A 5 Preparing For Operation - KaVo EWL 5837 Operating Instruction

A 5 Preparing for operation

- Switch on the main switch (Vacuum – Mixing)
- Open the air supply inlet.
When first using the unit, the vacuum generation must be set using the vacuum regulator.
The recommended input pressure should be at least 5 bar.
The control knob is located under the manometer.
Slowly open the valve so that the indicator moves from the zero setting into the green area.
The best vacuum is not reached with a fully-open valve – a medium setting must be found.
If the pressure relationship changes then it must be re-adjusted.
• Should a lower pressure be required, first switch off the unit (to ventilate), as the pressure in the bowl is held constant by a non-return
valve.
• Turn the regulator down, and then switch on the pressure.
• Finally set the desired pressure in accordance with the manometer indicator by turning the regulator respectively higher.
• If the green area in the manometer display is not reached when adjusting, then there is insufficient supply pressure to the unit.
• The compressed air supply must be checked (see also A 4.2)
• If the unit is not to be used for a lengthy period, turn off the compressed air, and disconnect the machine from the electrical supply.
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EWL 5837