33
VERSION 01/2018
ORDER NUMBER DOC 2316596
7.5 BASIC FLUSHING
Regular ushing
Regular ushing, cleaning and maintenance ensures the pump's high pumping and
extraction capacity.
The cleaning and ushing agents used must be compatible with the working
material.
WARNING
Incompatibility of ushing / cleaning agent with the working medium!
Risk of explosion and danger of poisoning by toxic gases.
Examine the compatibility of the ushing and cleaning agents and working media
on the basis of the safety data sheets.
Flushing procedures
open
closed
1. Visual check: personal safety equipment, grounding and all
devices ready to use.
2. Relieve the pump's pressure according to Chapter 7.4.
3. Place empty, grounded metal tank (5) for return product under
the return tube (3).
4. Place pump in grounded metal tank (6) with ushing agent.
5. Adjust the pressure regulator (1) to approx. 0.05 MPa; 0.5 bar;
7.25 psi.
Flushing via the return valve
6. Open return valve (3).
7. Slowly open the ball valve (2).
8. Adjust the air pressure on the pressure regulator (1) so that
the pump runs smoothly.
9. Flush the system until the cleaning agent that ows into
the tank (5) is clean.
10. Close ball valve (2).
11. As soon as there is no pressure remaining in the system,
close the return valve (3).
Flushing via the valve
12. Relieve the system's pressure upstream of the valve (4) in accordance with the
superordinate operating manual. Open the valve (4).
13. Slowly open the ball valve (2).
14. Rinse until clean ushing agent ows from the system.
15. Close ball valve (2).
16. As soon as there is no pressure remaining in the system, close the valve (4). Observe
superordinate operating manual.
17. Repeat steps 6 – 16 if necessary.
External Cleaning
18. Clean the outside of the system.
19. Fully assemble the system.
20. Relieve the pump's pressure according to Chapter 7.4.
21. Dispose of the contents of the tank (5) according to the local regulations.
7.6 FILLING WITH WORKING MATERIAL
After basic ushing, the pump can be lled with working material. Proceed according to
Chapter 8.2.5, but use working material instead of ushing agent.