© Edwards Limited 2007. All rights reserved. Page 23
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Installation
B344-21-880 Issue N
4. Pass the supply cable through the conduit adaptor supplied with the pump (see Figure 14). If conduit is not used,
fit a suitable cable restraint in place of the adaptor. We recommend that you use electrical supply cable with
insulation that will withstand a temperature of 150
o
C in case of accidental contact between the cable and the
pump.
5. Connect the live and neutral cables to the two terminals (2, 3) coupled to the nickel heater cables. Securely
connect the earth (ground) to the earth (ground) connection (5) on the terminal-box.
6. Use the remaining terminal (1) when a thermal snap-switch is fitted (see Sections 3.6.2 and 3.6.3).
7. Connect a suitable earth (ground) cable between the earth (ground) connection (5) and the cooling-fail thermal
snap-switch mounting plate (refer to Figures 1 to 4).
Figure 14 - Heater electrical connections
1. Spare terminals
2. Heater connection
3. Heater connection
4. Conduit adaptor
5. Earth (ground) connection
6. Radiation shield
7. Ceramic terminal-block
8. Nickel heater cables
9. Terminal-box
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