C7012A,C,E,F,G SOLID STATE PURPLE PEEPER® ULTRAVIOLET FLAME DETECTORS
60-2398-17
18
C7012C or F (Fig. 23)
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 Win-
dow 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. 24. Replacing quartz viewing window on C7012C,F.
SEAL-OFF FLANGE
HEX-HEAD BOLT (4)
WINDOW
APERTURE
122037 QUARTZ
VIEWING WINDOW (100 PSI)
RETAINING RING
SEAL (RUBBER O-RING)
RETAINING RING
FACEPLATE
BODY
M1960
