Land 4500 MKII Premier, Operation And Maintenance Manual

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Model 4500 Premier Dust and Opacity Monitor
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A3-8 Mounting the Transceiver and Retro-Reflector
1 Ideally the instrument should be installed when the process is not operating and the stack is
cold.
2 The air blower unit should operating and connected to the Transceiver and Retro-Reflector
before the instrument is mounted on to the flanges.
3 Check that each mounting stud has six pairs of spring washers (5) arranged as shown - these
may have been removed if the flange alignment tool was used.
4 Place a rubber sealing band over the mounting flanges for the Transceiver and Retro-Reflector.
It cannot be fitted after the instrument is mounted on the flange.
5 Remove the three M12 nuts (4) and dome washers (7) from the mounting flange (1), and
locate the Transceiver (2) on to the studs (3).
6 Replace the Nyloc nuts (4) and dome washers (7) and tighten them, compressing the spring
washers (5), until there is a gap of 13 mm (½”) between the two flanges (1 and 2), all round.
Pull the sealing band (6) into place over the gap.
6 Install the Retro-Reflector following the same procedure.
sealing band
1 2 3
4 5 6
13 (½")
7
mounting
flange
transceiver