Purging - Graco BDS Instructions-Parts List Manual

Purging

To purge the valves or the entire system, follow the
instructions below.
Purging the Valves
You may need to purge the valves for a number of
reasons, such as changing materials, performing
maintenance on a fluid component, or before extended
shut down of the system. To purge the valves, follow
the instructions below:
1. Identify the valve name and supply pump for the
valve you want to purge.
2. Place a container under the selected valve to catch
the material.
3. Remove excess material from the supply pump.
4. Safely shut down the supply pump, following the
instructions provided with the pump.
5. Place an adequate supply of flush solvent into the
pump feed container.
6. Safely restore pressure to the supply pump.
7. Press Manual Cntrl on the Main Operating
Screen.
BATCH
DISPENSE
SYSTEM
Run Recipe Setup
Manual Cntl Scale Setup
18 309279
Operation
8. Press the Valve # arrow and press the number that
NOTE: To open the valve, you must increase the valve
air pressure as instructed in the following step.
9. Press Change Valve Psi. Type a new value in the
10. The new value displays under Change Valve Psi
NOTE: The valve will remain open until Close Valve is
pressed or will close automatically after 30 seconds.
11. If the valve closes automatically before the line is
Clean Screen
Purging the System
Exit
To purge the system, repeat the valve purging proce-
dure above for each of the material valves.
corresponds to the valve or material line that you
are purging. Then press Open Valve.
Manual Dispense
Select Valve to Dispense/Open
Change Valve Psi
Valve #
45
Current Valve Selected
Valve #
Valve Name
Open Valve Close Valve
text box or use the up arrow to increase the value.
Then press OK.
Setpoint: MAN VALVE OPEN
Value
Current Value _________
New Value
Default
OK Skip
on the Manual Dispense Screen. Do not press
Close Valve until only clean solvent flows from the
valve.
completely purged, press Open Valve and repeat
the process as needed.
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