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7
www.haskris.com
776 North Oaklawn Avenue, Elmhurst, Illinois 60126 USA ph: +1-847-956-6420 | fx: +1-847-956-6595 | email: service@haskris.com
Operation and Maintenance
Haskris LX-Series, R-Series, WW-Series, OPC-Series
Section 6: Water Quality and Treatment – Indoor Units
Fig. 2
Section 6.1: Maintaining Water Quality
• Periodically inspect the tank to make sure that the water is clear and that there has been no
accumulation of debris.
• Water should be drained and replaced regularly, once or twice per year at a minimum, in order to
maintain water quality.
Section 6.2: Flushing the System
• Flush the system when biological growth, signicant pH change, or signicant debris
accumulation is apparent.
Leaving the unit connected to the application will ush the entire system. Check with
the original equipment manufacturer (OEM) to conrm that hydrogen peroxide is
approved for the application. If hydrogen peroxide is not approved, disconnect
the application, and ush only the unit.
• In order to ush only the unit, connect a short hose directly from the Supply Connection to the
Return Connection. See Figure 1 and 2.
Flushing Procedure
1. Add 1 pint (0.5 L) of 3% hydrogen peroxide per every 15 gallons (57 L) of water to the tank.
2. Circulate the solution for 20-30 minutes.
3. Use the drain hose to drain the system.
4. Rell the system with clean, potable, distilled water.
5. Repeat as necessary to fully ush the system.
Section 6.3: Additives
• Water absorbs CO2 from the atmosphere. This reduces pH over time. Add sodium bicarbonate to
raise pH if needed.
• If biological growth persists even after regularly changing the water and ushing the system, use
laboratory/food grade (99% pure) propylene glycol to create a 10% solution.
• Haskris recommends that additives be used only as a means of last resort.
Fig. 1
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