Ensure that the relay module cover is correctly secured at all times by
all four screws. Failure to do so may compromise the IP66 (NEMA 4X)
protection.
14.2
Wiring up the terminal connectors
It is the user’s responsibility to ensure the pump’s safe and reliable operation under
remote and automatic control.
Cable entry to the module is via two watertight cable glands on the module cover. These
may be fitted in place of the sealing plugs which are fitted to the side of the module cover
when the pump is shipped.
The number of glands needed depends on the number of connection cables required and
the convenience of the installer. As standard, two ½ ” cable glands are provided with the
pump.
Recommended control cable conductors for the terminal blocks: metric = 0.05-1.31 mm
2
,
USA = 30-16 AWG stranded and solid. Cable: circular. Max/min outside diameter to ensure
a seal when passed through the standard gland: 9.5 mm-12 mm.
The cable section must
be circular to ensure a seal.
For EMC protection, shielded control cable should be used. The shielding should be
terminated to any of the provided Earth connections.
Cables should have a minimum temperature rating of 85 °C.
Choose cable suitable for the intended application and environment.
More than 8 conductors per cable may be awkward to handle.
1.
Use a suitable 21 mm spanner to unscrew the
sealing plugs.
2.
Screw in the supplied ½ ” NPT cable glands
complete with new sealing washers in place
of the plug, ensuring that the retaining nut is
properly seated.
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