Grundfos BMQE 15, Product Manual

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Suction Lift:
High pressure water from the drive pipe passes through the venturi and pulls
water from the well into the ejector, and then pushes it up to the pump. This
allows us to push water up to the pump from depths greater than 25 feet, or
to boost the output from a shallow well pump to higher pressures.
Handbook
Applications
DRIVE
PIPE
SUCTION
PIPE
VENTURI
NOZZLE
INLET
Rain Water Harvesting:
Reduce, reuse, and recycle. The Three R’s of conservation. Rain water harvesting is the way to store rain water for future
use such as the watering of a garden. Simply collect rain water from the roof of your home through the eves into a storage
container. Use the MQ to pull a suction lift ,using a non collapsible suction line, from the storage container to water your
garden.
Pump Selections:
EZ Boost: Constant Pressure at the touch of a button.
The EZ Boost uses the time tested technology used in the SQE constant pressure system (submersible application). The
MSE 3 motors are based on solid state electronics and permanent magnet rotors which account for high motor efficiencies.
Variable speed is offered though frequency control via the CU301 remote status box. The System can be set to operate at
any duty point in the range between minimum and maximum performance of the pump. The EZ Boost has built in safeties
in the solid state electronics. The small footprint of the pump allows the system to be positioned either vertically or horizon-
tally depending on the needs of the application. Refer to the EZ Boost installation video on our web site www.grundfos.us
MQ: Maximum Quality Flow Based Pressure Boosting System:
The MQ is a complete, all-in-one unit, incorporating pump, motor, diaphragm tank, pressure and flow sensor, controller and
check valve. Built in safeties ensure long life of the pump. These safeties include: dry running; excessive temperature; any
overload conditions. The MQ is a self priming pump and needs no priming other than that at installation. The MQ is a plug-
n-play system.
Basic Line: Durable and dependable Basic Line Jets.
Grundfos offers shallow well, deep well, and convertible jet pumps. Our jets are self-priming centrifugal pumps suitable for
domestic water supply, light agriculture, and industrial water transfer applications. Three models include: JPS; JPF; JDF. The
JPS are shallow well jets with built-in ejectors. The JPF are convertible jets with detachable ejector assembly for deep well
applications. The JDF are deep well jets with separate deep well port for connection to Deep Well ejector kits.
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Handbook
Accessories
Pressure Tanks:
Tanks are provided with the EZ Boost and MQ systems. The EZ Boost has an external tank and the MQ an internal tank. The
Basic Line however may need a tank depending on your application. In order to minimize the number of pump starts and
stops in the water supply system, and to reduce problems with water hammer in the pipe work, a pressure tank should be
installed.
Pressure Switches:
Pressure switches are used to control pump operation. These switches have a cut-in pressure and a cut-out pressure to turn
the pump on and off respectfully. The EZ Boost comes with a pressure transducer for constant pressure. The MQ has a built-
in pressure switch. Basic Line Jets have the pressure switch attached.
Valves:
Check valves: The EZ Boost and MQ systems have built-in check valves. When doing a suction lift with the MQ a check
valve is required at the inlet. This check valve is provided with every MQ.
Foot Valves:
When pulling a suction lift (shallow or deep well) with the Basic Line a foot valve is required. This valve
is installed at the end of the suction pipe to prevent back flow. The MQ will also benefit from the use of a foot valve
when doing suction lifts.
Shut off valves:
Use shut off valves in the piping system in such a way to make it possible to drain only the part of the
system that needs attention or repair.
Flow control valves: Used in applications where a set amount of flow (gallons per minute) are required. An example
of this would be a shower head or an irrigation system.
Pressure reducing valves:
Used in applications where the incoming water pressure exceeds the maximum inlet pres-
sure of the pump as is the case with the MQ and city water pressure. The Pressure Reducing Valve or PRV is used inline
after the city water tap and before the pump to ensure a set pressure.
Pressure relief valves:
This valve is a spring controlled devise that can be adjusted to meet the needs of the pumping
system. Used in applications where high pressure can result in damage to accessories such as tanks where there are
maximum pressure ratings.
Theory:
Matching consumption and pump capacity:
Selecting the right pump is a matter of matching water consumption with pump capacity. Installing an under or
oversized pump should be avoided. Consumption varies greatly depending on housing standards and lifestyle. Garden
watering in the summer can increase consumption.
Pump Selection:
Pump selection is based on the water demand and the system head. The water demand depends on the number of
consumers connected to the system. Head can either be expressed in feet or PSI. Head refers to static head, pressure
head, and friction head. For assistance in Pump Selection refer to the WebCAPS selection program found on the
Grundfos web site.
Piping:
In any water supply system, the sizing and choice of materials of the pipe work has an impact on the choice of pumps
and on the cost. Piping takes into account the system head as referred to in Pump Selection. Static head is the distance
from the ground water level to the uppermost tap. Pressure head is the system pressure the customer wants to achieve.
In most residential application this pressure is approximately 60PSI. Friction head depends on the pipe size, type and
length. When calculating friction loss always remember to allow for deterioration in the piping schematic as all water
pipes will eventually become coated with rust, lime deposits, etc. Flow velocity in the piping must be kept low as noise
can occur due to turbulence in elbows and valves or from water hammer. Fitting a pressure relief valve in the discharge
piping is recommended to protect the piping from over-pressure due to system malfunction.
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