Replacing Lamp - Siemens L-852A-D Dualite Manual

Type L-852A-D Dualite Bidirectional Taxiway Light Fixtures

Replacing Lamp

© 2001 Siemens Airfield Solutions, Incorporated
All rights reserved
WARNING: Turn off the circuit before replacing lamp(s).
Failure to observe this warning may result in personal injury,
death, or equipment damage.
WARNING: Allow time for the unit to cool. High interior
temperatures may cause severe burns to personnel. Failure to
observe this warning may
To replace lamp, perform the following procedure:
1. Remove the six 3/8-inch- (9.525-mm-) diameter bolts that hold the
light fixture on the base receptacle.
2. Install two 3/8-inch- (9.525-mm-) diameter eyebolts in two holes (180
degrees apart) on the fixture and insert a 16-inch- (406-mm-) long
steel rod through eyebolts and lift the fixture out of the base receptacle.
3. See Figure 5. Turn the fixture upside down and remove the eight pan-
head screws (9) holding the inner cover to the top cover assembly.
NOTE: The inner cover assembly (10) can now be separated from the
top outer cover assembly (4). The inner cover assembly can now be
moved from side to side to allow for lamp removal without having to
adjust slack in the cordset.
4. Flip the holddown spring clip (11) off the lamp assembly (3), and pull
the lamp assembly horizontally forward out of the socket.
CAUTION: The lamp assembly consists of a lamp and
reflector. It is a single unit and is fragile. Handle with care.
Failure to observe this warning could result in equipment
damage.
5. Install the new lamp by reversing the lamp removal procedure.
CAUTION: Do not touch the quartz lamp inside the reflector
with bare hands when handling the lamp assembly since this
can reduce lamp life. If the lamp is touched, clean it with a lens
cleaning tissue moistened with isopropyl alcohol.
96A0149E
Issued 5/01
Repair
Page 27