Ambient And Operating Conditions; Dosing Medium - Grundfos DMX 226 Installation And Operating Instructions Manual

4.4.2 Suction heights for media with maximum permissible
viscosity
Applies to:
• Newtonian liquids
• non-degassing and non-abrasive media
• temperature of 20 °C
• standard pump version.
Maximum viscosity
Pump type
[m Pas]
DMX 24-8 1000
DMX 37-5 600
DMX 52-8 700
DMX 60-3 500
DMX 67-10 700
DMX 82-5 500
DMX 95-8 500
DMX 100-8 400
DMX 130-3 400
DMX 132-10 400
DMX 142-8 200
DMX 152-6 400
DMX 160-5 200
DMX 190-10 200
DMX 199-8 200
DMX 224-5 150
DMX 249-3 100
DMX 255-3 100
DMX 280-8 150
DMX 315-3 100
DMX 321-6 100
DMX 380-3
DMX 460-6
DMX 525-3
DMX 765-3
10
Suction height
[mWC]
1
1
1
0
1
1
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
50 0
50 0
50 0
10 0
DosingPump.ir

4.5 Ambient and operating conditions

• Permissible ambient temperature: 0 °C to +40 °C.
• Permissible storage temperature: -20 °C to +50 °C.
• Permissible air humidity: max. relative humidity (non-
condensing): 70 % at +40 °C, 90 % at +35 °C.
The installation site must be under cover!
Ensure that the enclosure class of motor and pump are
not affected by the atmospheric conditions.
Caution
Pumps with electronics are only suitable for indoor use!
Do not install outdoors!
Warning
Risk of hot surfaces!
Pumps with AC motors may become hot.
Allow a minimum space of 100 mm above the fan cover!
• Sound pressure level: ± 55 dB(A), testing according to DIN
45635-01-KL3
• Minimum counterpressure: 1 bar at the pump discharge valve.
Pay attention to the pressure losses along the way to the
injection point inclusively.
Pumps with AR control unit only
Maximum permissible mains impedance: 0.084 + j 0.084 Ω (testing
according to EN 61000-3-11).

4.6 Dosing medium

In the event of questions regarding the material resistance
and suitability of the pump for specific dosing media,
Caution
please contact Grundfos.
The dosing medium must have the following basic characteristics:
• liquid
• non-abrasive
• non-flammable.
4.6.1 Permissible media temperature
Dosing head material
PVC
Stainless steel *
PP
PVDF
* For SIP/CIP applications (not with ATEX): A temperature of 145 °C at a
counterpressure of max. 2 bar is permitted for a short period (15 minutes).
Observe the freezing and boiling points of the dosing me-
Caution
dium!
Temperature range
p < 10 bar
0 °C to +40 °C
-10 °C to +70 °C
0 °C to +40 °C
-10 °C to +60 °C
+70 °C at 9 bar