Ss Brewtech Jacketed Unitank, Руководство пользователя

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PRIOR TO USE
Page 12
Contrary to popular belief, stainless steel is not truly stainless. It is corrosion-resistant, but not corrosion-
proof. The ability of stainless steel to resist corrosion is dependent upon its protective oxide layer. This
layer must be periodically re-introduced by cleaning the stainless steel to remove any iron and surface
contaminants and allowing the surface to react with oxygen in the atmosphere. We recommended
passivation of your tank upon delivery, as well as setting a routine schedule for re-passivation. Your
basic procedure would be to clean the vessel with an acid solution (nitric, phosphoric, citric, etc.)
to remove iron or other contaminants from the surface of the stainless steel, then lightly rinse and
allow to air dry so that oxygen can react to form the protective oxide layer. We recommend contacting
a chemical provider to obtain the best practices for passivation of 304 stainless steel based on the
chemical being used.
Before use, it is important to ensure that your analog thermometer and PT100 thermo-probe are properly
calibrated and consistent with one another. There are several ways of calibrating a thermometer and
thermo-probe, but the simplest way is to use an ice-water mixture. When you insert your thermometer
and/or thermo-probe into an ice-water mixture, they should read 32º F (0º C). There is a small screw
on the back of the analog thermometer that can be adjusted to correct for error, if any. Set an off-set on
your digital controller temperature readout to correct for any thermo-probe error.
*NOTE: In order to use your PT100 thermo-probe, you will need some type of digital temperature
controller. We recommend our FTSs Pro Modular Temperature Controller for ultimate compatibility. The
FTSs Pro Modular Temperature Controller and user guide can both be found at www.ssbrewtech.com .
PASSIVATION
CALIBRATING YOUR THERMOMETER / THERMO-PROBE