Modulex EXT Commercial Series Boilers User Manual
CHAPTER 8: Maintenance Schedule
OMM-0095_0H
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
131
of
144
GF-139
Phone: 800-526-0288
09/15/2017
Disassembling the Boiler for Maintenance
– Continued
Figure 8-19 Lifting Burner Assembly and Location of the Check Valve
8.11 CLEANING THE BURNER MODULE
After completing the previous section, the individual burner modules are exposed and available
to be cleaned. Follow the instructions to clean the burner modules.
Cleaning the Burner Modules
1. Carefully lift each burner module from its position. Remove both the module and the
gasket. Discard the used gasket, as each one will be replaced at reassembly.
WARNING!
The burner gaskets
MUST
be replaced at every cleaning.
2. Use only compressed air to clean the burners by blowing into the “flame” side of the
burner mesh, as shown in Figure 8-20.
Figure 8-20: Burner Module Profile Compressed Air Orientation (Step 2)
3. Visually inspect burner mesh and the spot welds at the L profile (where the mesh is
welded to the frame) for integrity. If welds are compromised or the burner mesh is
damaged, the entire burner module should be replaced.
4. Inspect the flue exhaust section, including the exhaust piping.
8.12 CLEANING THE HEAT EXCHANGER
Over time, hard combustion by-product deposits can form on the combustion chambers’ heat
exchanger elements. Routine annual maintenance may be sufficient to keep these elements
clean. However, if the by-product build-up is too great, the efficiency of the heat exchanger will
degrade and the unit’s overall efficiency will decline.
NOTE
The check valve (
1
in Fig. 7-
19) should be checked at this
time to ensure that it moves
freely and closes properly.
COMPRESSED AIR