7. ELECTRICAL CONNECTIONS
THIS IS A LOW VOLTAGE PUMP (USE TRANSFORMER SUPPLIED). DO NOT CONNECT PUMP
DIRECTLY TO 240 VOLT. ELECTRICAL HAZARD WILL RESULT AND THE MOTOR WILL BE
IRREPARABLY DAMAGED.
The low voltage pump has added electrical protection via a safety isolating transformer Fig 1.
For installations where the pump has to be placed in the bathroom (for example under the
bath), we recommend that the safety isolating transformer is placed outside the bathroom or
shower area. DO NOT locate 230–240 volt connections, plugs or switches within the ‘wet’
area in accordance with IEE Regulations.
The low voltage leads from the transformer must be connected to the two terminals
marked ‘T’ in the terminal box. As the supply is AC – the leads can be connected to either
terminal on the pump.
The low voltage pump installation kits are supplied with 3 metres of connecting lead.
The connecting leads between the pump and the isolating transformer can be extended up to
about 15 metres. Use 1.0mm cable.
The safety isolating transformer must be connected to a 230–240 volt 50 Hz supply
with a switched spur fused at 5 amps. The switch must have a double pole disconnection
with a separation gap of at least 3mm. See Fig 1, location.
Ensure compliance with I.E.E. regulations.
Observe colour coding as follows:
Connect BROWN to terminal L (Live)
Connect BLUE to terminal N (Neutral)
For normal operation of the shower, the transformer can be left permanently switched
on – very little power is used when the pump is not running.
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.
8. BEFORE USING
DO NOT TURN ON THE ELECTRICITY SUPPLY TO THE TRANSFORMER
1. Turn on water supply. Allow system to fill.
2. Immediately inspect for any leaks.
3. Turn on shower mixer valve.
4. Without handset attached to hose – let hose hang into shower tray/bath to gain
maximum possible flow – allow to run for 5 minutes.
5. TURN ON ELECTRICITY supply to pump and repeat paragraph 4.
6. Fix handset to hose.
7. With shower pump operating, carefully inspect again for any leaks at all connections
from both hot and cold feed pipes through to mixer valve and hose connections.
Run hot water for several minutes then re-tighten all hot water connections to pump
and hoses.
8. After completing installation the whole system must be thoroughly tested – operating
both hot and cold at full flow. Then switch off, drain down and clean the filters.
9. The first few times the pump is used, the insulating varnish used on the pump motor
may give off an odour – this is perfectly normal and will diminish with use.
9. SERVICING
1. Regular cleaning and descaling of the handset/shower head is important. The most
common cause of poor shower performance is blockage of the handset or shower head. This
is more likely in hard water areas.
2. If flow from the shower is still below normal it may be necessary to clean the pump
filters. This is very common on initial installation of showers or in new houses where the
jointing compounds, tapes, flux and other debris is being flushed through the system causing
the pump filters to be blocked.
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