Watson-Marlow 520DuN IP66/NEMA 4X User Manual
18
10 Connecting this product
to a power supply
The voltage selector is mounted in the switchplate at
the rear of the pump, protected from water by the
520N module. The module must be removed to allow
access to the switchplate. See 22.1
520N module fit-
ting.
Set the voltage selector to 115V for 100-120V
50/60Hz supplies or 230V for 200-240V 50/60Hz
supplies. Always check the voltage selector switch
before connecting the mains supply.
Make suitable connection to an earthed single-phase
mains electricity supply.
The voltage selector switch is not visible while the 520N
module is in place. Do not swith the pump on unless
you have checked that it is set to suit your power sup-
ply by removing the module and inspecting the switch,
and then refitting the module. See 22.1
520N module fitting.
We recommend using commercially available supply
voltage surge suppression where there is excessive
electrical noise.
Power cable
: The pump is supplied fitted
with a cable gland and approximately
2.8m of power cable. Recommended
cable: H05RN-F3G0.75; SJTW 105C 3-
18AWG; max OD 8mm (5/16in).
This drawing shows the cable connections
from below with the interface card cover
removed.
Power cables of NEMA 4X specification
pumps are fitted with a standard US
mains power plug. IP66 specification
pumps are supplied with no plug. The
colour code for the power cable is: brown
- live; blue - neutral; green and yellow -
earth.
