Xylem Z6 ZN6 - Manual (Page 19)

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5. Installation Information for installers
The installation operations must be carried out by qualified and experienced personnel.
Use suitable equipment and protections. Observe all the accident prevention regulations in force.
Always refer to the local and/or national regulations, legislation and codes in force relating to the selection of the installation site
and the water and power connections.
Read this operating manual and the instructions for the motor that is to be coupled to the pump before
proceeding with the installation. Keep all instructions for future reference. Take note of the operating limits
specified in section 3.1.
5.1 Selecting the electric motor
If you buy the pump without motor and couple it to a motor other than those described in our catalogue,
the safety of the unit must be guaranteed by the person making the coupling.
The power of the motor must be greater or at least equal to that required by the pump to which the motor
is to be coupled. If you use a motor other than a standard one, make sure that the axial thrust tolerated by
the motor is greater than the maximum axial thrust generated by the pump.
Please contact our Sales and Service Department for additional information.
5.2
Selecting the electric control panel
The motors must be suitably protected against overload and short circuits.
Always refer to the motor manual and the instructions provided with the electrical panel.
Avoid the possibility of dry running, i.e. the pump must not run without water inside it. Make sure that the
electric panel is equipped with a dry running protection system.
6. Start-up Information for installers
Read this operating manual and the instructions for the motor that is to be coupled to the pump before
start-up. Keep all instructions for future reference.
If the product bears visible signs of damage, do not proceed with installation; contact our Sales and Service Department.
6.1 Motor-pump coupling
If the pump is not coupled to the motor, assemble the unit as follows:
1 Position the motor securely in the vertical position.
2 Make sure the motor shaft rotates freely.
3 Make sure that the pump shaft rotates freely; be careful not to damage the coupling groove.
4 Remove the cable guard from the pump after unscrewing the fastening screws.
5 Clean the coupling surfaces on the motor and the pump.
6 Lift the pump over the motor and align them on the same axis. The motor studs must be aligned with the corresponding
holes on the motor support, and the motor cable outlets must be aligned with the corresponding seats found on the lower
support of the pump.
7 Lower the pump slowly until it completely engages the grooved shaft of the motor in the coupling. If necessary, rotate the
coupling slightly to facilitate the operation.
8 Tighten the fastening nuts and washers diagonally and in a uniform manner (for additional information refer to the motor
instructions). For information on torque, consult section 10.5.
9 Secure the cable guard to the pump, passing the motor cable under the guard.
6.2
Splicing the motor cable to the drop cable
If necessary, splice the two cables using the heat-shrink or resin-filled method, or other suitable system.
Always refer to the instructions for the couplings.
After splicing the cables, check the electrical continuity of the phase wires and the ground cable.
6.3
Water connection
Screw the delivery pipe into the electric pump outlet, holding it by the head. The threaded section of the pipe must not be longer
than the threading on the pump. The pipe must be screwed in tight to prevent its coming loose as a result of repeated pump
starting and stopping. There are one or more dowels on the delivery port which, if screwed into the pipe, will help prevent its
coming loose.
For safety reasons, if you are using plastic or flexible piping, secure the electric pump by means of a loose
stainless steel cable, passing it through the safety hooks provided on the head.
There is a non-return valve in the head of the pump. An additional non-return valve should be installed in the delivery pipe to reduce
water hammer, especially if the delivery pipe is long.
Secure the electric cable to the pipe by means of clamps placed at 2 or 3 meters intervals.
For more information refer to the diagram in section 10.4.
WARNING
WARNING