Operating manual High-pressure double diaphragm pumps Cobra 40-10; Cobra 40-25
8 Cleaning and Maintenance
Order number 2340851 | Edition 05/2022
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2. Slowly open the ball valve (2).
3. Slowly dial up the air pressure at the pressure regulator (1) until the pump operates
smoothly (approx. 0.05 MPa; 0.5 bar; 7.25 psi).
4. Be ready for the switch from working product to air. Turn down pressure regulator (1)
far enough that the pump is still running normally (approx. 0–0.05 MPa; 0–0.5 bar; 0–
7.25 psi).
5. As soon as working product is no longer flowing from the return tube (4), close the ball
valve (2).
6. Close the relief valve (3).
Emptying via the spray gun
1. Point the spray gun (3), without nozzle, into the tank (5) and pull the trigger.
2. Slowly open the ball valve (2). Be ready for the switch from working product to air.
3. As soon as no more working product is flowing, close the ball valve (2).
4. Close and secure the spray gun.
5. Carry out pressure relief in accordance with Chapter Pressure Relief / Work Interruption
38].
6. Dispose of the contents of the tanks according to the local regulations.
8.2.7 Filling the Empty Pump
WARNING
Gas mixtures can explode if there is an incompletely filled pump!
Danger to life from flying parts.
Ignition of potentially explosive surrounding atmosphere.
4
Empty and fill the device slowly and in a controlled manner.
4
Avoid potentially explosive atmosphere in the surroundings.
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1
9
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7
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5
B_04240
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