Grundfos POMONA PO07, Installation And Operating Instructions Manual

Page: 6 / 104

English (GB)
6
5. Applications
POMONA pumps are designed for applications such as:
• dewatering of construction sites
• draining of stormwater
• groundwater level control
• irrigation of gardens and parks
• water supply in agriculture and horticulture
• well-tube injection
• emergency pumping - flooded areas, fire etc.
• draining of yachts and motor boats.
The pumps are suitable for both temporary and permanent
installation.
5.1 Combustion engine
6. Pumped liquids
The pumped liquid must not attack the pump materials
chemically.
pH value: 4-10.
POMONA pumps are wear-resistant and not sensitive to
contamination from mud, dirt or sand.
Solid matter up to the following particle sizes can be pumped in
the liquid without any danger of a blockage:
7. Technical data
For performance curves, see page 96 .
7.1 Inlet pressure/priming
POMONA pumps are self-priming and, once filled, continually
ready for use.
7.2 Maximum pressure
The maximum pressure (inlet pressure and pump pressure
against a closed valve) is 6 bar.
7.3 Minimum flow rate
The pump must not run against a closed discharge valve, as this
will cause an increase in temperature/formation of steam in the
pump. This may cause shaft damage, impeller erosion, short life
of bearings, stuffing boxes with packing rings or mechanical seals
due to stress or vibration.
The minimum flow rate must be at least 10 % of the maximum
flow rate stated on the pump nameplate.
Warning
The usage of pumps with electric motors for
swimming pools and garden ponds and in the area of
such items is only permitted if the installation is
carried out in accordance with local regulations.
Warning
Observe the manufacturer's instructions for petrol
and diesel engines. Information on the direction of
rotation is of particular importance. The pump rotates
clockwise when viewed from the drive shaft.
Information on air supply and the extraction of
exhaust gases is of particular importance when
installed in a closed room.
If the tank is to be emptied, drain the fuel into a
suitable container.
Caution
The pump is not suitable for continuous pumping of
abrasive materials such as river sand.
Type
Max. particle size
[mm]
POMONA PO07 3
POMONA PO23 10
POMONA PO32 20
POMONA PO42 30
Caution
If the pump is used for pumping liquid fertilisers,
pesticides, milk of lime or wood preservatives (free
from animal fat and carbolineum), the pump must be
thoroughly cleaned after use or at least once a day.
It is not permitted to pump flammable fluids, with the
exception of EL heating oils.
When pumping heating oils, the pump must be
placed in an oil-tight pan or similar to provide
protection against environmental pollution.
Description
PO
07
PO
23
PO
32
PO
42
Maximum liquid
temperature
60 °C 80 °C
Maximum ambient
temperature
40 °C
Minimum speed [min
-1
] 2500
Maximum speed [min
-1
] 7500 4500 3700 3000
Sound pressure level [dB(A)]
Electric motor
2900 min
-1
< 70 82 90 90
Combustion engine - 91 102 105
Vacuummetric suction lift
[m]
Up to 5 Up to 8
Shaft seal
Shaft seal NBR
Materials
Housing, housing
cover
EN-GJL-200 (GG20)
Bearing bracket EN-GJL-200 (GG20)
Wear plate EN-GJL-200 (GG20)
Screw plug Stainless steel
Impeller EN-GJL-200 (GG20) or G-CuSn
Connections
Suction and
discharge
connections
G 3/4
(DN 20)
G 2
(DN 50)
G 3
(DN 80)
G 4
(DN 100)
Weight with electric motor [kg]
Bare shaft pump 9 30 40 71
Base frame 13.5 46 80 220
Carrying frame - 48 - -
Weight with combustion engine [kg]
Carrying frame - 48 90.5 -
Base frame - - - 237
On trolly - - 103 280