Honeywell C7061A Product Data page 12

C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR
Replacing Quartz Viewing Window
(or Focusing Lens)
C7061A (Fig. 14)
IMPORTANT
Use quartz window or lens. Ordinary glass absorbs
or filters out ultraviolet radiation.
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 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
fiber-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
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.
5. Insert one rubber mounting gasket into the window
aperture in 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, red rubber
washer, and fiber-neoprene gasket in place on the
faceplate, and securely tighten the three mounting
screws.
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 detector
line-of-sight.
9. Clean both sides of the viewing window (or focusing
lens) using a clean cloth placed over the eraser end
of a pencil.
10. Reinstall the sensing tube (steps F through I of
Replacing Ultraviolet Sensing Tube section).
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
11. Replace the detector cover and reinstall the detector
on the sight pipe.
C7061F (Fig. 15)
Open the master switch and remove the detector from the
sight pipe (see appropriate section).
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.
Unscrew the retaining ring (with its rubber O-ring seal) from
the seal-off flange.
Tip the flange and let the viewing window fall into your hand.
Insert either side of the new 122037 Quartz Viewing Window
into the window aperture.
Screw the retaining ring (with O-ring seal) into the seal-off
flange and tighten securely.
Clean the viewing window on both sides with a clean cloth
placed over the eraser end of a pencil.
Put the seal-off flange back into place on the faceplate and
securely tighten the four hex-head bolts.
Reinstall the detector on the sight pipe.
WINDOW
APERTURE
122037 QUARTZ
VIEWING WINDOW (100 PSI)
RETAINING RING
SEAL (RUBBER O-RING)
Fig. 15. Replacing quartz viewing window on C7061F.
® U.S. Registered Trademark
© 2011 Honeywell International Inc.
65-0223—07 M.S. Rev. 06-11
Printed in U.S.A.
HEX-HEAD BOLT (4)
SEAL-OFF FLANGE
FACEPLATE
RETAINING RING
BODY
M1960