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Do not disconnect tubing while under pressure.
Danger of accident due to tubing slipping off!
Use shortest possible tubing connections.
Wear safety glasses.
Immediately deactivate compressed air supply if the tubing slips off.
Pneumatic circuit setup:
Connect the devices using plastic tubing with an outside diameter of 4 or 6 mm. Push the tubing into the
push-in connector as far as it will go.
Switch compressed air supply off before dismantling the circuit.
Dismantling pneumatic circuit:
Press the blue release ring down, after which the tubing can be pulled out.
5

Work instructions

Process engineering
The lower tank may only be filled when supply power is switched off!
Switch 24 V DC power supply off and disconnect the power supply unit from 230 V DC power.
Use drinking water (recommended), which ensures long-term, maintenance-free operation of the
system.
The maximum permissible operating temperature of +65° C for the tank may not be exceeded.
The maximum permissible operating pressure of 0.5 bar for the liquid in the tubing may not be
exceeded.
The pump must not be allowed to run dry. The pump may not be used with seawater, contaminated
liquids or viscous media.
Empty the liquid from the system by opening the drain valve after completing experiments or before
changing the piping layout.
Inspect the liquid and replace it at least once a week if contaminated.
Clean the system as required, but in any case at least once a week. Do not use aggressive cleansers or
scouring agents.
The liquid ages if the system is left at a standstill for a lengthy period of time. Always empty the tanks
and the piping before leaving the system at a standstill for any length of time.
No liquids may be permitted to remain within the system for long periods of time, because this may
result in the growth of bacteria such as so-called legionellae.
Pneumatics
Set system pressure to a value within a range of 300 to 600 kPa (3 to 6 bar) for operation of the 2-way
ball valve with pneumatic quarter-turn actuator.
© Festo Didactic 746310
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Edukit pa advanced

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