TM 10-3510-209-24
2-47. DRYER UV SCANNER AND FLAME SAFEGUARD ASSEMBLY
This task covers:
a. Inspection
b. Test
c. Removal
d. Service
e. Repair
f. Installation
Initial Setup:
Tools
General Safety Instructions
General Mechanics Tool Set
SC 5180-90
WARNING
Personnel Required
High voltage is present on this equipment.
Do not perform maintenance with power on.
MOS 63J (1)
Death or serious injury may result.
Materials/Parts
Equipment Condition:
Scanner parts as needed.
TM 10-3510-209-10, Tarp assembly removed.
Identification tags
TM 10-3510-209-10, Dryer bin removed.
(Item 12, App C)
Wiping cloths (Item 3, App C)
INSPECTION
Inspect UV scanner and flame safeguard assembly for broken, missing, or damaged wires and connectors.
TEST
NOTE
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
combustion chamber.
1.
Operate dryer for a warm-up period of 5 minutes.
2.
Close fuel valve. Pump and solenoid should shut down approximately 20 seconds after the fuel valve is closed.
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