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NOTE: The glass dome is part of the explosion-proof
housing. In applications where the dome requires added
protection, a separately purchased metal guard (DGXC-
SB) can be attached.
Figure 1 Exploded view
A
B
C
D
E
F
See instruction sheet manual 25500050 for mounting
(CMXC-SB, PMXC-SB, WMXC-SB), electrical wiring, and
installation instructions.
WARNING SHOCK HAZARD— To avoid electrical shock
hazards, do not connect wires when power is applied. To
reduce shock hazards during maintenance, polarity must
be observed when connecting AC units to the power
source.
After the mount is installed and wired, the 27XL threads
onto the mount making electrical connection. Make
sure the o-ring seal is present on the mount and tighten
the unit to the mount until the seal is fully compressed.
Installation is complete. The unit is activated by applying
voltage to the unit.
Maintenance and Service
EXPLOSION HAZARD— Do not disconnect the equipment
while the circuit is live or unless the area is known to be
free of ignitable concentrations.
To maintain the explosion-proof integrity of the
enclosure, DO NOT damage the glass dome or threads
while disassembling or reassembling unit. Lubricated
joints exposed for long periods of time may attract
small particles of dirt or other foreign materials. Body
and cover joints should be reassembled as quickly as
possible.
2
G
H
A. Pendant mount
B. Main housing
I
C. Lens clip screw
D. Lens clip
E. LED Array
F. Lens
G. Set screw
H. 3/4" N.P.T. conduit
I. Terminal block
J. Mechanism assembly
K. Glass dome assembly
L. Glass dome
J
K
L
Cleaning the Enclosure
Maintenance procedures sometimes require fixtures to be
hosed down for good housekeeping. The circuit must be
turned OFF and the glass dome MUST be allowed to cool
to ambient room temperature before cleaning.
The fixture should be cleaned periodically to maintain
maximum light output. Only mild, non-abrasive cleaning
agents should be used. The glass dome should be
regularly inspected for scratches and chips, and if
damaged, MUST be replaced.
Lubrication
The threaded joint on the pendant mount should be kept
well lubricated with a corrosion-inhibiting grease such
a petrolatum or soap-thickened mineral oil. If corrosive
materials have accumulated on the explosion-proof joints
and cannot be removed with solvents, the parts should be
discarded and replaced.
EXPLOSION HAZARD— Never use an abrasive material
or file to remove corrosive materials from threaded
surfaces. In extremely corrosive locations, equipment
should be periodically inspected to guard against
unusual deterioration and possible porosity, since this
may weaken the enclosure structurally.
Service
Technical Assistance: Contact our Technical Support
Team at +1 708-587-3587 or signalsupport@fedsig.com.
Repair Service: A return authorization is required. Contact
your Authorized Distributor or Federal Signal Customer
Support. Defective products under warranty will be
repaired or replaced at Federal Signal's discretion.
Product Returns: Returns require authorization from
Federal Signal. Contact your Authorized Distributor for
more information on our return policy or to request a
return.
Replacement Parts
Contact the factory for spare parts availability and part
numbers. Typical spare parts are listed below. Due to
certification, certain component parts are not available
for field replacement. Units with this type of damage must
be either replaced entirely or returned to Federal Signal
for service.
Federal Signal signaling.fedsig.com
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