W.Tech RAA Series Installation And Maintenance Manual - page 5
Pag 3
1.6
Casing and water collection basin
The body of the unit is manufactured in “sendzimir” galvanised steel covered with 300 g/m
2
zinc layer. As a standard, a minimum 80µ
complete paint of epoxy-polyester layer is applied on each side of the panels. The application is done by electrostatic process,
completed by a further one hour stop in to the oven. This is giving a considerable resistance against water corrosion, ultraviolet rays
and other atmospheric elements.
This painting procedure is internally named W-COAT® and is given as standard protection on all products manufactured W-Tech.
The lower body of the casing forms the cold water basin. A minimum 2% slope is granted, in order to naturally flow water out of it. On
one side of the basin, a stainless steel anti cavitations suction filter is provided to protect the re-circulating pump that is installed
outside the basin.
In the water basin, the following standard connections are provided:
•
Make up water with float valve
•
Overflow
•
Drainage
Other connections could be provided in accordance to the additional option element are possible to fit. For a quick review and not
limited to, we can mention:
•
Electric heater (to avoid water freezing in the basin in winter time)
•
Minimum water level switch for heaters (to protect electric heater to work uncovered by water)
•
Minimum water level switch for pump (to protect re-circulating pump to work without the necessary water level)
Full list of options are listed in the technical sheet.