English (GB)
3
1.4 Applications
The pump is suitable for liquid, non-abrasive, non-
flammable and non-combustible media. Observe the
technical data of the product.
1.5 Improper operating methods
2. Installation
2.1 Safety instructions
•
Liquid is under pressure and may be hazardous.
•
When working with chemicals, local safety rules
and regulations must be observed (e.g. wear
protective clothes).
•
Before starting work on the dosing pump and
system, 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 tube in water and press the
button until residual chemical has been removed.
Note:
When the buttons
and
are pressed
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.
2.2 Installation of pump
2.3 Electrical connection
.
Warning
Other applications or the operation of
pumps in ambient and operating
conditions, which are not approved, are
considered improper and are not
permitted. Grundfos cannot be held liable
for any damage resulting from incorrect
use.
Warning
The pump must be equipped with a
diaphragm leakage detection when used
for crystallising media.
Warning
The pump is NOT approved for operation
in potentially explosive areas!
Warning
A sunscreen is required for outdoor
installation!
Caution
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 recommended to let the pump
run with another liquid to remove the water
from the dosing head before installation.
Caution
Cross-tighten the dosing head screws with
a torque wrench once before
commissioning and again after 2-5
operating hours at 5.5 Nm (+ 0.5/- 0 Nm).
Caution
Never attach a hose to the drain opening.
Warning
Danger to life due to non-tripping of the
residual current device (RCD)!
If the pump is connected to an electric
installation where a residual current device
(RCD) is used as an additional protection,
this RCD must trip when earth fault
currents with DC content (pulsating DC)
and smooth DC earth fault currents occur.
This means that a RCD type B, sensitive to
universal current, must be used.
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