Troubleshooting
SDS 200 - SDS 350 11
Chapter 4 MAINTENANCE AND ALARMS
4-1 MAINTENANCE
MAINTENANCE SCHEDULE
What? When?
Replace Vent Filter (to be ordered separately) At the same time than the Progard Pak.
Fill the overflow with acid + pH indicator When the level of acid drops.
Sanitization of reservoir Contact Millipore SAS for an adapted sanitization protocol.
SANITARY OVERFLOW DEVICE
The SDS Overflow Device should be filled with water plus a germicidal agent. This prevents bacteria from growing in the Overflow
Device. One way to do this is to fill up the Overflow Device with an acidic solution. The instructions below provide information on
how to do this.
1. Make a Sulphuric Acid solution of pH 2 (equivalent to Normality 0.01 N). Add some pH indicator so a colour change can be
seen if the pH rises to a value such as 4. This will indicate that it is time to renew the acidic solution in the Overflow Device.
An indicator such as Methyl Orange can be used.
2. Locate the overflow device. Locate the red plug near the top of the Overflow Device.
3. Remove the red plug.
4. Inject some of the acidic solution into the Overflow Device. Replace the red plug
Acidic solutions can be dangerous if spilled on your skin or if it gets into your eyes. Wear eye protection
and wear gloves and other appropriate safety equipment while handling acid
SANITIZATION OF RESERVOIR
Contact Millipore SAS for an adapted sanitization protocol.
4-2 TROUBLESHOOTING GUIDE
All the displayed messages for the Maintenance and Alarms are described in the Water System User Manual.
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