Symbols Used In This Document; Warnings Against Hazards Involving Risk Of Death Or Personal Injury; Other Important Notes; Product Introduction - Grundfos Hydro Multi-E Series Installation And Operating Instructions Manual

1. Symbols used in this document

1.1 Warnings against hazards involving risk of death
or personal injury
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 text accompanying the three hazard symbols DANGER,
WARNING and CAUTION is structured in the following way:
SIGNAL WORD
Description of hazard
Consequence of ignoring the warning.
- Action to avoid the hazard.

1.2 Other important notes

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.

2. Product introduction

2.1 Product description

Hydro Multi-E incorporates Grundfos CRE, CRIE, CME-A or
CME-I pumps with integrated frequency-controlled single- or
three-phase MGE motors and a breaker cabinet.
Grundfos Hydro Multi-E booster systems are designed for
pressure boosting of clean water.
Typical applications:
• blocks of flats
• hotels
• hospitals
• schools
• office buildings.
The system adjusts its performance to the demand by cutting the
required number of pumps in or out and through parallel control of
the pumps in operation.

2.2 Intended use

Hydro Multi-E is a range of factory-assembled booster systems
ready for installation and operation.
The system maintains a constant pressure through continuous
variable adjustment of the speed of the connected pumps.
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Fig. 1 Hydro Multi-E components
Pos. Description
1 Pump
2 Diaphragm tank
3 Pressure sensor and gauge
4 Outlet manifold
5 Bent base frame or base frame C-profile
6 Breaker box
7 Nameplate
8 Non-return valve
9 Pressure switch or pressure sensor and gauge
10 Inlet manifold
11 Isolating valve
The breaker cabinet incorporates a main switch and circuit
breakers.
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11
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