Grundfos DP 10.50, Original Installation And Operating Instructions

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8
Original installation and operating instructions.
CONTENTS
Page
1. Symbols used in this document 8
2. General description 8
2.1 Applications 10
3. Operating conditions 10
3.1 Installation depth 10
3.2 Operating pressure 10
3.3 Operation 10
3.4 pH value 10
3.5 Liquid temperature 10
3.6 Density of pumped liquid 10
4. Approvals 11
4.1 Approval standards 11
4.2 Explanation to Ex approval 11
5. Identification 12
5.1 Nameplate 12
5.2 Type key 13
6. Safety 14
7. Transportation and storage 14
8. Installation 14
8.1 Installation on auto coupling 15
8.2 Free-standing submerged installation 16
9. Electrical connection 16
9.1 CIU unit (communication interface) 17
9.2 Electrical connection – single-phase
pumps
17
9.3 Electrical connection – three-phase
pumps
17
9.4 Alarm relay/communication connection 17
10. Configuration 18
10.1 Default settings 18
10.2 Pump alternation 18
10.3 Start level set 18
10.4 Thermal switches 19
11. Start-up 19
11.1 Before start-up 19
11.2 Operating modes 20
11.3 Direction of rotation 20
11.4 Resetting the pump 20
12. Maintenance and service 20
12.1 Recommended cleaning intervals
for sensors in standard pumps 21
12.2 Required cleaning intervals for
sensors in explosion-proof pumps 21
12.3 Inspection intervals 21
12.4 Adjustment of impeller clearance 22
12.5 Cleaning the pump housing 22
12.6 Cleaning the sensors 22
12.7 Checking/replacing the shaft seal 22
12.8 Oil change 23
12.9 Service kits 24
12.10 Built-in protection 25
12.11 Contaminated pumps 25
13. Fault finding chart 26
13.1 Megging 26
14. Technical data 27
14.1 Supply voltage 27
14.2 Enclosure class 27
14.3 Ex protection 27
14.4 Insulation class 27
14.5 Pump curves 27
14.6 Sound pressure level 27
15. Disposal 27
1. Symbols used in this document
2. General description
The electronic Grundfos DP and EF pumps
incorporate a controller and motor-protective
functions. They only need to be connected to the
mains supply.
The controller offers the following benefits:
• Built-in level and dry-running sensors.
• Built-in motor protection.
• Pump alternation.
If several pumps are installed in the same tank,
the control logic incorporated in the pump will
ensure that the load is distributed evenly among
the pumps over time.
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.
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.