Baxi Potterton Boiler Spécifications télécharger pdf (Page 22)

Servicing & Routine Maintenance - Page 22

4.1 Remove the White Front Case

1. Remove the two securing screws located at the base of

the white front case assembly.

2. Ease the base of the case forward approximately 50mm

and lift to release the panel from the securing hooks at

the top of the appliance.

3. Remove the case and place in a safe position away from

the immediate working area.

4.2 Remove Base Panel

1. Remove the two securing screws retaining the base

panel to the case sides.

2. Lower the front edge and push backwards to release

cover

4.3 Remove the Air Box Covers

1. Take out the six securing screws and remove the main

air box cover.

2. Remove the two screws securing the front edge of each

white case side panels. This will allow the side panels to

be sprung outwards to improve access for the following

operation.

3. Remove the four screws securing the two remaining air

box side covers and remove.

4.4 Remove the Fan Assembly

1. Disconnect the fan wiring by separating the in-line

connector.

2. Support the fan and remove the two fixing screws from

the front edge of the fan mounting plate. Lower the fan

and carefully withdraw it from the appliance. Put in a

safe place until required.

4.5 Remove the Flue Hood

1. Remove the two flexible tubes connected to the left and

right hand sides of the fluehood.

2. Slacken the screw on the left-hand rear of the flue hood

(but do not remove) and fully remove the remaining right

hand screw.

3. Lift and remove the fluehood to expose the top surface

of the heat exchanger.

4.6 Remove the Combustion Chamber Front Panel

1. Remove the two screws securing the combustion

chamber front panel.

2. Remove the panel by pulling the top edge forwards and

lifting the panel clear of the two lower retaining flanges.

Ensure the insulation remains in position. The underside

of the heat exchanger is now exposed.

4.7 To Inspect and Clean the Boiler - Fig. 14

1. Inspect the heat exchanger for any blockage. Deposits

of any material should be brushed away using a soft

brush.

Note: Do not use brushes with metallic bristles.

2. Examine internal pipe work connections and automatic

air vent for any water leaks. Rectify if necessary.

3. Examine the combustion chamber insulating material

and renew if damaged. To remove the combustion

chamber side panels undo the single screw from each

side and pull panel forward. The insulation can now be

removed from the panel. To remove the insulation from

the rear of the combustion chamber remove the two

hexagonal burner location supports and take out the two

screws from the insulation support bracket.

Remove the support and slide the insulation downwards

from behind the heat exchanger.

4. Inspect the main burner and remove any deposits with a

soft brush.

Check the electrodes for damage or deterioration.

Ensure that the spark gaps are correct to dimensions

specified in Fig. 14. Clean or renew as necessary. Do

not bend the electrodes as the insulating material may

crack.

5. Examine the fan for any mechanical damage (including

seals), check to ensure free running of the fan wheel.

Clean the wheel if necessary with a soft brush.

Note: It is essential that a good seal is made at the fan,

renew the sealing collar or fluehood sealing ring if there

are any signs of damage or deterioration.

6. Examine flue ducts and flue hood and ensure that there

is no obstruction. Re-assemble all components in

reverse order, (ensure all seals are replaced correctly).

See note above re-spare main burner seals.

During re-assembly check the air box door and side

cover seals for damage or deterioration and renew if

necessary.

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Baxi Potterton Boiler Spécifications Page 22

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