9
7.2 Operating the pump
To operate the pump, refer to sections 8. Operation and 9. Maintenance, and if necessary, section 10. Fault
finding chart in the event of a fault.
7.3 Shutdown
Warning Risk of chemical burns! 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!
If possible, rinse the dosing head before shutting down the pump, e.g. by supplying it with water.
7.3.1 Switching off / uninstalling
1 Switch off the pump and disconnect it from the power supply.
2 Depressurise the system.
3 Take suitable steps to ensure that the returning dosing medium is safely collected.
4 Carefully remove all lines.
5 Uninstall the pump.
7.3.2 Cleaning
1. Rinse all parts that have come into contact with the medium very carefully:
– lines
– valves
– dosing head
– diaphragm.
2. Remove any trace of chemicals from the pump housing.
7.3.3 Storage
Storage of the pump:
1 After cleaning (see above), carefully dry all parts and reinstall the dosing head and valves, or
2 change the valves and diaphragm. See section 9. Maintenance.
8. Operation
Warning Faults, incorrect operation or faults on the pump or system can, for example, lead to excessive or
insufficient dosing, or the permissible pressure may be exceeded. Consequential faults or damage must be
evaluated by the operator and appropriate precautions must be taken to avoid them!
In the event of a diaphragm leakage, the dosing liquid may leak out of the hole in the intermediate flange between
the pump and the dosing head. The parts inside the housing are protected from the dosing liquid for a short time
(depending on the type of liquid) by the housing sealing. It is necessary to check regularly (daily) if liquid is
leaking out of the intermediate flange.
For maximum safety, we recommend the pump version with diaphragm leakage detection.
8.1 Control and display elements
8.1.1 Stroke-length adjustment
Adjust the stroke length only while the pump is running!
8.1.2 Control and display elements for pumps with control unit
See fig. 6 on page 16
Element Description
Light-emitting diode (LED)
Lights up red when the pump is
stopped.
Lights up green when the pump is
started and briefly turns off during a
suction stroke.
Flashes red if an error signal is
present.
Manual / Contact LEDs
Either "Manual" or "Contact" lights up
green, depending on the operating
mode.
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