TM 10--3510--221--24
0070 00--1
BURNER BLOWER OVERLOAD
0070 00
THIS WORK PACKAGE COVERS:
Troubleshooting Burner Blower Overload Fault
INITIAL SETUP:
Maintenance Level
Materials/Parts
Unit
Tools and Special Tools
Equipment Conditions
Tool Kit, General Mechanics (Item 1, WP 0272 00)
Power must be applied at main control
Multimeter (Item 2, WP 0272 00)
enclosure (WP 0010 00).
1. Use maintenance menu to test heating system (WP 0010 00). Observe burner blower operation.
Does burner blower come on?
YES Return to normal operation.
NO Go to step 2.
2. Position SW2 then SW1 to OFF.
3. Open door on heater control enclosure.
4. Check overload relay for burner blower.
Is lever tripped?
YES Go to step 5.
NO Go to step 12.
5. Check trip setting on overload relay.
Is setting >8.8 amps?
YES Go to step 6.
NO Set trip setting to 8.8 amps. Reset trip lever. Return to step 1.
6. Reset trip lever.
7. Position SW1 then SW2 to ON.
8. Use maintenance menu to test heating system. Observe burner blower operation.
Does burner blower operate?
YES Return to normal operation.
NO Go to step 9.
9. Position SW2 then SW1 to OFF.
10. Remove blower shroud cover and check for smooth rotation of fan on burner blower.
Does fan rotate freely?
YES Go to step 11.
NO Go to step 13.
