Thermo Products CMA2-75N ユーザーズマニュアル

 
 
5.  GASKETS/SEALING MATERIALS 
Inspect all visible gaskets for signs of degradation or liquid seepage, especially 
any seals which were removed as part of the inspection. Replace any suspect 
gaskets. 

 

Inspect for corrosion, pitting, warpage, deterioration, carbon build-up and loose 
gaskets in the flue pipe, burner box and accessible areas of the heat exchanger. 
 
1.  CLEANING THE COIL AIR SIDE 

 

a.  Remove the blower from the blower compartment. In order to remove the 

blower, it will first be necessary to disconnect the furnace from the outside 
power supply and disconnect the blower wire harness from the furnace at 
the blower pan quick connect. 

 

b.  Clean the coil with a vacuum cleaner by going through the blower pan 

opening being careful not to bend or damage any of the fins. 
 

c.  Once all components are cleaned, they must be re-installed to their factory 

produced  state.  Any seals or joints in the flue system which have been 
removed or loosened must be reconnected and sealed if necessary. Do 
this in accordance with the installation instructions.  

 

gasket must be replaced. 
 

 

 

Check and clean the blower wheel,  housing and compartment with a vacuum. 
Check the motor name plate and follow the motor manufacturers instructions for 
lubrication, if required. 

 IMPORTANT:  Some motors are permanently lubricated and should not be 

oiled.  See motor name plate for specific instructions. 

 
The Return Air Filter(s): Provided with this unit is a permanent type filter. This 
filter(s) should be inspected and when dirty, cleaned or replaced, if necessary to 
assure proper furnace operation. Follow the cleaning, removal and replacement 
procedure below. 

 

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