IONTECH
®
IT-DS EDI Modules
manual should contain log sheets more appropriate for your particular system. However, the items
in bold must be filled out to maintain module warranty.
4.1.2 Periodic Maintenance
Perform the following tests at least once every six months. Check the Troubleshooting portion of this
Section for any recommendations that are not listed below.
Check for any water leakage from the module. If leakage is observed, see the
Troubleshooting subsection for possible solutions.
Closely inspect the module for any buildup of salt on the spacers, endblocks, or
endplates. If salt buildup is apparent, turn off power and rinse salt from the module.
Periodically tighten all electrical connections.
Check torque on module bolts per section 3.2
4.2 Specific Maintenance Guidelines
Periodically, the IT-DS module may need cleaning or sanitization. Cleaning the module removes
scale and other resin/membrane foulants.
Before starting any cleaning or sanitization procedure, see section ?? for
recommended cleaning solutions and use. Ensure that all necessary
chemical material safety standards are followed.
Do not run cleaning or sanitization solution through the IT-DS modules when
DC power is applied to the modules. Make sure that DC power is OFF
4.2.1 Cleaning Circumstances
The module may need CLEANING if:
• Product(dilute) differential pressure increases by 50% without a change in temperature
• Reject(concentrate) differential pressure increases by 50% without a change in
• Product quality declines without a change in temperature, flow, or feed conductivity, or
• The module's electrical resistance increases by 25% without a change in temperature.
The above factors may indicate module fouling or scaling. Contact your Local Service Provider to
determine if the module needs cleaning or for the best cleaning procedure. These operational
circumstances can be noted through periodic reviews of module trends using the daily operational log
4.2.2 Sanitization Circumstances
The system may require periodic SANITIZATION if the product water calls for low levels of
bacteria (a user specific requirement). Through the use of electrical current to drive ions into
dilute and concentrating compartments, the EDI module establishes a bacteriostatic
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