SNOWPURE, LLC, 2005-2018
VERSION 3.5 (XL+EXL)
–FEBRUARY 2018
PAGE 68
Appendix #5: XL/EXL Module Heat Sanitization Procedure
Using heat is now a common way to sanitize water systems.
Even small numbers of bacteria are problems for critical water systems like
pharmaceutical USP water, dialysis water, and water for semiconductor
manufacturing. Bacteria are often killed with UV-254, chemicals, and heat. Where
chemical sanitization is undesirable or prohibited, the growth of heat sanitization
processes has been steady.
Most bacteria are killed at 50-60°C, and essentially all bacterial are killed above
65°C.
Therefore, two common protocols have emerged for sanitizing validated high purity
water systems:
72°C for 30-60 minutes
80°C for 15-30 minutes
Both are effective at killing all bacteria (except for strains of temperature-loving
"thermophile" bacteria, which is a long topic in itself).
Therefore, it is important for all water system technology components, like the
Electropure™ XL-HTS and EXL-HTS EDI modules, be stable for multiple cycles well
above 80°C.
The sanitizing procedure consists of slowly circulating water through the EDI system,
and raising the temperature. The EXL-HTS product was designed for rapid heatup.
This is followed by a holding period at sanitizing temperature, followed by a
cooldown.
The Electropure™ XL-HTS and EXL-HTS Series module is designed to be stable to
heat, up to 85°C (185°F). XL-HTS is designed to handle up to 104 heat cycles, or two
(2) years whichever is sooner. EXL-HTS is designed to handle up to 160 heat cycles,
or three (3) years whichever is sooner.
1.
DO
: XL-HTS only: Do check the torque of the module bolts
after each complete heat
cycle
, and re-torque lightly if necessary.
Set torque at 10 ft-lbs maximum (13 N-m)
effective for HTS parts made after May 2012.
New spring washers allow this lower
torque to be effective.
2.
DO
: For XL-HTS raise the temperature from ambient to temperature over a period of 10
minutes. Rapid temperature rise is allowed with EXL-HTS.
3.
DO
: Circulate the hot water through all of the streams (feed, concentrate, & electrode) at
low flow and low pressure.
4.
DO
: Allow 3-8 hours of normal operation (including applied voltage) for the module to
return to high quality equilibrium performance.
5.
DO
: Call or email SnowPure with any questions or observations or concerns. Phone:
+1.949.240.2188. Email:
6.
DO:
Send the data to SnowPure.
DO
: send any product improvement suggestions to
Содержание Electropure EXL Series
Страница 51: ...SNOWPURE LLC 2005 2018 VERSION 3 5 XL EXL FEBRUARY 2018 PAGE 51 Figure 5 EXL EDI Module Drawing Dimensions...
Страница 53: ...SNOWPURE LLC 2005 2018 VERSION 3 5 XL EXL FEBRUARY 2018 PAGE 53...
Страница 54: ...SNOWPURE LLC 2005 2018 VERSION 3 5 XL EXL FEBRUARY 2018 PAGE 54 Figure 8 Manifolding Options...
Страница 60: ...SNOWPURE LLC 2005 2018 VERSION 3 5 XL EXL FEBRUARY 2018 PAGE 60 EC Declaration of Conformity...
Страница 71: ...SNOWPURE LLC 2005 2018 VERSION 3 5 XL EXL FEBRUARY 2018 PAGE 71 Appendix 7 DataFormforElectropure XL EDIModule...