4
CONTENTS
Page
General description
Applications
Type key
Technical data
Mechanical data
Electrical data
Input/output data
Dimensions
Installation
Safety instructions
Installation environment
Installation of pump
Installation example
Electrical connection
Connection overview
Functions
Control panel
Start/stop of pump
Priming/venting of pump
Level control
Indicator lights and alarm output
Fieldbus communication
Menu
Operating modes
Manual
4.10 Pulse
4.11 Analog
4.12 Timer
4.13 Batch
4.14 Anti-cavitation
4.15 Capacity limitation
4.16 Counters
4.17 Resetting
4.18 Return
4.19 Language
4.20 Input setup
4.21 Measuring units
4.22 Dosing monitoring
4.23 Control panel lock
Start-up
Calibration
Direct calibration
Indirect calibration
Check calibration
Maintenance
Service
Fault finding chart
Disposal
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 di-
aphragm 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,
• 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.
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