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.
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.
Installation of pump
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.
Electrical connection
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.
Perform service
Warning
Risk of chemical burns!
When dosing dangerous media, observe the corresponding precautions in the safety data sheets!
Wear protective clothing (gloves and goggles) when working on the dosing head, connections or
lines!
Do not allow any chemicals to leak from the pump. Collect and dispose of all chemicals correctly!
Caution Before any work to the pump, the pump must be disconnected from the power supply. The system
must be pressureless!
Dismantling the diaphragm and valves
Warning
Danger of explosion, if dosing liquid has entered the pump housing!
If the diaphragm is possibly damaged or if the pump was operated with damaged or loose dosing
head screws, don’t connect the pump to the power supply!
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English (GB)
