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Piping Design and Installation
Both the suction and discharge lines should have a minimum pipe size as follows:
a) Hydrostar Mk3
• 80mm inlet and outlet
b) Hydrosteel Pump
• 80mm inlet and outlet
c) Cast Iron Pump
•150mm at the inlet and 100mm at the outlet
Piping Installation Guide
a) Use only the pump barrel unions that are supplied with Hydrostar & Hydrosteel pumps.
For CI pumps, bolts & nuts will be supplied for connection.
b) The piping must be well supported to reduce piping load on the equipment and excess
stress on the piping.
c) To reduce difficulty in priming, install suction piping without high points that can trap air. If
the circulation equipment is located more than 30m (100ft) from the water, increase the
suction piping diameter to the next size.
d) Install the piping with the least number of bends (elbows) and fittings.
e) Every new installation must be pressure tested according to local codes.
WARNING
!
Do not pressure test the pump above 35 psi. Pressure testing must be done by a trained
pool professional. Circulation equipment that is not properly tested may fail, resulting in
severe injury or property damage.
Electrical Installation
WARNING
RISK OF ELECTRIC SHOCK
This pool pump must be installed by a licensed or certified electrician or serviceman
in accordance with all applicable local codes and ordinances. Improper installation
can create electrical hazards, which could result in death, serious injury or damage to
property.
Always disconnect power to the pool pump at the circuit breaker before servicing the
pump. Failure to do so could result in death or serious injury to servicemen, pool users
or others due to electric shock.
Three Phase Connections
Three phase connections should be installed as follows:
a) Hydrostar Mk3: WYE/STAR CONNECTION for export market
DELTA CONNECTION for Aus/NZ market
b) Hydrosteel:
DELTA CONNECTION
c) Cast Iron:
DELTA CONNECTION
Check that the information on the nameplate corresponds to the power supply.
Every motor requires either a fused disconnect switch or a circuit breaker.
A separate device must be available for permanent installation so the pump can be isolated
from the mains power. A contact distance of at least 3mm per pole is required for three
phase units.
Three Phase Motors require a starter switch or magnetic starter with correctly sized overload
protection in addition to the fused disconnect switch.
Check The Rotation Of Three Phase Motors. The motor is only suitable for clockwise
operation when viewed from the motor end fan (cowl) cover.
Three phase motors could rotate in either direction. Interchanging any 2 cables on a three
phase motor will reverse the direction of rotation. To check the rotation of the motor, turn on
for approximately 1 second. If it is running in the wrong direction turn off power, interchange
the wiring and repeat the above step to check.
The installer must protect all three phases on the supply of the motor so that the pump cannot
run on 1 or 2 phases only. An external current limiting device must be installed to protect the
motor in the event of a phase drop out.
If the pump is to be used for a swimming pool situation, it is MANDATORY that an earth
circuit breaker with a rated tripping current not exceeding 30mA be installed.
Motor protection MUST be installed corresponding to the nominal current of the motor. SEE
VALUE ON RATING PLATE.
It is the RESPONSIBILITY of the user to ensure that there is adequate protection between
the motor and the power supply.
Waterco Commercial Pump
I pg 07
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