Table Of Contents; General Information; Hazard Statements; Notes - Grundfos CU 301 Installation And Operating Instructions Manual

English (GB) Installation and operating instructions
Original installation and operating instructions

Table of contents

1. General information . . . . . . . . . . . . . 4
1.1 Hazard statements . . . . . . . . . . . . . . 4
1.2 Notes . . . . . . . . . . . . . . . . . . . . . 4
2. Installing the product . . . . . . . . . . . . 5
2.1 Mechanical installation . . . . . . . . . . . . 5
2.2 Electrical connection . . . . . . . . . . . . . 6
2.3 Positioning the pressure sensor . . . . . . . 7
2.4 Precharge pressure setting . . . . . . . . . . 8
2.5 Pressure relief valve . . . . . . . . . . . . . 8
3. Product introduction . . . . . . . . . . . . 8
3.1 Product description . . . . . . . . . . . . . . 8
3.2 System sizing . . . . . . . . . . . . . . . . . 11
3.3 Intended use . . . . . . . . . . . . . . . . . 12
4. Control functions . . . . . . . . . . . . . . 13
4.1 On/off button . . . . . . . . . . . . . . . . . 13
4.2 Indication of pump operation . . . . . . . . . 13
4.3 Pressure setting. . . . . . . . . . . . . . . . 14
4.4 Button locking . . . . . . . . . . . . . . . . . 14
4.5 Alarm functions . . . . . . . . . . . . . . . . 14
4.6 Service alarm . . . . . . . . . . . . . . . . . 15
4.7 Dry-running protection . . . . . . . . . . . . 15
4.8 Position of LEDs . . . . . . . . . . . . . . . 16
4.9 Grundfos GO Remote menu overview . . . . 17
5. Setting the product . . . . . . . . . . . . . 18
5.1 CU 301 with Grundfos GO Remote . . . . . 18
5.2 Status . . . . . . . . . . . . . . . . . . . . . 18
5.3 Settings . . . . . . . . . . . . . . . . . . . . 19
6. Servicing the product . . . . . . . . . . . . 22
7. Fault finding the product . . . . . . . . . . 23
7.1 Fault finding with Grundfos GO Remote . . . 23
8. Technical data . . . . . . . . . . . . . . . . 27
9. Disposing of the product . . . . . . . . . . 29
10. Document quality feedback . . . . . . . . 29

1. General information

Read this document before you install the
product. Installation and operation must
comply with local regulations and accepted
codes of good practice.
4

1.1 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.

1.2 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.