Section 5 — Service and Maintenance
5-2 Part No. 750-363
On an annual basis the boiler vessel and burner combustion system must be checked and cleaned. This
work is to be carried out by an authorized Cleaver-Brooks Service Technician.
5.1 DISASSEMBLY FOR INSPECTION
1. Close off the gas supply to the boiler and disconnect electrical power at the primary switch box.
2. Remove the front upper and front left side casing panels.
3. Remove the gas train and set aside.
4. Disconnect the electrical connections to the blower assembly.
5. Disconnect scanner, ignition, and pilot cables.
6. Remove air filter (or direct vent coupling if supplied).
7. Remove the vent section between the flue collection chamber and the casing roof.
8. Remove the nuts securing the blower to the adapter plate.
9. The blower will swing out and to the left on its hinge.
10. The burner head can be separated by removing the nuts and washers holding the adapter plate to the dry
oven.
Check the burner head for any damage, burn marks or
perforations. If damage is found replace the damaged parts.
If the canister is in good condition clean out any dirt and
contaminates with a vacuum cleaner inside and out,
alternating with compressed air to dislodge any debris.
With the burner head and blower removed the combustion
chamber can be accessed for all service requirements.
Check ignition electrodes for deposits and proper gap. Clean
or replace as needed.
Inspect the pressure vessel and combustion chamber area for any damage or contamination. If dirt or
contaminates are found it is recommended that the tubes be washed with a high-pressure power washer.
!
Caution
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous
operation. Verify proper operation after servicing.
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