Honeywell Purple Peeper C7012A Instructions Manual page 17

WHITE
WIRES
COIL
FLEXIBLE
SHUTTER
BASE OF 190971B OR D
COIL AND SHUTTER ASSEMBLY
Fig. 22. Replacing coil and shutter assembly on C7012E,F.
Replacing Quartz Viewing Window
(or Focusing Lens)
IMPORTANT
Use quartz window or lens. Ordinary glass absorbs or
filters out ultraviolet radiation.
C7012A,E,G (Fig. 22)
1. Open the master switch; remove the detector from
the sight pipe and remove the detector cover. (See
appropriate sections.)
2. Remove the ultraviolet sensing tube (steps 1 through 5
of Replacing the Ultraviolet Sensing Tube section).
3. Loosen the three screws holding the back section
of the mounting flange to the faceplate. Carefully remove
and keep together the three screws, the gray asbestos-
neoprene gasket, the red rubber washer,
and the back section of the mounting flange.
NOTE: If the viewing window (with its rubber mounting
gaskets) is stuck to the mounting flange, skip step 4.
IMPORTANT
On a C7012E, be very careful not to kink or otherwise
damage the flexible shutter.
4. Using the eraser end of a pencil, push out the viewing
window (with its rubber mounting gaskets) from the
inside of the faceplate.
C7012A,C,E,F,G SOLID STATE PURPLE PEEPER® ULTRAVIOLET FLAME DETECTORS
CRIMPED CONNECTORS
MOUNTING
SCREWS (3)
M6820
17
5. Insert one rubber mounting gasket into the window aper-
ture on the faceplate.
6. Insert the new quartz viewing window (or focusing
lens) into the window aperture with either side toward the
flame.
7. Insert two rubber mounting gaskets (only one gasket
when replacing a focusing lens) into the aperture.
8. Put the back section of the mounting flange, rubber
washer, and fiber-neoprene gasket into place on the
faceplate, and securely tighten the three mounting
screws.
NOTE: Make sure the red rubber washer between the
gray asbestos-neoprene gasket and the back section
of the mounting flange does not protrude over
the window aperture or otherwise obscure the l
line-of-sight of the detector.
FACEPLATE
114372 (20 PSI) OR 122748 (50 PSI)
QUARTZ VIEWING WINDOW (OR 124204
QUARTZ FOCUSING LENS, 20 PSI)
RED RUBBER WASHER
(BETWEEN
GASKET AND
FLANGE)
MOUNTING
120739 FIBER-NEOPRENE GASKET
SCREWS (3)
1 VIEWING WINDOW CAN BE REPLACED WITH EITHER SIDE TOWARD
THE FLAME.
ONLY ONE GASKET ON EACH SIDE OF THE FOCUSING LENS.
2
Fig. 23. Replacing quartz viewing window
or focusing lens on C7012A,E,G.
9. Clean the viewing window (or focusing lens) on both
sides using a clean cloth placed over the eraser end of a
pencil.
10. Reinstall the sensing tube (steps 6 through 9 of
Replacing Ultraviolet Sensing Tube section).
11. Replace the detector cover and reinstall the detector on
the sight pipe.
PENCIL
1
WINDOW
114465 RUBBER
APERTURE
MOUNTING
2
GASKETS (3)
BACK SECTION OF
MOUNTING FLANGE
M20033
60-2398-17