Important Precautions - White S4A Installation And Operating Manual

DAB 4" SUBMERSIBLE PUMP INSTALLATION
AND OPERATING INSTRUCTIONS
These instructions supply the necessary information for the installation and operation of 4" submersible pumps,
and should be thoroughly read and understood before installation is attempted.
GUARANTEE
The following Guarantee conditions shall apply to borehole submersible pump installation. White International
shall not be held responsible for damage caused by improper installation, use of cable and control boxes, level
controls or magnetic starters which are not approved by White International, negligent or careless handling,
lightning, improper voltage supply, corrosion due to impure water, wear caused by sand, gravel or other
abrasives in the water being pumped.

IMPORTANT PRECAUTIONS

1. Damage to pump or motor caused by abrasive or corrosive water is not covered by the
Guarantee; however, to guard against installing a pump in aggressive water, it is suggested that an
analysis of the bore water be submitted to the Department of Agriculture prior to installation to
ensure pump suitability.
2. The bore should be clean before installation. The submersible pump must not be used to bail a
new bore. Guarantee does not cover failure or wear due to abrasives in the water.
3. Be sure voltage and frequency as shown on the nameplate of the control box and motor are the
same as the voltage and frequency on the line to which the motor is to be connected. Minimum
voltage at the motor must be 240 volts for single phase and 415 volts for three phase.
4. Do not allow pump to run single phase unless it is properly connected to the correct control box.
5. Do not allow pumps to run dry, against a closed discharge or full open discharge. Refer to table
showing minimum and maximum flow conditions.
6. In addition to the check valve built into the pump, it may be necessary to install an additional check
valve. This is mandatory for heads greater than 80 metres, or on pressure systems. This will
reduce water hammer shocks to the pump.
7. Know the total depth of the bore and ensure that the pump does not rest on the bottom or in
sand. Ensure 2 metres (6 feet) clear below the pump to the bottom of the bore.
8. Know the pumping level of the bore and ensure that the pump remains submerged at all times.
Use of level controller is recommended. If probe type is used, the probe should be located to
switch the pump off when the bore water level drops within 1 metre of the pump suction.
Alternatively a probeless control such as TESLA GUARDIAN can be used.
9. A Flow Inducer Sleeve or shroud which ensures that the water is drawn into the pump from
below the motor is required when the pump is in open water (i.e. water tank, river or dam), is in a
rock well, below casing or set in screens, or well diameter is too large.
10. Do not install borehole submersibles in a crooked bore without gauging first. Lower a gauge which
is the same diameter and length as the pump to be used into the bore. If the gauge does not bind,
it is safe to install the pump.
11. Never support the weight of the pump by the drop (power) cable or by the safety rope. Refer
instructions in section PUMP DROP PIPE.
DAB Submersible Pump Installation Instructions 2013 rev 1
2