W9 Manual Page 33 - Revision: 10-06-2023
W9 PM GUIDE
To ensure proper function and effectiveness of Wellsys W9 units, preventative maintenance
must be performed on a timely basis, at a bare minimum of once per year but recommend at
least every 3-6 months. PMs typically consist of filter changes but do also require hot tank
descaling on a yearly basis, especially if not using RO filtration. The filter change schedule is
listed below. DO NOT run the filtration system in the unit before flushing the filters.
It is imperative to regularly change the filters on the Wellsys W9 unit. Changing the filters keeps
the tanks clean and the water tasting fresh. Failing to change filters regularly can also cause
premature degradation of RO filters, which can increase maintenance costs. Refer to the filter
flushing guide for the proper flushing procedure.
Regularly sanitizing the cold tank and descaling the hot tank will also help to improve the water
quality and prevent costly maintenance (or even replacement) of the hot tank. The sanitizing
and descaling procedures are outlined below.
Sanitizing and Descaling
Sanitizing both the cold and hot tanks will help to prevent buildup of Bio-film and will ensure
the best water quality and taste. The procedure for sanitizing is the same for descaling, the
only difference being the solution used, either a sanitizing agent or a descaling solution. The
sanitizing and descaling procedure is outlined below.
1. The unit should already be hooked up to a water supply and power
supply and recently had new filters flushed and installed. Ensure the hot
tank switch on the back of the unit is turned OFF. If these prerequisites
are met, proceed.
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