4
CONTENTS
Page
1.
General description
4
1.1
Applications
4
1.2
Type key
5
2.
Technical data
6
2.1
Mechanical data
6
2.2
Electrical data
6
2.3
Input/output data
6
2.4
Dimensions
7
3.
Installation
7
3.1
Safety instructions
7
3.2
Installation environment
7
3.3
Installation of pump
7
3.4
Installation example
8
3.5
Electrical connection
8
3.6
Connection overview
9
4.
Functions
10
4.1
Control panel
10
4.2
Start/stop of pump
11
4.3
Priming/venting of pump
11
4.4
Level control
11
4.5
Indicator lights and alarm output
11
4.6
Fieldbus communication
12
4.7
Menu
13
4.8
Operating modes
14
4.9
Manual
14
4.10 Pulse
14
4.11 Analog
14
4.12 Timer
16
4.13 Batch
17
4.14 Anti-cavitation
17
4.15 Capacity limitation
18
4.16 Counters
18
4.17 Resetting
19
4.18 Return
19
4.19 Language
19
4.20 Input setup
20
4.21 Measuring units
21
4.22 Dosing monitoring
22
4.23 Control panel lock
23
5.
Start-up
24
6.
Calibration
25
6.1
Direct calibration
26
6.2
Indirect calibration
27
6.3
Check calibration
28
7.
Maintenance
28
8.
Service
28
9.
Fault finding chart
29
10.
Disposal
29
Before beginning installation procedures,
these installation and operating instruc-
tions should be studied carefully. The in-
stallation and operation should also be in
accordance with local regulations and ac-
cepted codes of good practice.
1. General description
The GRUNDFOS DME dosing pump is a self-priming
diaphragm pump.
The pump consists of:
• a cabinet incorporating the drive unit and elec-
tronics,
• a dosing head with back plate, diaphragm,
valves, connections and vent valve and
• a control panel incorporating display and buttons.
The control panel can be fitted either to the end or
to the side of the cabinet.
Being equipped with a stepper motor, this dosing
pump is unique in its field. The stepper motor offers
the possibility of varying the capacity by changing
the duration of the dosing stroke.
Furthermore, the motor is controlled in such a way
that the dosing gets as even and constant as possi-
ble, irrespective of the capacity range in which the
pump is operating.
This is carried out as follows:
The speed of the suction stroke is kept constant and
the stroke relatively short, irrespective of the capa-
city. Contrary to conventional pumps, which generate
the dosing stroke as a short pulse, the duration of
the dosing stroke will be as long as possible. Thus,
an even dosing without peak values is ensured. As
the pump is always dosing at full stroke length, it en-
sures the same high accuracy and suction capability,
irrespective of the capacity, which is infinitely varia-
ble in the ratio of 1:1000.
The pump features an LCD display and a user-
friendly control panel which gives access to the
pump functions.
1.1 Applications
The DME dosing pump is designed for handling
chemicals within the following ranges of applications,
among others:
• Drinking water treatment.
• Wastewater treatment.
• Swimming pool water treatment.
• Boiler water treatment.
• Cooling water treatment.
• Process water treatment.
• Washing systems.
