from the cord clamp and
H O L O P H A N E High Mast
Lowering Devices SECTION IV
21
junction box on the ring and cut the new cord just above
the splice and thread it down through the cord clamp and
into the junction box.
CAUTION
Limit the length of cord between the junction box and
the cord clamp to avoid its interference with the iris arm
mechanisms.
Remove the slack in the cord. Tighten all the cord
clamps and wire the new cord into the terminal blocks.
Check the circuit.
4.4.14 Raise and latch the device.
4.4.15 Check the cord grip at the clevis and make sure
the spacing is correct. (See Figure 20).
4.4.16 Turn off the circuit breaker.
4.4.17 Disconnect the pigtail connector from the power
unit and connect it to the lighting power cord.
4.4.18 Turn on the circuit breaker.
4.5 LUMINAIRE REMOVAL
CAUTION
If it is necessary to remove a luminaire or components
of a luminaire that is mounted on the ring assembly,
make sure the luminaire or its components, or an
equivalent weight, is returned to its mounting arm
before attempting to latch the device. Failure to do this
may result in the device not latching or unlatching
properly.
4.6 LATCH SYNCHRONIZATION ADJUSTMENT
AND LATCHING
CAUTION
This adjustment is necessary to insure that the device
will latch and unlatch dependably.
4.6.1 The adjustment of the hoisting cables is accom-
plished by using wooden cable markers attached to the
hoisting cables. These markers are positioned by
raising the mounting ring until markers slide down the
cables as they are against the latch barrels. The ring is
lowered, measurements are taken, and cable adjust-
ments made. For complete step by step instructions to
accomplish this, refer to paragraphs 2.8.1 through
2.8.7. Carefully follow all steps.