C7961E,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR
11 65-0267-09
NOTE: Make sure the red rubber washer between the
gray fiber-neoprene gasket and the back section
of the mounting flange does not protrude over the
window aperture or otherwise obscure the detec-
tor
line-of-sight.
8. Clean both sides of the viewing window (or focusing
lens) using a clean cloth placed over the eraser end
of a pencil.
9. Replace the detector cover and reinstall the detector
on the sight pipe.
C7961F (Fig. 13)
1. Open the master switch and remove the detector from
the sight pipe (see appropriate section).
2. Unscrew the four hex-head bolts holding the seal-off
flange to the faceplate and remove the flange. Put the
bolts in a safe place.
3. Unscrew the retaining ring (with its rubber O-ring seal)
from the seal-off flange.
4. Tip the flange and let the viewing window fall into your
hand.
5. Insert either side of the new 122037 Quartz Viewing
Window into the window aperture.
6. Screw the retaining ring (with O-ring seal) into the
seal-off flange and tighten securely.
7. Clean the viewing window on both sides with a clean
cloth placed over the eraser end of a pencil.
8. Put the seal-off flange back into place on the faceplate
and securely tighten the four hex-head bolts.
9. Reinstall the detector on the sight pipe.
Fig. 13. Replacing quartz viewing window on C7961F.
HEX-HEAD BOLT (4)
SEAL-OFF FLANGE
FACEPLATE
WINDOW
APERTURE
122037 QUARTZ
VIEWING WINDOW (100 PSI)
RETAINING RING
SEAL (RUBBER O-RING)
RETAINING RING
BODY
M1960A
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