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Installation
A708-01-880 Issue E
1. Refer to Figure 9. Undo and remove the four screws (1) which secure the cover (2) to the thermal snap-switch
box (3), then remove the cover.
2. Remove the plastic bag from inside the box and open the bag; this bag contains the crimp connectors and
insulators needed to connect to the snap-switches.
3. Pass a suitably rated four-core cable through the cable-gland (5).
4. Fit the crimp connectors to the ends of the four wires in the cable (4), then fit the insulators around the
connections.
5. Fit the crimp connectors on one pair of wires (11) to the spade terminals (10) of the shut-down thermal snap-
switch (9).
6. Connect the other ends of the same pair of wires:
z If using direct on-line (DOL) starting, connect the wires to the electrical overload loop of the contactor, so
that the contactor will shut down the pump when the snap-switch opens.
z If using an inverter to start the pump, connect the wires to the fault relay input on the inverter, so that the
relay will shut down the pump when the snap-switch opens.
7. Fit the crimp connectors on the remaining pair of wires (6) to the spade terminals (7) on the warning thermal
snap-switch (8).
8. Connect the other ends of the same pairs of wires to the warning circuit of the control equipment.
9. Tighten the cable-gland (5) to secure the cable in position.
10. Refit the cover (2) and secure with the four screws (1).
Figure 9 - Connect the IDX Thermal Snap-Switches
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