Honeywell Burner WX0850

Monthly checklist: 1 Inspect flame-sensing devices for good condition and cleanliness

2 Check for proper inlet air/gas ratios

3 Test all the alarm systems for proper signals

4 Check ignition spark plugs and proper gap

5 Check valve motors and control valves for free, smooth action and adjustment

6 Check for proper operation of the ventilating equipment

7 Test the interlock sequence of all safety equipment, manually make each interlock fail, noting that related equipment closes or stops as specified by the manufacturer

8 Test flame monitoring control system by manually shutting off gas to burner

9 Test main fuel hand-valves for operation

The nozzle can be inspected without removing the burner from thechamber wall or entering the chamber. Perform the following: 1 Shut the burner off and manually close the main gas shut off cocks

2 Allow the chamber temperature to cool down to 250°F (121°C). 3 Disconnect the gas piping at a union or the gas inlet flange provided on the burner

CAUTION – Do not attempt to remove the rear cover by removing the inner circle bolts. Internal burner parts will be damaged

6 Remove the rear cover / nozzle assembly from the burner housing

7 To reassemble, follow this sequence in the reverse order

Note: The combustor can be inspected only by removing the burner from the chamber wall or entering the chamber;

Yearly checklist 1 Test (leak test) safety shut-off valves for tightness of closure

2 Test air pressure switch settings by checking switch movements against pressure settings and comparing with actual impulse pressure

3 Visually check ignition cable and connectors

4 Inspect impulse piping for leaks

5 Clean and inspect all the burners

6 Make sure that the following components are not damaged or distorted: – burner nozzle – spark plugs – flame sensors – flame tube or combustion block

7 If applicable, remove and clean all the orifice plates;