© 2023 Carrier 76
Inspect neatness of wiring in junction boxes and cabinets. It is best to have connections short
and direct and not having wires bunched up and tied off. Also, connections should be
periodically inspected for tightness and corrosion.
Type 48PT2 Infrared and Type UV1A, UV2, 45UV5 Ultra-violet Scanners
The viewing area of the scanner must be kept clean. Even a small amount of contamination will
reduce the flame signal reaching the detector by a measurable amount. Wipe the viewing area
routinely using a soft cloth dampened with concentrated detergent.
— Type 48PT2 Scanners include a replaceable #4-263-1 Firetron cell.
— Type 45UV5 Scanners include a replaceable #4-314-1 UV tube.
Type 69ND1 Flame Rod
The flame rod and its insulator should be kept clean by washing routinely with soap and
water. Rods should be routinely replaced as they oxidize.
Flame Signal Strength
Routine observation of the flame signal strength will forewarn any deterioration in the
capability of the flame detector or its application.
Contacts
There are no accessible contacts in the BurnerLogix. Where contacts are used, their design
assures long trouble-free life when the load circuits are maintained within the published load
ratings.
Humidity
In areas of high humidity, the control chassis should be removed and placed in a dry
atmosphere when the system is expected to be out of service for an extended period.
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 interlocks 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.
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