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VTK-VS-BA-015e-A | User Manual MDS 3200+ Series
|
Cleaning
8.4.2
Rinsing with Purifying Agent
After pre-purification by compressed air, residual liquid may still be present inside the fluid
system
(particularly when dispensing high-viscous substances)
. It can only be removed by a
flushing procedure. For this purpose, the following agents may be suitable:
•
Distilled water
•
Ethanol
•
Isopropanol
(IPA)
•
Acetone
WARNING! (Potential chemical reactions)
Before the start of the procedure, carefully read the safety data sheet of the dis-
pensed substance. Ensure compatibility with the cleaning agent. The cleaning agent
itself should not react with any part in contact with the fluid. Consult the manufactur-
er in case of need, especially if aggressive material is intended to be used.
Step 1:
The dispensing process must be completed. The valve is in closed position.
Do NOT switch OFF the control unit.
Step 2:
Separate the compressed-air connection.
−
The pressure must be reduced to 0 bar.
−
Disconnect the PP adapter fitting from the cartridge.
Step 3:
Replace the used cartridge by a new one. The purifying agent can be supplied.
CAUTION!
All of the connectors must be installed and leak-tight.
Step 4:
Reinstall the compressed-air connection as follows:
−
Place the PP adapter fitting on the cartridge. Rotate clockwise, until it latches in place.
−
Connect the PVC hose with the KS4-CK-6 coupler plug to a compressed-air supply. For
this purpose you require a KD4-1/2-A coupler socket.
−
Activate the compressed-air supply.
Step 5:
Place a container underneath the valve, to collect any liquid dripping out. The
container needs sufficient capacity to contain the purifying agent together with
the solved residual liquid.
Step 6:
Initiate the purging procedure by pressing
[F1]
.
Keep the
[F1]
key pressed until the procedure is complete and no more liquid
flows out through the nozzle unit.
INFORMATION! (Automatic closing)
After ca. 2 min the valve closes automatically, in order to protect the actuator.
Alternatively, the procedure can be performed by the RS-232C interface. Use the commands
VALVE:UP and VALVE:DOWN for this purpose.
Step 7:
Separate the compressed-air connection and remove the cartridge.
Step 8:
Make sure the collected liquid in the container is disposed of according to local
regulation.