3-22. WATER HEATER UV SCANNER AND FLAME SAFEGUARD ASSEMBLY
This task covers:
General Safety Instructions
General mechanic's tool set
High voltage is present on this equipment.
MOS 63J (1)
Do not perform maintenance with power on.
Death or serious injury may result.
TM-10-3510-209-10, Tarp assembly removed.
(Item 3, App C)
High voltage is present on this
equipment. Use extreme caution
when performing the following test
with power ON. Death or serious
injury may result.
Turn on fuel and power.
Wait approximately 20 seconds. If audible alarm
sounds, go to step 10. If blower motor does not
come on and ignition does not occur, go to next
Open water heater control box lid (1) and check
motor contactors (2). If contactors are tripped,
reset contactors and check for normal operation.
If contactors continue to trip, test motor
contactor operation (step 5). If contactors are
not tripped, go to step 6.