AERCO BMK 6000 Dual Fuel - Manual (Page 106)

Benchmark 6000 DF Installation, Operation & Maintenance Manual
CHAPTER 7 – MAINTENANCE
Page 106 of 219 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0096_0B
03/21/2014
Ph.: 800-526-0288
GF-141
Burner Assembly Inspection and Maintenance Procedures – Continued
11. Attach a hoist rig, capable of lifting 300 pounds, to the lifting lug on the blower fan housing.
12. Remove the two inlet air filters from the galvanized Y-duct.
13. Loosen and remove the eight (8) 3/8” hex nuts and washers from the Blower Flange where
it is attached to the Burner Plate (see Figure 7-4, sheets 1 & 2).
14. Remove the Blower from the Burner by pulling outward. Be careful not to allow it to swing
and damage other equipment components. Refer to the exploded view in Figure 7-5.
NOTE
The Blower assembly (including motor) weighs approximately 150–200 lbs.
depending on which blower motor is installed.
15. Lower the Blower/Air/Fuel Valve assembly down approximately 16” until it is clear of the
Burner Flange.
16. Remove the Burner by pulling it straight out.
17. Gently slide the Burner out of the boiler using care to avoid tearing the mesh burner fabric,
or cock the Burner to one side or the other.
18. Remove and replace the two (2) Burner Gaskets (see Figure 7-5).
19. To reassemble, begin with the Burner assembly and reinstall all the components in the
reverse order that they were removed. The Burner may have a nut installed at the base
position to keep the Burner level while installing the Blower (Figure 7-5).
20. Ensure that the Pilot Burner and Pilot Flame Detectors cutouts in the Blower Flange are
properly aligned with the Burner Plate.