Water Quality - EBARA 4WN Manual De Instrucciones

to installation of the pump. Damage to the pump or motor
caused by abrasive or aggressive water is not covered by
the guarantee. The water analysis parameters listed
below are intended as a guide only as various
combinations of the below items and others may act as a
corrosive fluid:
PH - 6 to 8
Total dissolved solids (PPM) - 1,000 maximum
Chlorides (PPM) - 500 maximum
Fe (PPM) - 2 maximum
C02 (PPM) - 50 maximum
O2 (PPM) - 2 minimum
EN
Sand content - 25 gr/m
WATER QUALITY: The above guide is NOT an indication
of safe drinking water. A water analysis for this urpose
should be undertaken.
2. Know the approximate replenishment rate of the bore be-
fore selecting a pump. Select a pump with a maximum of
10% less discharge than the replenishment rate of the
bore.
3. Where bores are sunk into aquifers comprising of sand or
fine gravel, it is important that they are adequately scree-
ned to prevent the ingress of these materials into the wa-
ter being pumped. It is also important that the bore is
cleaned prior to the installation of the pump, and the
pumps must not be used for "bailing" or developing the
bore.
4. In the event that the water is entering the bore from a le-
vel above the pump ("a cascading bore"), or where the
pump is installed in a large diameter bore, or in a river or
other open water sources, a shroud may be required over
the pump to ensure that all water being pumped is drawn
over the full length of the motor's surface. Minimum wa-
ter velocity past a motor for adequate cooling should be
0.08m/sec @ 20 °C water temperature.
5. To assist in protecting the integrity and quality of your
bore water supply we suggest a bore cap be fitted to the
top of your bore casing at all times. This may also assist
pump installation.
6. PREPARING FOR THE USER
6.1 COUPLING THE PUMP WITH THE MOTOR
NOTE: Before coupling the pump to the motor ensure
that pump and motor models are as specified.
For ease of transportation and to minimise potential tran-
sport damage, 4WN submersible deep well pumps are sup-
plied in component form, ie. motor and wet-end boxed sepa-
rately. For correct coupling, proceed as follows:
− Remove cable guard after removing the lock screws.
− Insert a screwdriver into the shaft end to ensure the
pump is free to rotate. Some small resistance is normal.
− Position the pump and the motor so that they are aligned
along the same axis.
− Insert the motor shaft into the pump coupling, using the
screwdriver to rotate the shaft to align the coupling to the
motor shaft.
− On each motor stud fit the four nuts which secure the
pump to the motor, tightening them a little at a time in a
diagonal sequence.
− Align the motor cable along the pump, then secure the
cable guard with the setscrews into the side of the pump.
8
maximum
3
CAUTION
BE SURE THE MOTOR kW SIZE IS EQUAL TO (OR
EXCEEDS) THE MOTOR kW REQUIRED FOR THE
PUMP.
Ensure the motor voltage & phase matches the supply
voltages & phase.
7. INSTALLATION AND DISMANTLING, TRANSPORT
AND STORAGE
WARNING!
INSTALLATION MUST BE CARRIED OUT BY A QUALIFIED
ENGINEER.
NOTE: FOR SEALING OF PIPE THREADS ONTO YOUR 4WN
SUBMERSIBLE DEEP WELL PUMP USE THREAD TAPE ONLY. DO NOT
USE PIPE SEALING COMPOUND AT ALL.
7.1. DROP PIPE
Polythene drop pipe may be used, providing the pressures
and depths indicated in the tables below are not exceeded.
For depths in excess of 120 metres, threaded steel pipe, or
suitable alternative, should be used.
Class 6 (60 metre Head) Pipe
*Max Pump Pressure
kPa PSI
0 0
140 20
280 40
415 60
Class 9 (90 metre Head) Pipe
*Max Pump Pressure
kPa PSI
0 0
140 20
280 40
415 60
Class 12 (120 metre Head) Pipe
*Max Pump Pressure
kPa PSI
0 0
140 20
280 40
415 60
*Maximum pump pressure is the highest pressure that is
available from the pump and is measured at the top of the
bore.
All pipe and fittings must be suited to the maximum
pressures available from the pump.
Max Pump Depth
Metres Feet
60 200
45 150
30 100
18 60
Max Pump Depth
Metres Feet
90 300
75 250
70 200
50 160
Max Pump Depth
Metres Feet
120 400
105 350
90 300
80 260