Troubleshooting
If you encounter any problems with your water-cooled system, use the following table to troubleshoot
your problem.
Table 5. Troubleshooting
Problem Solution
Poor cooling performance Contact IBM Service
Reduced water flow Contact IBM Service.
Chemical pump issues (where
installed and used)
Follow procedures that are provided by installer, contact your site
water treatment contractor or local Nalco ofce, or both.
3D TRASAR
®
alarms or operational
issues
Contact the local Nalco ofce.
Discolored water Might be an indication of corrosion and or microbiological issues.
Refresh the water supply.
Slime in flow meter areas Might be an indication of corrosion and or microbiological issues.
Refresh the water supply.
Elevated microbial counts
• For systems of smaller than 75.7 liters (20 gallons), refresh the water
supply.
• For systems of larger than 75.7 liters (20 gallons), add 100 parts per
million (ppm) of Nalco H-550 or Nalco 73500 biocide. Retest the
bacteria content between 24 – 48 hours after biocide dosing. If the
bacteria level is not less than 100 CFU/ml contact Nalco or your
water treatment company.
Fungi Contact Nalco or your water treatment company.
Any other problems Contact IBM Service.
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