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Cleaning 136 VTK - TR -BA- 171e - 1 - User Man u al MDS 3080 -V Step 3 (cartridge) Unscrew the ca rtridge co unt er - clockwise an d r emove it from the flui d box. If necessa ry, us e the MDT 309 - Cartridge l ock ing p…
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9.4.3 Disassembling of the Valve
CAUTION
No dispensing medium residues
Before demounting the fluid box from the valve, make sure that no dispensing medium is left
inside the system.
Preliminary steps:
– The dispensing process must be completed. The valve is in closed position.
– Deactivate the compressed air supply and remove the Adapter for Compressed Air.
– Switch OFF the control unit and disconnect it from the mains.
– Remove the actuator cable and sensor cable from the valve.
– Detach the valve with fluid box from dispensing robot.
CAUTION
High temperatures, danger of burns
Be careful if you have used the heater with your application. A nozzle heater can reach
temperatures of up to 180 °C. Do not touch this area before it has cooled, since there is the
danger of severe burns. Use heat resistant gloves.
Disassemble the valve as follows.
Step 1 (Adapter for compressed air)
Unscrew and remove the Adapter for Compressed
Air from the cartridge. First, unscrew the
connection counter-clockwise; then pull it off.
Important Note!
Make sure that no medium spills into the machine.
Step 2 (fluid box)
Remove the fluid box with the cartridge from the
valve. Turn the fluid box by 45° and pull it off from
the valve.
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VTK-TR-BA-171e-1 - User Manual MDS 3080-V
Step 3 (cartridge)
Unscrew the cartridge counter-clockwise and
remove it from the fluid box. If necessary, use the
MDT 309 - Cartridge locking pin.
Important Note!
Make sure that no medium spills into the machine.
Step 4 (tappet)
Pull the tappet from the fluid box. Pull the tappet
spring from the tappet rod.
Step 5 (nozzle fixation nut)
Remove the nozzle fixation nut by screwing
counter-clockwise. Use the MDT 327 - Multi-
Function Tool.
Step 6 (nozzle insert)
Use the thin end of MDT 323 - Nozzle Insert –
Squeezing Out Tool TA, to push out the nozzle
insert from the fluid box.
Important Note!
Immediately use a cleaning wire to push through
the channel of the nozzle insert, to avoid
hardening of residue medium.
Step 7 (tappet centering screw)
Unscrew the Tappet Centering Screw BY from the
fluid box (counter-clockwise). Use the MDT 303 -
Nozzle Insert Changing Tool.
The three pins of MDT 303 have to fit exactly into
the three holes of the Tappet Centering Screw BY.
Turn the MDT 303 counter-clockwise while
pressing it down slightly to the fluid box. Combine
the MDT 303 with MDT 327 for a better leverage.
Step 8 (tappet sealing and tappet centering
piece)
Disengage the tappet centering piece and tappet
sealing from the fluid box. Use the thicker side of
tool MDT 323 (as shown) or the thicker end of the
MDT 328.
Important Note!
When using a 2G Tappet rod, you do not need a
tappet centering piece.
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VTK-TR-BA-171e-1 - User Manual MDS 3080-V
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Step 9 (cartridge base)
Unscrew the tightening screw with the help of the
MDT 327, rotating counter-clockwise. Remove the
tightening screw and the cartridge base from the
fluid box.
Important Note!
There are two types of cartridge bases: Cartridge
Base CH (without integrated luer lock) and
Cartridge Base CHI (with integrated luer lock). If
you use a Cartridge Base CH, you need to screw off
the fluid box connector Luer Lock. Unscrew it
(counter-clockwise) with the open-ended wrench
of the MDT 327 (hexagon screw size M8).
Step 10 (O-ring)
Remove the O-ring from the fluid box body. Pull it
off carefully with a pair of tweezers. Be careful not
to damage the O-ring.
Caution!
You could omit this step, only if the solvent you
use is compatible with the material of the O-ring.
Unusual (connector BY)
Usually you will not remove the Connector BY
from the fluid box body. In case the connector is
clogged, use MDT 327 to screw it out (counter-
clockwise; for newer revisions of the Connector BY
you can also use a hexagon key 2.5).
Tab. 29: Disassembling of the valve
CAUTION
Damaged tappet sealing
Only use the tools recommended by VERMES. Do not use a sharp tool to press the tappet sealing
from the fluid box. It could cause damage to the tappet sealing, which might lead to a leakage.
9.4.4 Fine Purification
Preliminary steps:
– Push a cleaning rod or a fluidic brush through the media carrying channels of all the
components.
First, clean the single components in an ultrasonic bath.
– Place a beaker in the ultrasonic bath. Make sure it is large enough.
– Place the nozzle insert, tappet sealing, tappet centering piece, cartridge base, tightening
screw, nozzle fixation nut and the fluid box body in the beaker.