58
VERSION 10/2018
ORDER NUMBER DOC 2339321
.
7.7. Point the spray gun (preferably without nozzle) into the grounded metal tank
for return product and open carefully.
7.8. Slowly open ball valve of pump A. Be ready to switch from air to flushing agent
and prevent back spray.
7.9. Flush until the hose content has been emptied and clean flushing agent comes
out.
7.10. Close and secure the spray gun.
7.11. Gradually increase pressure in pump A with the pressure regulator until maximum
pressure is reached. Maintain the pressure for 3 minutes and check all connection
points of the A-product circuit for leaks.
7.12. Relieve pressure of A-product-circuit:
– Relieve air pressure in accordance with the operating manual for pump A.
– Slowly open the return valve of pump A. When no further overpressure is
detected, close the return valve again.
– Point the spray gun into the grounded metal tank for return product.
– Release and open spray gun to relieve the pressure. Avoid splashback.
– When no further overpressure is detected, close and secure the spray gun.
7.13. Close product valve by pressing [Stop].
8.
Flushing and pressure tightness test for pump B:
8.1. Open return valve of pump B.
8.2. Slowly open ball valve of pump B.
8.3. Slowly turn up the air pressure on the pressure regulator of pump B. Only turn
up the air pressure until the pump is running normally (approx. 0–0.05 MPa;
0–0.5 bar; 0–7.25 psi). Be ready to switch from air to flushing agent and prevent
back spray.
8.4. Close the ball valve of pump B again as soon as clean flushing agent comes out.
8.5. Close the return valve of pump B again.
8.6. Select component "B" in sub-menu
B
and press [Start].
8.7. Point the spray gun (preferably without nozzle) into the grounded metal tank
for return product and open carefully.
8.8. Slowly open ball valve of pump B. Be ready to switch from air to flushing agent
and prevent back spray.
8.9. Flush until the hose content has been emptied and clean flushing agent comes out.
8.10. Close and secure the spray gun.
8.11. Gradually increase pressure in pump B with the pressure regulator until maximum
pressure is reached. Maintain the pressure for 3 minutes and check all connection
points of the B-product circuit for leaks.
8.12. Relieve pressure of B-product circuit:
