Grundfos BM 125, Installation And Operating Instructions Manual

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English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
CONTENTS
Page
1. Symbols used in this document
2. General description
Grundfos BM and BMhp booster modules are designed for
pressure boosting, liquid transfer and circulation in systems with
a high static pressure.
2.1 Pumped liquids
Thin, non-explosive liquids, not containing abrasive particles or
fibres. The liquid must not attack the pump materials chemically
and mechanically.
2.2 Sound pressure level
The sound pressure level of BM 4" and BM and BMhp 6" booster
modules is lower than 70 dB(A).
The sound pressure level of BM and BMhp 8" booster modules is
lower than 80 dB(A).
3. Delivery, transportation and storage
Delivery
The booster modules are supplied from the factory in proper
packing in which they should remain until they are to be installed.
The modules are ready for installation.
Transportation and storage
During transportation and storage, the booster modules may only
be placed in the positions shown in fig.
1 .
Before storage, the booster modules should be flushed through
with clean freshwater. See section
10.1.2 Flushing of the booster
module
.
Fig. 1 Positional requirements
Motors of standard modules are factory-filled with a Grundfos
motor liquid, SML-3, which is frost-proof down to -20 °C.
Motors of modules in special version may be filled with
demineralised water, i.e. not frost-proof.
3.1 Frost protection
If the module has to be stored, it must be stored on a frost-free
location, or it must be ensured that the motor liquid is frost-proof.
1. Symbols used in this document
2
2. General description 2
2.1 Pumped liquids 2
2.2 Sound pressure level
2
3. Delivery, transportation and storage 2
3.1 Frost protection 2
4. Preparation
3
5. Installation 3
5.1 Booster modules connected in series and in parallel 4
6. Pipe connection 4
7. Electrical connection
5
7.1 Frequency converter operation 5
8. Motor protection 6
8.1 Setting of motor-protective circuit breaker
6
9. Before starting the booster module(s) 6
10. Operation 6
10.1 Limitations to operation
7
11. Automatic monitoring devices 7
12. Checking of operation 7
13. Fault finding 8
14. Service documentation
8
15. Checking of motor and cable 9
16. Disposal 9
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
Warning
If these safety instructions are not observed, it may
result in personal injury.
Warning
If these instructions are not observed, it may lead to
electric shock with consequent risk of serious
personal injury or death.
Caution
If these safety instructions are not observed, it may
result in malfunction or damage to the equipment.
Note
Notes or instructions that make the job easier and
ensure safe operation.
Warning
The booster modules must not be used for the
pumping of flammable liquids such as diesel oil,
petrol or similar liquids.
TM
01
12
82
41
97
Caution
If the module has been stored for more than one
year, the motor liquid must be checked and refilled, if
required.
Allowed
Not allowed