51
Periodic Safety Check
It is recommended that a procedure be established to test the complete flame safeguard system at
least once a month,. This test should verify the proper operation of all limit switches and safety inter-
locks as well as flame failure protection and fuel safety shutoff valve tightness.
Rotation
It is recommended that control and scanner units purchased as spares be installed periodically to
ensure proper operation.
FIGURE 16.
Mounting 45UV5 Scanner
2.75”
(70)
#60-1664
1” SWIVEL MOUNT
#35-127
HEAT INSULATING NIPPLE
STANDARD MOUNTING
FOR TYPES OF SCANNERS
AIR ENTRY
(PURGE AND
COOLING)
#60-1664
1” SWIVEL MOUNT
#35-127
HEAT INSULATING NIPPLE
MOUNTING FOR HIGH TEMP. APPLICATIONS
PURGE AIR ENTRY
AIR/ENTRY
(PURGE ABD COOLING)
#35-127
HEAT INSULATING NIPPLE
1” SIGHT PIPE
(BY OTHERS)
AIR ENTRY
(PURGE AND
COOLING)
ALTERNATE STANDARD MOUNTING
(NOT ADJUSTABLE)
#60-1664
1” SWIVEL MOUNT
#35-127
HEAT INSULATING NIPPLE
MOUNTING FOR SPECIAL
APPLICATIONS — HIGH TENP.
3/8” PLUG
(BY OTHERS)
AIR/ENTRY
(PURGE AND COOLING)
#35-127
HEAT INSULATING NIPPLE
#35-127
HEAT INSULATING NIPPLE
#60-1199
SEALING WINDOW WITH QUARTZ
WINDOW. REQUIRED WHEN SCANNER
LENS IS EXPOSED TO EXCESSIVE
FURNACE OR WINDBOX PRESSURE
APERTURE
#53-121
#60-1664
1” SWIVEL MOUNT
RETAINER
#34-181
2.75”
(70)
2.75”
(70)