Bradford-White Corp MI40T Inner Door Removal Procedure, Inner Door Gasket Replacement Procedure

SERVICE PROCEDURE RG-I

Inner Door/Gasket Removal, Inspection

Replacement and Reinstallation

Inner Door Removal Procedure

Step 1. Rotate knob of the combination thermostat/gas valve to the “OFF” position.

Step 2. Remove outer jacket burner access door

Step 3. Inner Door Removal.

For White Rodgers Control, depress knob slightly and rotate clockwise to the “OFF” position.

For Robertshaw Control, rotate knob clockwise to the “OFF” position.

a)Disconnect resettable thermal switch wire leads (leading from combination thermostat/gas valve).

b)Remove (2) 1/4" hex drive screws from right side inner door.

c)Remove (2) 1/4" drive screws from flange section of inner door.

d)Remove (2) 1/4" drive screws from left side inner door.

e)Remove inner door and inspect per step 4.

Resettable Thermal Switch

Wire Connection

¼" Hex Drive Screws

Right and Left Side Inner Door.

	¼" Hex Drive Screws at
	Flange Area of Inner Door
Step 4. Fully inspect inner door gaskets for the following:
>Tears	>Other imperfections that will inhibit proper seal
>Missing Material	>Gasket adhesion to inner door
>Cracks	>Material left on combustion chamber (around opening)
>Dirt or debris

If the gasket is not effected by any of the above, gasket replacement is not required. If replacement is required,

proceed to Inner Door Gasket Replacement Procedure.

Inner Door Gasket Replacement

Procedure.

WARNING

If the information in these instructions is not

followed exactly, a fire or explosion may result causing

property damage, personal injury or death.

Step 5. After inspection of inner door as noted in step 4, completely remove gasket and adhesive residue from right and left side inner doors as needed.

Step 6. Use RTV sealant (recommended bead size 1/8") to secure the inner door gasket to the inner door sections (right & left). Refer to illustration on next page for proper application. Note the overlap configuration in the flange area of the inner door. Set the flange section first, this will help to achieve the proper over lap position.

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