Tabla De Contenido; Symbols Used In This Document; Permanent Magnets; Product Description - Grundfos CRN MAGdrive Manual Del Usuario

CONTENTS
1. Symbols used in this document
2. Permanent magnets
3. Product description
4. Technical data
5. Type key
6. Mechanical installation
6.1 Installation of pump
6.2 Connection of sensor
7. Electrical connection
7.1 Motor protection
8. Start-up
9. Maintenance
10. Fault finding
11. Service
11.1 Other documentation
12. Disposal
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.

1. Symbols used in this document

Warning
If these safety instructions are not observed,
it may result in personal injury!
If these safety instructions are not observed,
it may result in malfunction or damage to the
Caution
equipment!
Notes or instructions that make the job easier
Note
and ensure safe operation.

2. Permanent magnets

Warning
Persons with pacemaker or other magnet-
sensitive medical devices must not handle this
pump. They must keep a distance of at least
1 metre from the MAGdrive, as there is a risk of
influence from the magnetic fields of the pump.
Credit cards, computers, watches and other
magnet-sensitive objects should not be kept
close to the pump.
Warning
The pump contains powerful magnets that may
pose a risk of personal injury when servicing the
pump. The pump should therefore only be
dismantled and assembled by authorised
personnel.
4

3. Product description

Page Grundfos CRN MAGdrive are 100 % leakage-free, sealless
pumps. The motor torque is transmitted to the pump shaft by
4
means of magnetic force.
4
Grundfos CRN MAGdrive pumps are suitable for the pumping of
4
these liquids:
4
• Aggressive or corrosive liquids
5
• Toxic liquids
5
• Volatile liquids
5
• Obnoxious liquids
5
• Liquids without fibres and magnetic particles, as they may
5
cause wear of the pump.
5
5
5
5
5
5
5
Fig. 1 CRN MAGdrive pump
Pos. Description
1 Motor
2 Magnetic drive
3 Pump

4. Technical data

Liquid temperature:
Maximum system pressure: 25 bar.
Viscosity:
Minimum flow rate
The pump must never run without flow. The curve below shows
the minimum flow rate as a percentage of the rated flow rate in
relation to the liquid temperature.
Qmin
[%]
30
20
10
0
40 50 60 70 80 90 100 110 120 t [°C]
Fig. 2 Minimum flow rate
1
2
3
-30 to 120 °C.
2
0.3 to 300 cSt (mm /s).