Renfert Twister Mode D'emploi page 26

2.4 On / Off
The appliance is switched on and off at
the switch (D, Fig. 17).
The mixing parameters last used will
reappear in the display when the appli-
ance is switched on. The factory settings
will appear the first time the appliance is
switched on (see section 2.2).
2.4.1 S
TANDBY MODE
The appliance will go into standby mode
if no button is pressed or it stands idle for
more than three minutes.
The display will be dimmed when this
happens.
To leave the standby mode:
• Press any parameter key.
• Turn the control knob.
• Press the control knob.
• Couple the mixing bowl to the appliance.
The mixing parameters last used will reap-
pear in the display.
2.5 Setting Mixing Parameters
Procedure for changing a mixing param-
eter:
1. Press parameter key (Fig. 19a).
• The parameter key symbol is shown
in the display.
• The parameter value is displayed in
large-scale characters.
2. Turn the control knob to change the
value (Fig. 19b).
The new value is saved immediately.
There is no need to press any key to con-
firm the change.
In initial state the mixing time is
always displayed in large-scale
characters and can also be changed
directly without pressing the param-
eter key.
TIP - Setting the Vacuum:
Tests with various investment materials
have shown that the best mixing results
(smooth, homogeneous casting results)
are obtained at the maximum vacuum
setting.
EN
As a rule, this also applies to plasters.
In individual instances, independent
tests have shown that - under extreme-
ly high vacuum – the partial pressure
in the mixing bowl can sink to a point
where bubbles due to boiling can form
in certain plasters.
Then reduce the vacuum setting.
2.6 Mixing Process
Always read the safety data
sheets supplied by the manufac-
turers when mixing investment
materials!
Wear the appropriate personal
protective equipment as and
when required!
Observe maximum mark on mix-
ing bowl.
Do not fill the mixing bowl over
the maximum mark. This limit
is valid for powders and liquids
measured before mixing.
If the mixing bowl is over-filled
the suction filter system can
become soiled.
Attempting to mix small quantities
in large bowls will result in inad-
equate mixing.
1. Set mixing parameters as instructed by
the manufacturer.
2. Select an appropriate mixing bowl size.
3. Mix powder and liquid as instructed by
the manufacturer.
Allow plaster to sit for approx. 15-20 sec.
4. Using a spatula, lightly mix the materi-
als together (Fig. 20).
5. Install the appropriate paddle (Fig. 21).
Make sure the bowl rim (Fig. 22a) and
cover rim (Fig. 22b) are clean.
6. Couple the mixing bowl to the appli-
ance (Fig. 23)
• When the bowl is added the motor
runs briefly in order to engage the
paddle.
7. Vacuum generation starts automati-
cally.
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