Installation Guide UNO UL 110v V1.1
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8. Scale management<br />
Scale management is recommended on DDC Dolphin Ltd macerators in exceptionally hard water<br />
areas where scale is known to cause issues cold water system. Approximately 70% of the water<br />
used throughout the world is naturally hard, meaning it contains a high mineral content, including<br />
calcium as well as various other salts. Calcium deposit build up can have detrimental effect on<br />
pipes, valves, spray heads and other devices within the machine. Please note components<br />
which fail as a result of scale deposits are not covered under warranty.<br />
Hardness Rating<br />
Slightly Hard Moderately Hard Hard Very Hard Extremely Hard<br />
Grains per gallon<br />
(gpg)<br />
< 1.0 1.0 to 3.5 3.5 to 7.0 7.0 to 10.5 10.5 ><br />
Milligram per Litre<br />
(mg/L)<br />
< 17.1 17.1 to 60 60 to 120 120 to 180 180 ><br />
It is important to check the water hardness prior to installation of the machine. Chemical treatment<br />
of the incoming water supply helps to manage and control the build-up of scale. DDC Dolphin Ltd<br />
offers a suitable and safe solution to use with our range of macerators.<br />
DDC can offer assistance and advice to help identify the water hardness in your country/region.<br />
Copyright © 2015 DDC Dolphin Ltd Page 31 of 36 November 15 IG<strong>UL</strong>-<strong>UNO</strong>-<strong>V1.1</strong>
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