Maintenance - Cleaning21
(Cleaning Internal Components Cont'd)
2.Remove the combustion intake assembly. See Fig. 35. The combustion intake assembly is held into place with two swing latches. See Fig. 37. Swing each latch until it hangs down away from the retainer stud. Now the assembly can be taken out by tilting the right side outward first through the lower door opening.
3.The units interior is now ready to clean. Use the scraper provided to clean the heat exchanger surfaces. A wire brush or short bristled brush is an excellent cleaning tool. Clean the fan blade and combustion blower fan housing. NOTE: Be careful not to bend the fan blade while cleaning. A bent blade will throw the fan blade out of balance. See Fig. 38.
4.With the blower housing open, there is easy access to the flue pipe exiting the rear of the unit. See Fig. 38. Vacuum the flue pipe as far into the pipe as possible. NOTE: Be careful while cleaning the flue pipe not to bend the ESP probe. The ESP probe is approximately 8" in the tube and is visible when looking into the tube.
Combustion intake assembly latch
Fig. 37
Fig. 38
