Nxt To Nxt2 Controller Upgrade - Pentair FLECK 2750 NXT Installer Manual

Installer manual Fleck 2750 NXT/NXT2 - Maintenance
9.4.3

NXT to NXT2 controller upgrade

Mandatory
As NXT2 controller functions only with DC motors, in case of NXT to NXT2 controller
upgrade, the AC motor must be changed for a DC motor !
1. Using a flat screwdriver, unscrew (1) and open the cover (2).
2. Using a Philips screwdriver, unscrew (3) and open the NXT controller (4).
3. Disconnect the NXT controller (4).
4. Remove the pin (12), the O-ring (11) ant the NXT controller (4).
5. Remove the cams and micro-switches, see Cams replacement [
switches replacement [
6. Using pliers, remove the connecting pin (5).
7. Using a 19 mm wrench, unscrew the brine valve nut (9).
8. Using a flat screwdriver or a 11 mm wrench, unscrew (10) and remove the AC motor
assembly (7) and the back plate (8) from valve body (6).
9. Fit in place the new back plate (8) and the new DC motor assembly (13) on the body valve (6).
10. Using a flat screwdriver or a 11 mm wrench, screw (10) to fix the new DC motor assembly
(13).
11. Using a 19 mm wrench, screw the brine valve nut (9).
12. Using pliers, fit in place the connecting pin (5).
13. Remount the cams and micro-switches, see Cams replacement [
switches replacement [
14. Using the pin (12) and the O-ring (11), fix the NXT2 controller holder (14) on the back plate (8).
15. Connect the NXT2 controller (15), see NXT2 controller connections [
16. Clip the NXT2 controller (15) in the controller holder (14).
17. Close the NXT2 controller (15).
18. Close the cover (2), and using a flat screwdriver, screw (1).
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Ref. MKT-IM-026 / C - 15.12.2020