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3.4 Suction heights
• Data in mWC.
Applies to:
• non-degassing and non-abrasive media
• Newtonian liquids
• temperature of 20 °C
• standard pump version.
3.4.1 Media with a viscosity similar to water
Maximum suction height: 3 mWC.
3.4.2 Suction heights for media with maximum permissible
viscosity
Flooded suction: 1-3 mWC.
3.5 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.
• Sound pressure level: 70 ± 5 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.
• Minimum pressure on the suction side: 1 bar.
3.6 Dosing medium
The dosing medium must have the following basic characteristics:
• liquid
• non-abrasive
• non-flammable.
3.6.1 Permissible media temperature
* For SIP/CIP applications, a temperature of 145 °C at a
counterpressure of max. 2 bar is permitted for a short period
(15 minutes).
3.6.2 Maximum permissible viscosity
Applies to:
• non-degassing and non-abrasive media
• Newtonian liquids
• temperature of 20 °C
• standard pump version.
3.7 Electrical data
3.7.1 Enclosure class
The enclosure class depends on the motor variant selected, see
motor nameplate.
The specified enclosure class can only be ensured if the power
supply cable is connected with the same degree of protection.
3.7.2 Motor
Version: see motor and pump nameplates.
3.8 Materials
Pump
• Pump housing: Al 226
• Diaphragm flanges: GG 25.
Optoelectronic diaphragm sensor
• Housing: ABS.
3.9 Weights
Caution
The installation site must be under cover!
Ensure that the enclosure class of motor and pump
are not affected by the atmospheric conditions.
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!
Caution
In the event of questions regarding the material
resistance and suitability of the pump for specific
dosing media, please contact Grundfos.
Dosing head material
Temperature range
p < 10 bar
PVC
0 °C to +40 °C
Stainless steel*
-10 °C to +70 °C
PP
0 °C to +40 °C
Caution
Observe the freezing and boiling points of the dosing
medium!
Pump type
Viscosity
[mPa s]
50 Hz
60 Hz
DMX 860-5
800
400
DMX 1120-5
400
200
DMX 1520-3
400
200
DMX 2000-3
200
100
Approx. weight
[kg]
Single-head pumps
50
Double-head pumps
90
Содержание DMX 227
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