General Information; Hazard Statements; Notes; Product Introduction - Grundfos CRE Instructions Manual

2. General information

Read this document before you install the product.
Installation and operation must comply with local
regulations and accepted codes of good practice.
These installation and operating instructions are a supplement to
installation and operating instructions for the corresponding
standard pumps CR, CRI, CRN, CRK, SPK, MTR. For instructions
not mentioned specifically here, please see installation and
operating instructions for the standard pump.

2.1 Hazard statements

The symbols and hazard statements below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
The hazard statements are structured in the following way:
SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
• Action to avoid the hazard.

2.2 Notes

The symbols and notes below may appear in Grundfos installation
and operating instructions, safety instructions and service
instructions.
Observe these instructions for explosion-proof products.
A blue or grey circle with a white graphical symbol
indicates that an action must be taken.
A red or grey circle with a diagonal bar, possibly with a
black graphical symbol, indicates that an action must not
be taken or must be stopped.
If these instructions are not observed, it may result in
malfunction or damage to the equipment.
Tips and advice that make the work easier.

3. Product introduction

Grundfos E-pumps have standard motors with integrated frequency
converter. The pumps are for three-phase power supply connection.

3.1 Pumps without factory-fitted sensor

The pumps have a built-in PI controller and can be set up for an
external sensor enabling control of the following parameters:
• pressure
• differential pressure
• temperature
• differential temperature
• flow rate
• liquid level in a tank.
From factory, the pumps have been set to control mode
uncontrolled. The PI controller can be activated by means of R100.

3.2 Pumps with pressure sensor

The pumps have a built-in PI controller and are set up with a
pressure sensor enabling control of the pump discharge pressure.
The pumps are set to control mode controlled. The pumps are
typically used to hold a constant pressure in variable-demand
systems.

3.3 Settings

The description of settings apply 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 different ways:
• directly on the pump control panel
• via an input for external setpoint signal
• by means of Grundfos wireless remote control R100.
Other settings
All other settings can only be made by means of the R100.
Important parameters such as actual value of control parameter,
power consumption, etc. can be read via the R100.
If special or customized settings are required, use Grundfos PC
Tool E-products. Contact your local Grundfos company for more
information.
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