DECCAN DOUBLE STAGE JET PUMP User manual

Installation & Operation Manual
DOUBLE STAGE JET PUMP
WITHOUT CONTROL VALVE
The Jet Pump consists of monobloc and a jet unit which operate
in combination to pump water from deep wells. Water is forced
under pressure through a nozzle and a venture. The water
surrounding the nozzle area is trapped along with the high speed
stream and in this wway water is pumped out. Therefore two
pipes are required to be inserted into the well. One for injecting
water into the jet and the another one for bringing the water out of
the jet.
BRIEF DESCRIPTION OF THE DECCAN JET PUMP
CHECKS TO BE MADE BEFORE INSTALLATION
1) The diameter of the bore well should be checked before
lowering the jet unit and pipes into the bore well. This check will
ensure that the jet unit does not get stuck in the bore at any point.
The check is carried out using a disc whose diameter is equal to
the maximum diameter of the jet unit.
2) Measurements are also to be made of the following quantities :
a) Depth of the well from ground level.
b) Yield of borewell. This is a measure of the maximum amount
of water that can continuously be drawn from the well while
maintaining a stable water level. Borewell operators can
measure the quantity by a compressor test.
c) Lowest water level in summer. The water level will go down
and therefore this should be taken into account.
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INSTALLATION OF JET PUMP (HORIZONTAL)
INSTALLATION OF JET PUMP (VERTICAL)
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OPERATION
1) PRIMING :
When the pump is started for the first time it is to be primed (i.e.
the pump is to be filled with water). This can be accomplished
using the T fitting as shown in figure. The air-cock is opened.
Water is poured until there is a free flow from the air - cock. Then
the air-cock is closed gradually while water is being poured. If
after closing the air-cock water level in the fitting falls, this
indicates there is a leak and mechanic should be consulted.
2) CAUTION :
Pumped water must not contain sand or grit. In a new borewell
there will be sand, mud, grit, etc. as a result of the drilling of the
borewell. While starting for the first time, the pump is not to be
stopped until clear water flows ie. It must not be switched off while
pumping sandy water.
1) The Jet monobloc should be installed in a clean, dry location
with proper ventilation. Do not install in open air without sufficient
covering.
2) The Monobloc can be installed either over a well or away from
it. The Pipe leading from the Monobloc to the well must slope
down from the Monobloc to the well.
3) Only new pipes and fittings are to be used. Old pipes contain
lose scale and dirt. This will block the nozzle and put the pump
out of order.
4) The Jet unit should be located around 3 metres (10 ft) below the
lowest water level in the well.
5) Equipment required (refer the list of materials)
6) The foot valve is to be checked by filling it with water and
allowing the water to stand for 30 minutes; if the foot valve is
faulty the water level will decrease due to leakage. The dealer is
to be contacted immediately for replacement or rectification.
7) If the use of old pipes is unavoidable, the dirt and scale in them
is to be removed by keeping them vertically and hitting them with
a hammer.
8) At every joint threading compound is to be applied to ensure a
leak-proof joint.
Note : The Jet Pump will not function even if there is a slight leak
in the suction pipe.
9) Before the installation of the last two lengths the horizontal pipe
which are to be connected to the Monobloc flanges one should
ensure that their ends are level. This will result in a better fit.
10) The horizontal pressure pipe is to be connected between the
elbow and flange using a slope as shown in figure 1
11) A gasket is to be provided between flange and pump and the
flange nuts are to be tightened well to prevent leakage.
12) For ease in priming the pump at fitting is to be connected on the
delivery side as shown in figure. The T fitting should be located
between the pump and gate valve.
INSTALLATION
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EKKI PUMPS DECCAN PUMPS PRIVATE LIMITED
EKKI GROUP
www.ekkigroup.com
Chennai : [phone], 760
Bengaluru : [phone]
Cochin : [phone]
Secunderabad : [phone]
Pune : [phone]
Nagpur : [phone]
Branch Office :
43, E3-E6, Bharathi Nagar, Sathy Road, Ganapathy,
Coimbatore - 641006, Tamilnadu, INDIA.
Ph : +91 422 - 2533544, 2533534
LIST OF MATERIALS REQUIRED FOR JET PUMPS
Essential Items :
1) Motor - Pump unit, Jet assembly and Foot valve
2) Starter - Main switch fuse and cable
3) Main pipe and pressure pipe in GI/PVC of required size,
thickness and length with couplings, bends
Alternatively
Main pipe and pressure pipe in HDP / Flexible material of required
size, thickness and length with 4 nos. metallic hose collars and clips.
(2 nos. for main pipe and 2 nos. for pressure pipe). 2 nos of 250 mm
length GI Pipe with coupling of main pipe’s size and 2 nos of 200
mm length GI pipe with coupling of pressure pipe’s size.
4) 25 mm G.I. Pipe 200 mm length 4 nos.
5) 25 mm G.I.T - 1 no.
6) 25 mm Gate Valve - 2 nos
7) Clamps - 2 Pairs (1 pair for main pipe and 1 for pressure pipe)
1) Tripod with pulley block or equivalent equipment
2) Pipe wrenches - 2 nos
3) Cutting player, screw driver, hammer, chisel indicator and
spanners
4) Thread, locking paste/PTFE tape, Emery cloth
5) Clip on meter, Multi meter, Meggar (500 V)
TOOLS AND INSTRUMENTS :
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