!
If the carrier air pressure is to
high, there will be a problem with
the atomization. The lubricant particles
would be too fine and may keep sus-
pended in the air.
6.2.2 System bleeding
To correctly bleed a VTEC unit, first bleed the
unit itself and the bleed the micropumps.
Bleeding the unit
• Unscrew and remove the screw plug,
which is closing the lubricant duct of the
last module of the VTEC unit.
6.2.3 Neutralizing the micropump
delivery
A nozzle can be switched out at any time
without disturbing the good function of the
other nozzles fed by the VTEC unit.
Procedure
• Switch off the carrier air flow. Therefore
turn the air pressure regulator fully to the
right (air flow reduced to 0).
• Switch off the lubricant flow. Therefore
adjust the micropump flow rate to 0 (with
the ‘0’ metering ring, or turn the thumb
wheel fully to the left).
with the air pressure regulator. With a higher
flow rate, you get a finer atomization of the
lubricant, and the lubrication is then more
homogeneous all over the surface to be
lubricated.
• Feed the unit with lubricant until it comes
out without air bubbles.
• Put back and tighten the screw plug.
Bleeding the micropump
• Set all the micropumps to their maximal
flow rate.
• Let the micropumps operate unit lubricant
is coming out from the nozzles.
Fig. 10
Screw plug closing
the lubricant duct.
Remove it to bleed
the unit.
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