Suction Heights; Ambient And Operating Conditions; Dosing Medium; Electrical Data - Grundfos DMX 227 Montage- Und Betriebsanleitung

3.5 Suction heights

• Data in mWC.
Applies to:
• non-degassing and non-abrasive media
• Newtonian liquids
• temperature of 20 °C
• standard pump version.
3.5.1 Media with a viscosity similar to water
Maximum suction height: 3 mWC.
3.5.2 Suction heights for media with maximum permissible
viscosity
Flooded suction: 1-3 mWC.

3.6 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
Caution 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!
• 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.

3.7 Dosing medium

In the event of questions regarding the material
Caution
resistance and suitability of the pump for specific
dosing media, please contact Grundfos.
The dosing medium must have the following basic characteristics:
• liquid
• non-abrasive
• non-flammable.
3.7.1 Permissible media temperature
Dosing head material
PVC
Stainless steel*
PP
* For SIP/CIP applications, 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
Caution
medium!
8
Temperature range
p < 10 bar
0 °C to +40 °C
-10 °C to +70 °C
0 °C to +40 °C
3.7.2 Maximum permissible viscosity
Applies to:
• non-degassing and non-abrasive media
• Newtonian liquids
• temperature of 20 °C
• standard pump version.
Single pump Double pump
DMX 430-5 DMX 430-5/430-5
DMX 860-5 DMX 860-5/860-5
DMX 1120-5 DMX 1120-5/1120-5
DMX 770-3 DMX 770-3/770-3
DMX 1520-3 DMX 1520-3/1520-3
DMX 2000-3 DMX 2000-3/2000-3

3.8 Electrical data

3.8.1 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.
3.8.2 Motor
Version: see motor and pump nameplates.

3.9 Materials

Pump
• Pump housing: Al 226
• Diaphragm flanges: GG 25.
Optoelectronic diaphragm sensor
• Housing: ABS.

3.10 Weights

Single pumps
DMX 430-5 - DMX 2000-3
Double pumps
DMX 430-5/430-5 - DMX 2000-3/2000-3
Viscosity
[mPa s]
50 Hz 60 Hz
1000 800
800 400
400 200
800 400
400 200
200 100
Approx. weight
[kg]
50
90