Grundfos DME, Инструкция по установке и эксплуатации

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CONTENTS
Page
1. General description 4
1.1 Applications 4
1.2 Type key 5
2. Technical data 6
2.1 Listings and classifications 7
2.2 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 15
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
This pump has been tested using water and follow-
ing chemical types:
• hydrochloric acid (HCl) 30-40 %
• sodium hydroxide (NaOH) 5-50 %
• nitric acid (HNO
3
) 5-65 %
• hydrogen peroxide (H
2
O
2
) 5-30 %
• sodium hypochlorite (NaOCl) 20 %
• sulphuric acid (H
2
SO
4
) 96 %
• aluminium sulfate (Al
2
(SO
4
)
3
) in aqueous solu-
tions,
• laundry detergent and
• ferric chloride (FeCl
3
) in aqueous solutions.
CAUTION: The suitability of this pump for use with
liquids other than water or the above chemicals is
the responsibility of the end user.
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 but-
tons. The control panel can be fitted either to the
front 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
ensures the same high accuracy and suction capa-
bility, irrespective of the capacity, which is infinitely
variable 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.
WARNING!
Prior to installation, read these installation
and operating instructions. Installation and
operation must comply with local regula-
tions and accepted codes of good prac-
tice.
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