Det-Tronics PIR9400 PointWatch Infrared Hydrocarbon Gas Detector User Manual

Page 23

95-8440

9.3

iMPoRtant

Do not insert any sharp object into the mirror
assembly. Scratching of the mirrors will void the
PointWatch Detector warranty. Do not use cotton
tipped swabs or buds as they are likely to leave
fiber residue.

5. Clean the two reflector tubes and windows using

the procedure described above. When the mirror

assembly and reflector tubes are thoroughly dry,

replace the hydrophobic filter (if used) and proceed

with re-assembly.

6. Insert the two reflector tubes into the larger holes in

the mirror assembly and ensure that they are fully

seated. Make sure that the retaining ring that holds

the reflector tubes in place is centered on the tubes

and not blocking any holes.

Figure 26—Aluminum PIR9400 Detector Disassembly for Cleaning

ELECTRONICS MOUNTING COVER

ELECTRONICS ASSEMBLY

WINDOWS

MOUNTING TUBES

REFLECTOR TUBES

HYDROPHOBIC FILTER

MIRROR ASSEMBLY

MIRRORS

RETAINER

E1747

NOTE: IT IS NOT NECESSARY TO REMOVE THE

ELECTRONICS ASSEMBLY FROM THE

DETECTOR BASE ASSEMBLY.