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3. General information
These installation and operating instructions are a
supplement to the installation and operating
instructions for the corresponding standard pumps
CR, CRI, CRN, MTR and CM. For instructions not
mentioned specifically in this manual, see the
installation and operating instructions for the
standard pump.
4. General description
Grundfos E-pumps are fitted with
frequency-controlled permanent-magnet motors for
single-phase or three-phase mains connection.
4.1 Pumps without factory-fitted sensor
The pumps have a built-in PI controller and can be
set for an external sensor enabling the control of the
following parameters:
•
constant pressure
•
constant temperature
•
constant curve
The pumps have been factory-set to constant-curve
control mode. You can change the control mode with
Grundfos GO Remote.
4.2 Pumps with factory-fitted pressure
sensor
The pumps have a built-in PI controller and are set
for a pressure sensor enabling the control of the
outlet pressure.
The pumps have been factory-set to
constant-pressure control mode. The pumps are
typically used to keep a constant pressure in
variable-demand systems.
4.3 Settings
The description of settings applies both to pumps
without factory-fitted sensor and to pumps with a
factory-fitted pressure sensor.
Setpoint
You can set the desired setpoint in two ways:
•
via an input for external setpoint signal
•
with Grundfos GO Remote.
Other settings
Make all other settings with Grundfos GO Remote.
You can read important parameters, such as the
actual value of the control parameter and power
consumption, via Grundfos GO Remote.
4.4 Radio communication
This product incorporates a radio module for remote
control which is a class 1 device and which you can
use anywhere in the EU without restrictions.
For use in USA and Canada, see page 34.
Some variants of the product and products sold in
China and Korea have no radio module.
This product can communicate with the Grundfos
GO Remote and other products of the same type via
the built-in radio module.
5. Receiving the product
5.1 Transporting the product
WARNING
Falling objects
Death or serious personal injury
- Secure the product during
transportation to prevent it from tilting or
falling down.
CAUTION
Crushing of feet
Minor or moderate personal injury
- Wear safety shoes when moving the
product.
Do not stack more than two motors in their original
packaging.
5.2 Inspecting the product
Before you install the product, do the following.
1. Check that the product is as ordered.
2. Check that no visible parts have been damaged.
3. If parts are damaged or missing, contact your
local Grundfos sales company.
5
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