English (US)
4
4. General information
These installation and operating instructions are a supplement to
the installation and operating instructions for the corresponding
standard pumps CR, CRI, CRN, CRK, SPK, MTR and CM.
For instructions not mentioned specifically in this manual, see the
installation and operating instructions for the standard pump.
5. General description
Grundfos E-pumps are fitted with frequency-controlled
permanent-magnet motors for single-phase or three-phase power
supply connection.
5.1 Pumps without factory-fitted sensor
The pumps have a built-in PI controller and can be set up for an
external sensor enabling the control of the following parameters:
• constant pressure
• constant differential pressure
• constant temperature
• constant differential temperature
• constant flow rate
• constant level
• constant curve
• constant other value.
The pumps have been factory-set to constant-curve control
mode. The control mode can be changed with the R100 or
Grundfos GO Remote.
5.2 Pumps with factory-fitted pressure sensor
The pumps have a built-in PI controller and are set up with a
pressure sensor enabling the control of the pump discharge
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.
5.3 Settings
The description of settings applies both to pumps without
factory-fitted sensor and to pumps with a factory-fitted pressure
sensor.
Setpoint
The desired setpoint can be set in three ways:
• directly on the pump control panel
• via an input for external setpoint signal
• by means of Grundfos wireless remote control R100 or
Grundfos GO Remote.
Other settings
All other settings can only be made by means of the R100 or
Grundfos GO Remote.
Important parameters, such as actual value of control parameter,
power consumption, etc. can be read via the R100 or Grundfos
GO Remote.
If special or customized settings are required, use Grundfos PC
Tool E-products. Contact your local Grundfos company for more
information.
5.4 Radio communication
This product incorporates a radio module for remote control. For
use in USA and Canada, see page 41.
This product can communicate with the Grundfos GO Remote
and other products of the same type via the built-in radio module.
In some cases, an external antenna may be required.
Only Grundfos-approved external antennas may be connected to
this product, and only by a Grundfos-approved installer.
5.5 Battery
A Li-ion battery is fitted in CRE, CRIE, CRNE, CRKE, SPKE and
MTRE pumps. The Li-ion battery complies with the Battery
Directive (2006/66/EC). The battery does not contain mercury,
lead and cadmium.
6. Mechanical installation
6.1 Mounting
The pump must be secured to a solid foundation by means of
bolts through the holes in the flange or baseplate.
6.2 Cable entries
The motor has four M20 screwed cable entries fitted with blind
plugs from factory.
The following cable glands are included:
• 2 x M20 cable gland, sensor/signal cables
• 1 x M20 cable gland, power supply cable.
Warning
Installation and operation must comply with local
regulations and accepted codes of good practice.
In order to maintain the UR mark, follow the
additional installation procedures on page 41.
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