! Caution : Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.Failure to do so may result in equipment failure.
! Caution: Verify proper operation after servicing. Failure to do so may result in equipment failure.
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.
CLEANING PROCEDURE / DISASSEMBLY
Figure 5-1 Burner Head (in place)
! Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.
Figure 5-2 Burner Door
IGNITION AND FLAME DETECTION SYSTEMS
Electrode and Flame Rod (CFC 500-2500)
Figure 5-3 Electrode spacing CFC 500-2500
When replacing the adjustable flame rod:
Figure 5-4 Tightening Flame Rod
To avoid proximity of the flame rod to the ignition electrodes, any rotational adjustments should be made on the side opposite the ignitor.
Figure 5-5 Flame Rod Adjustment
Figure 5-6 Rotating Flame Rod (view from inside furnace)
Pilot and UV Scanner (CFC 3300)
Maintenance of the UV scanner consists of periodic inspection and cleaning. To inspect, unscrew the UV flame detector from the bracket.
Source: Cleaver Brooks