DENTAURUM Polyclav Mode D'emploi page 15

Polyclav – Safety Recommendations and Notes on Maintenance
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The safety valve should be checked regularly during use twice a month by unscrewing the serrated nut
Build-up of lime in the safety valve can prevent it from functioning. Every 6 months, the following test should also be performed:
fill the Polyclav to the rim with water, replace and lock the lid and then pressurize. The safety valve must open between 2.5 – 2.8 bar.
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If the safety valve does not open, unscrew it and clean with vinegar, which will dissolve lime deposits – if necessary, replace the safety
valve.
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Should these precautions prove to be ineffective, the unit must be returned to the manufacturer. On safety grounds, only the complete
unit with matching lid and body should be checked – and if necessary – repaired with spare parts from the original manufacturer only.
We recommend that both the interior and exterior of the unit be cleaned regularly to prevent build-up of corrosion products.
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We recommend that the periods for retesting registered in the EC Declaration of Conformity be adhered to in your own interest.
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– see illustration, page 14.
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