Goulds Pumps 3311 - IOM - Manual (Page 5)

5
2 Application
2.1
Limitation of use
Operation of the pump must be limited to the application
and operating conditions stated by the purchaser and
confirmed on the manufacturer's data sheet. The pump is
covered by warranty under Gould’s Pumps’ conditions of
sale.
2.2 Wrong use
• Operate the pump only for the application stated on
the data sheet. Operation outside these limits of
product application will increase the risk to personal
safety and the environment.
CAUTION
• Do not exceed the density stated on the data sheet as
this could cause a motor overload condition.
• Do not operate the pump outside its characteristic
curve so as to avoid pump or motor damage.
2.3 Accessories
The accessories supplied with the pump are indicated on
the data sheet. Other accessories may be mounted to the
pump or the pump set only after Gould’s Pumps' prior
consent.
2.4 Design and working principle
The 3311 high pressure pump of the Goulds multi-stage
line is a horizontal multi-stage ring-section type
centrifugal pump.
It meets the technical requirements according to DIN ISO
5199 / EN 25199.
The pump casings are held together by external tie bolts
and sealed against the atmosphere by O-rings.
The axial thrust is balanced by a hydraulic balancing
device consisting of a disc/drum combination. An
additional lift-off device is available and intended for
special applications. The balancing liquid flows back
through an external line to the suction casing.
Suction nozzle: axial or radial.
In the case of radial suction nozzle orientation, the suction
casing pump feet assembly allows adaptation to the
installation requirements by rotating the casing.
Bearings:
Oil-lubricated anti-friction bearing on the discharge side;
suction side sleeve bearing lubricated by the liquid
handled or oil-lubricated anti-friction bearing.
Shaft seal:
Packed stuffing box or mechanical seal according to DIN
24960.
Drive:
Depending on its design, the pump is either driven from
the discharge side or the suction side, by a customary
electric motor or turbine. The direction of rotation is
counter-clockwise for discharge side drive, and clockwise
for suction side drive, when viewed from drive end.
2.5 Applications
- Municipal water supply:
Pumping stations, treatment plants, booster units.
- Water treatment:
Filtration, reverse osmosis.
- Pumps for industrial purposes:
General water supply, cold water, boiler feed
installations, hot water, pumping of organic and
inorganic solutions, high-pressure gas washing; power
water generation plants, purifying and cleaning plants,
desalinization plants.
- Power supply:
Small and medium-sized thermal stations, waste
incineration installations.