Description Of Operating Modes; Thermal Process For Reducing Bacterial Count; Irrigation Mode; Stimulation Mode - Atmos Variotherm plus Operating Instructions Manual

4.0 Operation

4.5 Description of operating modes

4.5.1 Thermal process for reducing bacterial
count
Purpose:
Reduction of bacteria count in the warm water circuit to
prevent or clear a contaminated system.
Activation:
Occurs each time the unit is switched on.
• Condition for starting the correct thermal process for
reducing bacterial count:
- The irrigation handle must be inserted in the holder
on the side (jet pointing to reverse side of the unit).
ª If not, a warning signal is given (warning also sounds
when the handle is removed during the thermal clean-
ing procedure).
ª Additionally, the error code "F0" is shown (disappears
when handle is returned).
) In the thermal process for reducing bacterial count, hot
water is conducted through the irrigation handle. Please
do not take the handle from its holder or spray water!
) Metal parts of the irrigation handle and of the double-
barrelled hose will be hot! Please do not touch metal
parts during the thermal cleaning procedure!
• During the thermal process for reducing bacterial count,
the temperature display shows a "d" on the first seg-
ment and the remaining time (in minutes) on the second
segment.
• After cooling down to 37 °C, the unit will automatically
switch to irrigation mode.

4.5.2 Irrigation mode

Purpose:
Rinsing of the auditory canal.
Properties:
• Temperature: 37 °C, permanently set.
• Position of the set screw: High (see Fig. 6, page 13).
Activation:
• Automatically after completion of thermal cleaning proce-
dure and taking out the handle or by key (, Fig. 1).
• When the irrigation mode is not being used (handle re-
mains in holder), the Variotherm plus changes to energy
saving mode after 5 min.
• Reactivation of the irrigation mode by taking the handle
out of the holder or activating a key on the temperature
control unit.
• If the 37 °C push button is pressed repeatedly, the heat-
ing is switched off.
ª Water with feed temperature is available.
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4.5.3 Stimulation mode

Purpose:
Stimulation of the vestibular organ.
Properties:
• Temperature: corresponds to the preselected cold or
warm stimulation level.
• Position of the set screw: Low (see Fig. 6, page 13).
• Duration: as preset by the timer.
Activation:
• Initially select the type of stimulation by activating either
the warm stimulation or cold stimulation key (, , Fig.
1) (see section 4.1 for presetting of temperature).
ª Water with the preset temperature value flows to the
handle.
• Wait for 20 seconds.
• Operate the "timer startˮ key.
• Preparation for stimulation:
- Operate unit 15 seconds in holding position so that
the jet can be positioned correctly in the auditory
canal.
) During this period, the water is directed via the handle
into the drain in order to guarantee optimum temperature
stability; optical indication by the flashing figure in the
temperature display.
Do not start stimulation by operating the release lever on
the handle until you hear the audible signal!
• Carrying out the thermostimulation via the set screw on
the handle (, Fig. 4).
• At the end of the stimulation period, a control signal for a
recording unit is issued at the nystagmograph output.
• After stimulation is completed, the unit remains in a hold-
ing position for 15 seconds so that the handle may be
removed from the auditory canal.
ª During this time, water flows into the drain; again, an
optical indication is made by flashing temperature
value.
• Repeated activation of the "timer startˮ key stops timer
operation.
• Second activation of the currently active key deactivates
the corresponding level.
ª Heating is switched off completely.
ª Stimulation with cold water (feed temperature).

4.5.4 Energy saving mode

Purpose:
Reduction of energy consumption.
Activation:
• Activation of key "heating on/off" (, Fig. 1).
ª Heating is switched off.
• After five minutes of non-use of the unit.