Dosing Curves; Disposing Of The Product; Disposing Of Hazardous Or Toxic Materials - Grundfos DMX 221 Installation And Operating Instructions Manual

Related information
11.2.5.1 Dimensional sketch of DMX pumps with
VFD
9.5.2 Weights DMX 221
The values in the table below apply to pumps without
AR control unit, Servomotor or VFD.
Weight [kg]
Pump type
Plastic dosing
head
DMX 4-10 5
DMX 7-10 5
DMX 7,2-16 5
DMX 8-10 5
DMX 9-10 5
DMX 12-10 5
DMX 13,7-16 5
DMX 14-10 5
DMX 16-10 5
DMX 16-12 5
DMX 17-4 7.5
DMX 18-10 5
DMX 25-3 8
DMX 26-10 5
DMX 27-10 5
DMX 27-12 5
DMX 35-10 5
DMX 39-4 7.5
DMX 50-10 5
DMX 60-3 8
DMX 75-4 7.5
DMX 115-3 8

9.6 Dosing curves

The dosing curves are approximated curves showing
the dependency between pump performance,
counterpressure and stroke length. The stated values
apply to the following conditions:
• Newtonian liquid
• density similar to that of water
• inlet line with foot valve
•
•
•
Abbreviation Description
Q
Q
Q [l/h]
Stainless steel
dosing head
h
7
h [%]
7
7 Hz
7
bar
7
7
Related information
7
A.1. Curves
3.6 Adjusting the zero point
7
3.7 Adjusting the dosing flow via the stroke length
7
7

10. Disposing of the product

12
10.1 Disposing of hazardous or toxic
7
13
7
7
7
7
12
7
13
12
The materials used in DMX pumps do not pose any
health risk to the person handling them. To identify
13
the specific materials, check the type key on the
product nameplate and read the explanation in the
section Type key.
Observe also the product recycling page on
www.grundfos.com/products/product-sustainability/
dmx.html
Related information
5.3.2 Type key
flooded suction, 0.5 m
zero point of pump for specified pressure
standard pump version.
Dosing flow
Zero point of the pump.
0
Dosing flow in litres per hour
Stroke length
Stroke length in percent of
maximum stroke length
Frequency of the alternating current
power supply in Hz = 1/s
Counterpressure at the pump outlet
valve in bar
materials
WARNING
Chemical hazard
Death or serious personal injury
‐
Observe the material safety data sheet
of the dosing medium.
‐
Wear protective clothing when working
on the dosing head, connections or
lines.
‐
Rinse the parts that have been in
contact with the dosing medium.
‐
Collect and dispose of all chemicals in
a way that is not harmful to persons or
the environment.
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