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OPM 4000
Mounting the Air Plenum
and Weather Covers
2-8
5. The flanges must be aligned so that the total deviation of the light
source flange relative to a common centerline does not exceed ±1
the retro reflector flange does not exceed ±3
these limits can be countered with the system's alignment adjustments.
6. Weld the pipe flange to the mounting nipple (Figure 2-4). Care must be
exercised when welding to maintain alignment.
7. Install the pipe flange assembly into the stack/duct wall. The flange
should be 6 to 8 in. (152 to 203 mm) from the stack or insulation
(Figure 2-4).
NOTE
The 1/2 in. (13 mm) diameter hole should now be enlarged to approximately
3-1/2 in. (89 mm) to accept the other flange/pipe assembly.
8. Proceed in the same manner for installation on the opposite side. Install
the other pipe flange assembly with the alignment tool attached, and
secure to the stack/duct wall (Figure 2-4). Maintain concentric alignment
with the pipe flange assembly previously installed on the opposite wall.
NOTE
If installed path length is not within 10% of the factory set path length, return
the unit to the factory so the path length can be reset.
Use the following procedure to mount the air plenum and weather covers.
Control unit, transceiver and retro reflector serial numbers must match in order to ensure
acurate measurements.
NOTE
Before installing the transceiver, retro reflector, or any type of weather cover,
remove the air plenum from both the transceiver and retro reflector. Removal
will make the installation easier with less of a chance of damage while
attaching the air plenums and optional weather covers.
1. Verify that the control unit, transceiver and retro reflector serial numbers
match.
2. If an air plenum is attached to the transceiver or retro reflector, un-clip
both hold-down latches, swing open and lift up and off the hinge pins
(Figure 2-5). Place the transceiver and retro reflector in a safe place.
3. If the OPM 4000 is equipped with weather covers remove the two
weather cover hood hinge pins located on the upper right and left hand
corner of the hood.
NOTE
The air plenum and weather cover are attached to the customer supplied 3 in.
pipe flange by four 2-1/2 in. long 5/8-11 bolts.
Instruction Manual
IM-105-4000, Rev 1.3
October 2008
o
and
o
. Any deviation within
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