38 Installation and maintenance instructions ecoFIT pure 0020230533_06
8. Remove the upper clip (1).
9. Remove the lower clip (3).
10. Remove the return pipe (2).
11. Remove the clip underneath the condensate tray (1).
12. Undo the four screws (2).
13. Remove the ignition electrode (1).
14. Lift the heat exchanger up slightly and remove it to-
gether with the condensate tray.
15. Remove the ignition transformer (2).
16. Install the new heat exchanger in reverse order.
13.5.4 Replacing the pump head
1. Disconnect the pump cables from the electronics box.
2. Undo the four screws
(1).
3. Remove the pump head (2).
4. Replace the O-ring.
5. Use four screws to secure the new pump head.
6. Connect the pump cables to the electronics box.
13.5.5 Replacing the expansion vessel
1. Drain the product. (→ Page 36)
2. Undo the nut (3).
3. Remove both screws on the support plate (1).
4. Remove the support plate .
5. Pull out the expansion vessel (2) towards the front.
6. Insert the new expansion vessel into the product.
7. Screw the new expansion vessel to the water connec-
tion. To do this, use a new seal.
8. Attach the support plate using both screws.
9. Fill and purge the product (→ Page 28)and, if required,
the heating installation.
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