Beckett CG25 Maintenance and Service, Annual Professional Service Required, Annual Maintenance

Section: Maintenance and Service

Maintenance and Service

Annual Professional

Service Required

Tampering with or making incorrect adjustments could lead to equipment malfunction and result in asphyxiation, explosion or fire.

yDo not tamper with the burner or controls or make any adjustments unless you are a trained and qualified service technician.

yTo ensure continued reliable operation, a qualified service technician must service this burner annually.

yMore frequent service intervals may be required in dusty or adverse environments.

yOperation and adjustment of the burner requires technical training and skillful use of combustion test instruments and other test equipment.

Turn Off Electric and Gas

Supply Before Servicing

Failure to turn off electric and gas supply could result in electrical shock, gas leakage, explosion, or fire hazards.

yTurn main gas valves and electric power off before performing any maintenance.

yIf a maintenance procedure requires electrical power, use extreme caution.

Annual Maintenance

(The following should be performed by a qualified service technician only.)

Burner:

1.Run the burner and perform a complete combustion test using the proper instruments before proceeding. If necessary refer to the section labeled Start the Burner. Record the results for reference.

2.Inspect and clean all dirt accumulation from the gas train, burner exterior, burner air damper, and surrounding area.

3.Remove the blower motor and clean any accumulated matter from the blower wheel and motor end bell.

4.Clean all flue passages and flue pipe. Replace corroded or damaged pipes.

5.Check wheel for damage and the hub setscrew for tightness. If the blower wheel must be removed from the motor shaft, insure that clearance

specifications are maintained (blower wheel hub to motor clearance should be .020”).

6.Clean the inside surfaces of the burner housing scroll and especially the air intake area and airflow proving switch suction tube.

7.If the blower motor does not have permanently lubricated bearings, oil the motor. Clear any debris from the air vents on the motor body.

8.Clean the ignition transformer, baseplate, and terminal bushings. Inspect the ignition leads for signs of deterioration and loose terminals.

9.If the burner flame detection is a UV scanner, inspect the mounting and clean the lens according to the component manufacturer’s recommendations.

10.Remove the gas gun assembly and clean the entire unit, paying special attention to the air diffuser and spuds.

11.Inspect the flame rod (if used) for oxidation or distortion. Clean all surfaces, set the probe position, and insure that the flame rod is securely fastened. Refer to Figures 15A, and 15B.

12.Inspect the ignition electrode for any damage. Clean all surfaces, set the proper electrode gap, and make sure it is securely fastened.

13.Clean the inside of the air tube and inspect the combustion end for any deterioration. Referring to Figure 2, check the recess dimension from refractory.

14.Inspect gas tube O-ring condition and replace if damaged. Install gas gun assembly back into the burner and use the jacking screw to tighten the gas gun securely in place. (Automotive chassis or bearing grease is suitable for o-ring lubrication.)

15.Inspect the condition of the appliance mounting plate and burner mounting flange gaskets and replace any damaged materials. See Figure 6.

16.Inspect all burner control wiring and the burner control panel for damaged insulation and loose terminals/connections.

17.Verify that the source voltage to the burner and control panel is within 10% of the burner rating as listed on the nameplate. (Figure 1)

Appliance

(Follow appliance manufacturer’s service procedures. The following steps are emphasized because they relate to burner operation)

1.Check the condition of the combustion chamber refractory, the front-plate insulation, and all gaskets and seals. Repair or replace as necessary

2.Insure that the flue passages, flue vent pipes, and chimney flues are clean and unobstructed.

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