Replacement Of Control Box - Grundfos UPE 2000 FZ Series Montage- Und Betriebsanleitung

3. Replacement of control box

Dismantling
Warning
Never make any connections in the pump control box unless
the power supply has been switched off for at least 5 minutes.
Make sure that voltage supplies from other external systems
have been switched off as well.
Always use an antistatic service kit (Grundfos ESD,
protection set prod. no. 96884939) when dismantling and
Caution
assembling the terminal box as the electronics are sensitive
to static electricity. Connect the antistatic service kit to the
connection terminal of the protective earth lead (PE terminal).
1. Check that the "Reorder No." of the new control box is identical to that of
the existing control box. See fig. 1.
2. Switch off the power supply to the pump, and make sure that it cannot be
accidentally switched on again during replacement.
3. Remove the four screws securing the control box cover. Remove the
cover. See fig. 2.
4. Before disconnecting any leads, carefully note their position.
5. Disconnect all leads from the control box.
6. Unscrew the five screws securing the printed circuit board (PCB) to the
control box bottom and remove the PCB from the control box. See fig. 4.
7. Remove the two rubber plugs. See fig. 6.
8. Remove the two screws securing the terminal box to the power head.
See fig. 5.
9. Remove the control box bottom from the power head. See fig. 6.
10. Dismantle the new control box for easy mounting. See fig. 2 and fig. 4.
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