GEH-5748B
INSTRUCTIONS
High Mast Luminaire
READ THOROUGHLY BEFORE INSTALLING
Use only lamps specified on nameplate. Observe lamp manufacturer’s recommendations and restrictions
on lamp operation, particularly ballast type, burning position, etc.
LAMP TIGHTNESS:
The lamp should be securely inserted to NEMA-EEI specified torque of 35 inch-pounds,
which is best achieved by very firmly tightening to insure application of sufficient torque. Tightening must be
sufficient to fully depress and load center contact of socket.
NOTE: Use of lubricants on lamp base or socket can cause rapid lamp failure and voids fixture warranty.
To install lamp in an enclosed luminaire, open six spring latches while maintaining a firm grip on the glass
clampband. Latches are easy to open if the two-stage technique shown in the picture is used. Pull the latch away
from the reflector as shown in Figure 3. Then place fingers between the latch and reflector (Figure 4) and snap the
latch off of the reflector flange.
DO NOT LET GO OF THE GLASS, SO THAT IT WOULD SWING FREE.
GENERAL
This luminaire is designed for outdoor lighting service, and should not be used in areas of limited ventilation,
or in high ambient temperature enclosures. Best results will be obtained if installed and maintained according to
the following recommendations.
INSTALLATION
CAUTION
Unit will fall if not installed properly
•
Follow installation instructions
WARNING
Risk of electric shock
•
Turn power off before servicing
–
see instructions
1.
Loosen the bolt on top of the luminaire and remove the cover.
2.
Slide ballast assembly onto mounting arm as shown in Figure 1. If necessary, adjust bolts 1 through 4 (see
Figure 2) such that opening is slightly larger than mounting arm.
3.
Tighten bolts 1 thru 4 (in sequence shown) until mounting bracket is in contact with mounting arm.
4.
Align bolt 5 with hole in top of mounting arm and tighten until “bottoming” occurs.
NOTE: If mounting arm was not provided by GE or is an older existing GE arm, omit step 4, and after completing
Installation Instructions, refer to Drilling instructions.
5.
Place a level on top edge of ballast housing and snug up bolts 1 thru 4 (4-5 foot-pounds). Unit may be adjusted
up or down 5 degrees with respect to mounting arm. If more lift on front of luminaire is required, first loosen
bolts 1 and 3 slightly, lift luminaire and re-snug bolts 2 and 4. If downward tilt is necessary, reverse procedure.
Side-to-side leveling can be accomplished similarly.
6.
Once the proper level has been achieved, tighten bolts 1 thru 4 to twenty foot-pounds, alternating front to back
across diagonals of brackets as shown in figure 2.
Drilling Instructions:
If mounting arm has no hole to prevent rotation of luminaire or has hole in different location,
refer to steps A thru C below.
A. After bolts 1 thru 4 have been securely tightened (step 6 of Installation Instructions), remove and retain bolt 5.
NOTE: Hole located between bolts 1 and 3 on mounting bracket should be ignored in these instructions.
B. Drill a 21/64” hole into mounting arm by using hole in mounting bracket as a guide. The threads in the mounting
bracket may become damaged but the self-tapping bolt (bolt 5) will cut new threads into the newly drilled
mounting arm, eliminating the need for threads in the mounting bracket.
C. Reinstall bolt 5 and tighten until “bottoming” occurs.
WIRING
Make all electrical connections in accordance with the National Electrical Code and any applicable local code
requirements.
Verify that supply voltage is correct by comparing it to nameplate.
1.
Attach supply leads to terminal board a shown on nameplate.
2.
Replace top housing and tighten bolt.
LAMP INSTALLATION
CAUTION
Risk of burn
•
Allow lamp/fixture to cool before
handling
Figure 4
Figure 3
Figure 5
To close latches get them started by pressing against the pressure point shown in Figure 5, then strike that
pressure point with the heel of your hand.
Optical assemblies designed for 1000 watt lamps are equipped with a lamp support. Be sure the grips are
covered with fiberglass sleeving. If sleeving is missing, replace it before relamping,
ADJUSTMENT OF ASYMMETRICAL (UNDER) REFLECTOR
The inner reflector is attached inside of the outer reflector by means of three clamps located 120 degrees
apart inside the enclosure. Slightly loosen these clamps to allow rotation. To prevent dropping a clamp, dropping
the reflector, or damaging the screw threads, do not loosen the clamps more than necessary.
The inner reflector is aimed by aligning the indented degree marks with the arrow label on the clamp that is
opposite to the hinge. Rotate the inner reflector until the desired position is reached, then tighten the three clamps.
MAINTENANCE AND CLEANING
In order to maintain the high efficiency of General Electric reflectors and enclosures, a regular cleaning cycle
should be established with frequency dependent on local conditions.
Use a soap, cleaner, detergent, or a solution of the same (6-10 ounces per gallon of water or the
manufacturers’ recommendation) which is essentially neutral (pH approximately 6 to 8), nonabrasive, and which
contains no chlorinated or aromatic hydrocarbons. Wash thoroughly in this solution, using a soft cloth, of brush
if necessary. Rinse in clean, cold water and wipe dry.
These instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation, operation or maintenance. Should
further information be desired or should particular problems arise which are not covered sufficiently for the purchaser’s purposes, the matter should be referred to GE Lighting Solutions.
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GE
Lighting Solutions
