A7 Plus – OPERATOR'S MANUAL
Use distilled water only. For enhanced hygiene, it can be
added with 600 parts per million (ppm) of hydrogen
peroxide using 20 ml of Peroxy Ag+ per litre of distilled
water, or oxygenated water (20 ml of 3% oxygenated
water per litre of distilled water).
• Fit tank back in place by turning it counter-clockwise.
Make sure that tank is duly fastened.
• Touch icon button or press button to enable the S.H.S. system
again and confirm the filling procedure has been completed
successfully.
Check that icon (A) appears on console display
If you are going to be absent from the surgery for long
periods of time (holidays), completely empty the tank (a)
before leaving.
Tank cleaning.
We recommend cold sterilising tank only at regular intervals (at least once
a month) using a peracetic acid based product and proceeding as follows:
• remove tank from dental unit and drain it completely,
• prepare the solution of the peracetic acid based product by following the
instructions given by the manufacturer,
• fill tank to the brim with the peracetic acid solution,
• leave the peracetic acid solution inside tank for the time recommended
by the manufacturer,
• drain all peracetic acid solution from tank,
• rinse tank with distilled water,
• fill tank with distilled water, if necessary after adding the above-indicated
substances,
• fit tank back in place inside dental unit.
7.3. W.H.E. SYSTEM (WATER HYGIENIZATION EQUIPMENT)
The W.H.E. system ensures a safe, physical, separation of the dental
unit water system from the water mains thanks to a water free fall section
(in compliance with EN 1717).
In addition, system continuously delivers hydrogen peroxide inside water
circuit with a final concentration inside ducts of 0.06% (600 ppm), which
is suitable to carry out bacteriostasis.
To this end, the use of PEROXY Ag+ (CEFLA s.c.) is recommended;
nevertheless, also 3% oxygenated water can be used.
Description of the system.
The W.H.E. system is positioned inside the connection box and is always
active.
In addition, system features a tank (a) positioned inside the water unit
and suitable to contain approx. 590 cc. of oxygenated water.
A special icon ( G ) signals on dentist's console display that the WHE
system is working.
the W.H.E. system is automatically disabled when the S.H.S.
system is enabled (if installed).
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