Duplex JET VAC ALPHA Handbuch - Seite 4

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SUMMARY

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2. SAFETY REGULATIONS

The electric supply connection shall be made by a qualified electrician and comply with IEC 60364-1. 
It is recommended that the electric supply to this machine should include either a residual current device that will
interrupt the supply if the leakage current to earth exceeds 30ma for 30ms or a device, which will prove the earth
circuit. 
SAFETY VALVE This machine is equipped with two safety valves, able to ensure the safety of the machine
itself in case other primary control devices are inefficient (due to a fault). Due to the extreme importance of these
components and as not to compromise the safety of the machine, it is recommended to provide to check them
and to substitute them through an authorized service center by 1.500 hours of usage or once a year, starting from
the purchasing date. 
PRESSURE SWITCH This machine is equipped with a pressure switch able to check and to maintain the
pressure under certain pre-set limits (ref. "rated pressure" on the technical label underneath the machine). In
case there would be a steam leak on the lower side of the machine, it means that the functioning of this device
has been compromised and the safety valve has been involved as to limit the boiler internal pressure. It is
recommended not to use the machine, immediately unplug the machine from the
power feeding and call the service centre. 
CALCIUM DRAIN FROM THE BOILER If you are not acquainted with the hardness level of the used
water, it is recommended to proceed with the boiler cleaning (according to the 
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