7. ELECTRICAL CONNECTIONS
WARNING - THIS PUMP MUST BE EARTHED
Electrical hazard will result if the pump is not correctly earthed.
If in doubt - consult a qualified electrician or call your local electricity board engineer.
The pump must be connected to a 230 volt 50Hz supply with a switched spur fused of
5A (10A on model BP130D). The switch must have a double pole disconnection with a
separation gap of at least 3mm. See Fig 1. Connect as the following colour code:
Connect BROWN to terminal L (Live)
Connect YELLOW/GREEN to terminal E (Earth)
Connect BLUE to terminal N (Neutral)
Insert wire fully into terminal connector and screw down firmly – ensure connection is
secure. Be sure to tighten cable restraint.
Ensure compliance with I.E.E. regulations. In the interests of safety it is recommended that
a residual current device (RCD) be installed in the supply circuit.
To avoid electrical hazard do not operate pump without terminal cover in place.
The mains on indicator light (where fitted) must not be relied on as a disconnect safety
check. The light may be faulty. Always switch off before removing terminal box cover.
For normal operation of the system the pump switch should be left on at all times.
Copper pipes should have supplementary earth bonding. Where the earth continuity has
been broken by flexible pipes the pump discharge and suction pipework should be
connected with earthing clamps to BS951 and 4mm earthing wire.
Power Cord Replacement
This operation should be carried out by a competent person.
If the power cord needs replacement, it is important to use the correct cable and fit it in
the correct manner.
The cable should be 3 core 0.75mm
2
. H05V V-F.
The pump connection end should be made as the diagram below.
NB. The power cord is available complete from Watermill Products. Part number WS137.
To fit:
Disconnect the power supply.
Remove the terminal box lid and existing damaged
cable taking care not to lose any fixings.
Loosen the knurled nut on the cable gland.
Pass the new cable through the cable gland and its
rubber insert.
Connect the cable as follows:
Brown to the terminal marked L
Blue to the terminal marked N
Yellow/Green (ring terminal) to E or
After inserting the L & N cables into their terminals tighten the screws and ensure that the
cables are secure.
Fit the ring terminal with a lock washer and nut and tighten with a suitable M4 spanner or
nut runner.
5
HO5 V-F
0.75mm BLACK
3-CORECABLE
M4 Ring
Terminal
(Earth)
PT.NO. WS137 - Cable Termination
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