2-47. DRYER UV SCANNER AND FLAME SAFEGUARD ASSEMBLY
This task covers:
General Safety Instructions
General Mechanics Tool Set
High voltage is present on this equipment.
Do not perform maintenance with power on.
MOS 63J (1)
Death or serious injury may result.
Scanner parts as needed.
TM 10-3510-209-10, Tarp assembly removed.
TM 10-3510-209-10, Dryer bin removed.
(Item 12, App C)
Wiping cloths (Item 3, App C)
Inspect UV scanner and flame safeguard assembly for broken, missing, or damaged wires and connectors.
The ultra violet scanner and flame safeguard assembly is a fail-safe item that
protects against excessive fuel build-up when a flame-out or ignition failure
problem exists. The fuel solenoid and pump is automatically shut down if the
scanner doesn't see a flame after a maximum of 20 seconds during a regular start
cycle. The blower will continue to run for 30 seconds to purge fumes from the
Operate dryer for a warm-up period of 5 minutes.
Close fuel valve. Pump and solenoid should shut down approximately 20 seconds after the fuel valve is closed.