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水ポンプ Armstrong 4039 SeriesのPDF 据付・取扱説明書をオンラインで閲覧またはダウンロードできます。Armstrong 4039 Series 8 ページ。 Belt driven pumps
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INSTALLATION
Recommended installation arrangements are:
2.1 FOUNDATION
The foundation should be sufficiently substantial to absorb any vibration and to form a permanent rigid support for the
baseplate. This is essential in maintaining the alignment of a direct connected unit. A good foundation should weigh
approx. 2.5 times the shipping weight of the pump. In building the foundation make ample allowance for grouting.
Foundation bolts of the proper size should be arranged as shown, with a pipe sleeve embedded in the concrete to
permit adjustment of the bolts after the concrete has been poured. Use sleeves with a diameter 2.5 times the diameter
of the bolts.
Locate the pump on its foundation holes using the motor feet as a template.
Drill four holes of the required size and insert the anchors.
Take the tamping tool (supplied with the anchors) and drive home the lead
sleeve until it is below the level of the foundation and firmly fixed in the concrete.
2.2 LEVELLING
Before installing the unit, use a straight edge to check that the mounting surface is level. Place the unit on it's
foundation and insert shims under the bedplate to take up any irregularities in the concrete. On flanged pumps, check
the suction and discharge flanges for horizontal or vertical position using a straight edge and level. Tighten foundation
bolts evenly.
2.3 PIPING
Both the suction and discharge pipes should be independently supported near the pump so that no strain is imposed
on the pump when the pipes are connected. All connecting pipework should be accurately located – do not attempt
to force the suction and discharge pipes into position.
Suction Piping
Use short direct suction piping one or two times larger than the pump suction nozzle. Arrange piping to eliminate
potential air pockets and use an eccentric reducer to connect to the suction nozzle. A strainer three or four times the
area of the suction pipe will prevent foreign materials entering the pump.
Discharge Piping
A check valve and gate valve should be installed in the discharge line. If an increaser is used on the discharge side
to increase the size of the discharge pipe it should be placed between the check valve and the pump.
3.
PUMP PIPING - GENERAL
Never connect a pump to piping, unless extra care is taken to measure and align the piping flanges well. Always
start piping from pump. Use as few bends as possible and preferably long radius elbows.
Ensure the piping exerts no strain on the pump as this could distort the casing causing breakage or early failure
due to pump misalignment.
All connecting pipe flanges must be square to the pipework and parallel to the pump flanges.
Suction and discharge pipes may be increased or decreased at the pump nozzle to suit pump capacity and
particular conditions of installation. Use eccentric reducers on suction connection with flat side uppermost.
Layout the suction line with a continual rise towards the pump without high points, thus eliminating possibility of
air pockets that may prevent the pump from operating effectively.
A strainer of three or four times the area of the suction pipe, installed in the suction line, will prevent the entrance
of foreign materials into the pump. 5mm diameter perforations in the strainer is typical.
In open systems, test suction line for air leaks before starting; this becomes essential with long suction line or
static lift.
Install, at the pump suction, a straight pipe of a length equivalent to 4 or 6 times its diameter; this becomes
essential when handling liquids above 49°C (120°F). Armstrong suction guides may be used in place of the
straight pipe run and in-line strainer.
Install an isolation valve in both suction and discharge lines on flooded suction application; these valves are used
primarily to isolate the pump for inspection or repair
Install a non-slam non-return check valve in discharge line between pump and isolation valve to protect pump
from excessive back pressure and to prevent water running back through the pump in case of driver failure on
open systems. An Armstrong Flo-Trex valve may be used in place of non-return check valve and isolation valve
on pump discharge.
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