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VERSION 11/2015
OPERATING MANUAL
8.2.5
EMPTYING THE PUMP
Gas mixtures can explode if there is an incompletely filled
pump!
Danger to life from fl ying parts.
Ignition of potentially explosive surrounding atmosphere.
If the pumping product becomes heated, switch off all heaters and let the product
cool off .
1. Visual check: personal safety equipment, grounding and all devices ready to use.
2. Carry out basic fl ushing in accordance with Chapter 7.6.
3. Place grounded collection tank (5) under the return tube (4).
4. Place the suction hose (7) in an empty, grounded tank (6).
5. Close pressure regulator (1) (0 MPa; 0 bar; 0 psi).
Empty using return line
6. Open return valve (3).
7. Slowly open the ball valve (2).
8. Slowly turn air pressure up on the pressure regulator (1) and only until the pump is
running normally (approx. 0.05 MPa; 0.5 bar; 7.25 psi).
9. Be ready for the switch from working material 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).
10. As soon as working material is no longer fl owing from the return tube (4), close ball
valve (2).
11. Close return valve (3).
Empty up to the gun
12. Point the gun, without nozzle, into tank (5) and open it.
13. Slowly open the ball valve (2). Be ready for the switch from working material to air.
14. As soon as working material is no longer fl owing from the return tube, close the ball
valve (2).
15. Close and secure gun.
16. Depressurization in accordance with Chapter 7.5.
17. Dispose of the contents of the tank (5) according to the local regulations.
ORDER NUMBER DOC2333553
WARNING
Empty the device slowly and in a controlled manner.
Avoid potentially explosive atmosphere in the surroundings.
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