Det-Tronics PIR9400 PointWatch Infrared Hydrocarbon Gas Detector - Manual (Page 23)

21 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.
ELECTRONICS ASSEMBLY
ELECTRONICS MOUNTING COVER
WINDOWS (2)
REFLECTOR TUBES RETAINER MIRROR ASSEMBLY
MIRRORS
HYDROPHOBIC FILTER
(Used on Some Stainless Steel Models)
D1758
NOTE: IT IS NOT NECESSARY TO REMOVE THE
ELECTRONICS ASSEMBLY FROM THE
DETECTOR BASE ASSEMBLY.
Figure 27—Stainless Steel PIR9400 Detector Disassembly for Cleaning