White S4A Installation And Operating Manual page 5

PN MAX PUMP
RATING HEAD (M) BY
CURVE
20 200
20 200
20 200
20 200
20 200
20 200
20 200
20 200
20 200
20 200
20 200
20 200
20 200
20 200
20 200
20 200
Polythene drop pipe can be selected by reference to the pump curve and its suitability can be checked on site
by checking the maximum pressure read at the top of the bore reference to the maximum depth allowed.
An unstrained safety rope must be connected to all pumps suspended on polythene pipe. This line should be
fastened to the lifting hook of the pump. The other end should be fastened at the top of the bore casing or
bore cap. The safety rope should be affixed at three metre intervals by a suitable underwater tape with the rope
having some slackness between each interval to compensate for the expansion of the polythene pipe when
under load.
Care should be exercised to ensure that the polythene pipe is securely fastened to reliable fittings.
If galvanized steel drop pipe is used, it is best installed in three meter lengths to enable easy handling and all
threads should be treated against corrosion.
It may be necessary, as a safety precaution to install a non-return valve at the top of the bore. This is in addition
to the non-return valve fitted in the pump. This will assure a break down of the water hammer and
consequently a reduction of shocks on the hydraulic components (which occurs in any pump system)
immediately after each shutdown.
This non-return valve is mandatory where the pump heads (pressure at the top of the bore plus pump depth)
exceed 80 m (785 kPa or 262 ft) or where the pump is part of an automatic pressure system.
WIRING
Wiring should conform to the requirements of local and national electrical codes. If in any doubt, contact your
Electricity Supply Authority.
CAUTION
The use of smaller cable than specified below may cause premature motor failure and will void the warranty.
Larger sized cables may be used.
The use of old drop cable or white flat is not recommended. Use water-proof cable only, i.e,
Aquaflex AQM rated for immersion to 100 m (500m immersion rated also available) obtainable from White
International.
The tables on the next page indicate the correct size electrical drop cable and maximum lengths to be used.
DAB Submersible Pump Installation Instructions 2013 rev 1
MAX KPA MAX PSI
AT TOP AT TOP
OF BORE OF BORE
0 0
138 20
276 40
414 60
552 80
689 100
827 120
965 140
1103 160
1172 170
1241 180
1379 200
1517 220
1655 240
1793 260
1931 280
MAX MAX
DEPTH DEPTH
(M) (FT)
200 656
186 610
172 564
158 518
144 472
130 426
116 379
102 333
88 287
80 264
73 241
59 195
45 149
31 103
17 56
3 10
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