Installation Location; Mounting; Approximate Values When Using Pulsation Dampers - Grundfos DMH 28X Instrucciones De Instalación Y Operación

6.2 Installation location

6.2.1 Space required for operation and maintenance
The pump must be installed in a position where it is
Note easily accessible during operation and maintenance
work.
Maintenance work on the dosing head and the valves must be
carried out regularly.
• Provide sufficient space for removing the dosing head and the
valves.
6.2.2 Permissible ambient influences
See section 3.8 Ambient and operating
The installation site must be under cover!
Note
Do not install outdoors!
6.2.3 Mounting surface
The pump must be mounted on a flat surface.

6.3 Mounting

• Mount the pump on a console or pump foundation using four
screws.
The flow must run in the opposite direction to gravity!
Note
6.4 Approximate values when using pulsation
dampers
Risk of damage to the system!
It is always recommended to use pulsation dampers
for large high-speed pumps!
Caution
Since the pulsation is influenced by many factors, a
system-specific calculation is essential. Request a
calculation from our calculation program.
The table below indicates the approximate values and the suction
line length for which suction pulsation dampers are required. The
values apply to 50 Hz operation when water or similar liquids are
dosed.
18
conditions.
Pump model / Nominal width of
pump type suction line
DMH 280
DMH 1,45-200 DN 4
DMH 2,22-200 DN 4
DMH 2,81-200 DN 4
DMH 3,42-200 DN 4
DMH 281
DMH 2-100 DN 8
DMH 4,2-100 DN 8
DMH 6,4-100 DN 8
DMH 8-100 DN 8
DMH 9,6-100 DN 8
DMH 283
DMH 10-100 DN 20
DMH 19-100 DN 20
DMH 27-100 DN 20
DMH 33-100 DN 20
DMH 40-100 DN 20
DMH 55-100 DN 20
DMH 285
DMH 40-100 DN 20
DMH 52-100 DN 20
DMH 70-100 DN 20
DMH 80-100 DN 20
DMH 105-100 DN 20
DMH 286
DMH 85-50 DN 20
DMH 111-50 DN 20
DMH 170-50 DN 20
DMH 222-50 DN 20
DMH 287
DMH 18-200 DN 8
DMH 23-200 DN 8
DMH 31-200 DN 8
DMH 36-200 DN 8
DMH 50-200 DN 8
DMH 288
DMH 7,5-200 DN 8
DMH 10,4-200 DN 8
DMH 12,8-200 DN 8
DMH 15,5-200 DN 8
DMH 21-200 DN 8
Maximum length
of suction line
[m]
8
8
8
8
8
8
8
8
8
8
8
8
8
8
6
8
8
6
5
3
2.5
2.5
2.5
1.5
8
4
3
2
1
8
4
3
2
1