Grundfos SRP 70.30.814.25.Ex.5.1D.A, Installation And Operating Instructions Manual

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English (GB)
Installation and operating instructions
Original installation and operating instructions.
CONTENTS
Page
1. Symbols used in this booklet
2. General description
Grundfos recirculation pumps type SRP are designed for transfer
of liquids of low to medium viscosity from one tank to another.
Fig. 1
SRP pump
2.1 Applications
Grundfos SRP recirculation pumps are used for the pumping of
return sludge in sewage treatment plants and for other pump
applications involving a high flow rate and low head. The pumps
are designed for continuous operation (S1).
In order not to overload the pumps and expose them to corrosion,
the following limitations must be observed.
* With a maximum dry solid content of 1.5 %.
1. Symbols used in this booklet 7
2. General description 7
2.1 Applications 7
2.2 Technical data
8
2.3 Potentially explosive environments 8
3. Identification
8
3.1 Type key
8
3.2 Nameplate 8
3.3 Ex certification and classification 9
4. Safety
9
4.1 General safety instructions
9
4.2 Explosion-proof versions 9
5. Transportation, delivery and storage
10
5.1 Transportation
10
5.2 Delivery 10
5.3 Storage 10
6. Installation 10
6.1 Positioning 10
6.2 Torques 11
6.3 Installation instructions 11
7. Electrical connection 12
7.1 Motor protection 13
7.2 Gearbox protection 13
7.3 Overload relays
14
7.4 Starting method 14
7.5 Wiring diagrams 14
7.6 Direction of rotation
14
7.7 Protection from electro-chemical corrosion 15
8. Start-up
15
9. Service 16
9.1 Contaminated pump 16
9.2 Service chart 17
9.3 Oil 18
9.4 Oil change 18
10. Fault finding 19
11. Technical data
20
11.1 Motor
20
11.2 Gearbox 20
11.3 Shaft seals 20
11.4 Impeller
20
11.5 Sound pressure level 20
12. Disposal 20
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
The use of this product requires experience with
and knowledge of the product.
Persons with reduced physical, sensory or
mental capabilities must not use this product,
unless they are under supervision or have been
instructed in the use of the product by a person
responsible for their safety.
Children must not use or play with this product.
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.
Warning
These instructions must be observed for
explosion-proof pumps. It is advisable also to
follow these instructions for standard pumps.
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.
T
M
03 03
74 33
08
Pos. Description
4 Pump rack
7 Motor
8 Gearbox
10 Impeller
22 Hydraulic inlet
Liquid temperature 5 to 40 °C
pH value 4-10
Maximum sludge index 125 ml/g
Maximum dynamic viscosity 500 mPas
Maximum density 1060 kg/m
3
*
Chloride content
≤
200 mg/l
(stainless steel 1.4301)
22
4
7
10
8