Installation; Safety Instructions; Installation Environment; Installation Of Pump - Grundfos DMS Serie Montage- Und Betriebsanleitung

3. Installation

3.1 Safety instructions

• When working with chemicals, local safety rules
and regulations must be observed (e.g. wear pro-
tective clothes).
• Before starting work on the dosing pump and sys-
tem, disconnect the electricity supply to the pump,
ensuring that it cannot be accidentally switched
on. Before reconnecting the electricity supply,
make sure that the dosing hose is positioned in
such a way that any chemical left in the dosing
head is not ejected, thereby exposing persons to
danger.
• If the vent valve in the dosing head is used, it
must be connected to a hose which is led back to
the tank.
• When changing a chemical, make sure that the
materials of the dosing pump and system are
resistant to the new chemical. If there is any risk
of chemical reaction between the two types of
chemicals, clean the pump and system thoroughly
before adding the new chemical.
Proceed as follows:
Place the suction hose in water and press the
button until residual chemical has been removed.
Note: When the buttons
simultaneously, the pump can be set to run for a
specific number of seconds at maximum capacity.
The remaining number of seconds will appear in
the display. The maximum value is 300 seconds.
• The liquid is under pressure and may be hazard-
ous.

3.2 Installation environment

• Exposure to direct sunlight should be avoided.
This applies especially to pumps with plastic dos-
ing heads, as this material can be damaged by
sunlight.
• If the pump is installed outside, an enclosure or
similar protection is required to protect the pump
against rain and similar weathers.
100%
and are pressed
100%

3.3 Installation of pump

• See also the installation example in section 3.4.
• Note: The dosing head may contain water from
the factory test. If a liquid which must not come
into contact with water is to be dosed, it is recom-
mended to let the pump run with another liquid to
remove the water from the dosing head before
installation.
• Always install the pump on the supporting foot
with vertical suction and discharge ports.
• Always use suitable tools for the mounting of plas-
tic parts. Never apply unnecessary force.
• Make sure that the dosing pump and system are
designed in such a way that neither system equip-
ment nor buildings are damaged in case of leak-
age from the pump or rupture of hoses/pipes. The
installation of leakage hoses and collecting tanks
is recommended.
• Make sure that the drain hole in the dosing head
points downwards, see fig. 1.
Note: It is important that the drain pipe/hole is not
inserted direct into the tank contents, as gasses
may penetrate into the pump.
Fig. 1
Drain hole
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