Inspection and Maintenance
8-12
750-368
CBEX Elite 100-1200 HP
Check the electrode setting for any cracks that might be present on the porcelain insulator. Replace the electrode
if cracking is evident since cracking can cause grounding of the ignition voltage. Inspect the tip of the electrode
for signs of pitting, combustion deposits and wear, dressing as required with a fine file.
Periodically remove the access plug from the gas pilot aspirator and clean out any accumulated lint or other for-
eign material.
Check the ignition cables for cracks in the insulation. Verify that all connections between the transformer and the
electrode are tight.
8.8.1 — Burner Removal, Sizes 900-1200
Removal of the burner assembly on the CBEX Elite
900-1200 (see Figure 8-10) requires the burner
removal kit 880-03675.
1. Partially remove the burner assembly and support
it on the burner damper stop.
2. Attach the burner removal tool to the davit arm
and to the burner damper lugs.
3. The burner assembly can now be removed.
8.9 — Motorized Gas Valve
The motorized gas valve operating mechanism con-
tains no user serviceable parts. An inoperative actu-
ator must be replaced.
8.10 — Solenoid Valves
Foreign matter between the valve seat and seat disc
can cause leakage. Valves are readily disassembled;
however, care must be used during disassembly to
be sure that internal parts are not damaged during
the removal and that reassembly is in proper order.
A low hum or buzzing will normally be audible when the coil is energized. If the valve develops a loud buzzing or
chattering noise, check for proper voltage and clean the plunger assembly and interior plunger tube thoroughly.
Do not use any oil. Be sure that the plunger tube and solenoid are tight when reassembled. Take care not to nick,
dent, or damage the plunger tube.
Be sure to turn off power to the valve in order to avoid electrical shock. Failure to follow these instructions could
result in serious injury or death.
BURNER
DAMPER STOP
BURNER
REMOVAL TOOL
FIGURE 8-10. Burner Removal 900-1200
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