Vermes MDS 358X user Manual.pdf - 第139页
Cleaning 128 VTK - TR -BA- 072e - 1 - User Manua l MDS 358X S eries Step 9 ( cartridge base ) Unscrew the tighte ning scre w with the help of the MDT 327 (c ounter - clockwise). Remove t he tighten ing sc rew an d the ca…
Cleaning
VTK-TR-BA-072e-1 - User Manual MDS 358X Series
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Optional positions
The bayonet fluid box has three different locking
positions (1: -90°, 2: 0°, 3: +90°) in which the valve
can be operated. To open it from locking position
1, turn the fluid box to position a. To open it from
locking position 2 or 3, turn the fluid box to
position b.
Optional (isolation body)
In case you have used an isolation body in your
application, remove it from the fluid box.
Unscrew the two screws for the isolation body
(counter-clockwise). Use the MDT 329 – L-Shape
Hexagon Key.
Step 4 (tappet rod and tappet spring)
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. You can use the MDT 327 -
Multi-Function Tool or the MDT 307 - Adjust Tool
TA Hotmelt Handle (with the correct Bit).
Step 6 (nozzle insert)
Use the thin end of MDT 323, to push out the
nozzle insert from behind.
Step 7 (tappet centering screw)
Unscrew the Tappet Centering Screw BY from the
fluid box (counter-clockwise). Use the MDT 303 -
Nozzle Changing Tool.
Make sure the three pins of MDT 303 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)
Push out the tappet centering piece and the
tappet sealing from the fluid box. Use the thicker
side of tool MDT 323.
Important note!
There is no tappet centering piece, if you use a
2G tappet rod.
Cleaning
128
VTK-TR-BA-072e-1 - User Manual MDS 358X Series
Step 9 (cartridge base)
Unscrew the tightening screw with the help of the
MDT 327 (counter-clockwise). Remove the
tightening screw and the cartridge base from the
fluid box.
Important note!
If you use a Cartridge Base CH, you need to screw
off the Fluid Box Connector Luer Lock first. Use the
open-jawed wrench at the side 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 and
the fluid box body. In case the connector is
clogged, use MDT 327 to screw off the Connector
BY (counter-clockwise). Then pull out the fluid box
body.
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
First, clean the single components in an ultrasonic bath.
– Push a cleaning rod or a fluidic brush through the media carrying channels of all the
components.
– 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.
CAUTION
Damage of O-ring/tappet sealing
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VTK-TR-BA-072e-1 - User Manual MDS 358X Series
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Unless the compatibility between the O-ring/Tappet sealing and the solvent is excellent, do not
insert the O-ring/Tappet Sealing into the solvent.
CAUTION
Damage of components
Place tipped nozzle inserts (e.g. J-, C-, N27-type) in a separate beaker. To avoid damage, do not
place tipped nozzle inserts together with other components in one beaker.
IMPORTANT NOTE
Keep heater connection dry
Make sure that the heater connection stays outside the beaker (see picture), to avoid any fluids
reaching the electronics. (In case you do not use a heater and have the mounting body BY
instead of an MDFH, you can ignore this part.)
– Fill the beaker with an appropriate solvent (e.g. Isopropanol), until all of the parts are covered.
– Leave the components for ca. 15 min inside.
WARNING
High temperature, danger of burns
Be aware of your dispensing medium when setting the temperature, if the dispensing medium is
inflammable. Otherwise, with too high temperatures deflagration might occur. Set the
temperature as low as possible within the effective range.
– Take the beaker with the components out of the ultrasonic bath. Then use tweezers to take
the components out of the beaker.
Next, clean all components by hand.
– For fine purification, you have to clean all components by hand. In general, you should take
special care about those places, which get in contact with the medium or where two different
parts fit together. First, you should clean the nozzle insert, since hardening would cause most
problems here.
INFORMATION
Simpler cleaning