Xylem TVS - Manual (Page 38)

Installation, Operating and Maintenance Instruction
Model TVS
page 30
Remove any transport safety devices from the
pump and motor.
If the motor is only suitable for one direction of
rotation check before installation that its direction
of rotation corresponds to that of the pump. On
the pump the direction of rotation is shown by a
direction of rotation arrow, on the motor by an
identification letter in the type designation (R =
direction of rotation right, L = direction of rotation
left in an anti-clockwise direction looking at the
motor end or the pump pressure supports) insofar
as the motor is only approved for one direction of
rotation. This designation does not apply to motors
for both directions of rotation.
Check shaft ends or coupling as well as centering
and clean if necessary. Grease with lubricant.
Place the pump on the vertically positioned motor
and slide the coupling over the shaft. If necessary
turn the pump coupling slightly so that the cog
parts can fit together. Motors with more than 10''
have a smooth motor end with a feather key.
Tighten the suction casing of the pump with the
four screws or nuts and secure against loosening
(see chapter "Screw torque").
Check if the pump casing's supporting plate is still
well set on the motor flange after screwing.
Check whether the pump shaft or pump coupling
is still standing with no axial play on the motor
shaft. Axially raise pump shaft and coupling in the
direction of the pump and watch whether the shaft
sinks back to the starting position.
If there are any radial safety screws on the
coupling tighten and secure them.
Check whether the shaft can be rotated evenly.
Mount suction filter and cables including protective
covering sheet.
With units which are delivered completely mounted we
recommend that you take off the suction filter before
installation and check whether the shaft can be rotated
evenly. Take off any transport safety devices first.
Screw torque
Screw Size
Screw torque in Nm
(Dry threads)
½-20UNF-2B 60
M12 60
M16 150
M20 200
4.5 Voltage and Frequency
Mains voltage and frequency must be compared with
the values on the rating plate and must correspond.
4.6 Cables
Inspect the whole length of the cable and the cable
connections for possible damage before installation.
Repair faulty spots with shrink down plastic tubing or
cast resin sleeves and then test the insulation
resistance.
Protect the open cable ends from damp and
dirt.
If the cable needs to be extended this must be
done water tight in the well area by means of
shrink down plastic tubing or cast resin sleeves.
Other connections are only permitted in the well
above the highest water level and are to be
avoided if at all possible.
4.7 Measuring insulation value
The insulation value of the winding must be checked
before installation. For more details see the Motor
Operating Instructions.
4.8 Motor Filling
Pay attention to the Motor Operating Instructions and
check whether the motor filling has to be checked,
refilled or if the motor must be newly filled.
4.9 Lowering the unit
The suspension point (P) for the lifting gear and the
support cable on the unit must be positioned so that
the unit can be lowered centrically in the well or bore
hole and that the unit will hang in exact vertical
position.
The installed unit should hang free on the pressure
line sufficiently below the deepest service water level.
A support clamp which is supported by two transverse
girders (F) in the well or on the opening of the well
pipe holds the pressure line as well as the unit and