3.6 Connect the electrical supply
CAUTION
The motor is not thermally protected. You must provide external overload protection.
Branch circuit fuses must have a maximum rating of 115% of the full load current rating
given in Section 2.
3.6.1 Introduction
Connect the electrical supply to the motor as described in Section 3.6.2, 3.6.3 or 3.6.4. Connect
the supply through a contactor which incorporates a circuit breaker suitable for the full load
current ratings given in Section 2.
3.6.2 Connect to ESDP12 pumps
1. Refer to Figure 1. Undo and remove the screws which secure the cover to the motor
terminal-box (6), then remove the cover.
2. Refer to Figure 9. Check your electrical supply voltage and frequency. The universal motor
of the pump can be configured for ’high-voltage’ operation (200-230 V), as shown in detail
A, or for ‘low-voltage’ operation (100-115 V) as shown in detail B. The pump is supplied
configured for ’high-voltage’ operation. If necessary, reconfigure the links (1) in the
terminal-box to operate with your supply voltage.
3. Fit a suitable 20 mm cable-gland to the cable leadthrough hole. If your cable is too large to
pass through a 20 mm cable-gland, fit a 20 mm to 25 mm female thread adaptor to the cable
entry-hole, and fit a 20 mm cable-gland to the adaptor.
4. Pass the electrical supply cable through the cable-gland.
5. Connect the neutral and live wires in the cable (N, L) to the terminals as shown in detail A
or B, depending on your electrical supply voltage, then connect the earth (ground) wire in
the cable to the earth (ground) stud in the terminal-box.
6. Tighten the cable-gland.
7. Connect the wires at the other end of the cable to your electrical supply.
8. Refer to Figure 1. Refit the cover to the motor terminal-box (6) and secure with the screws
removed in Step 1.
ESDP12 and ESDP30 Scroll Pumps 15
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