10
Water Quality
The quality of the water used in a dynamometer affects absorber and water pump operation.
Contamination, salt water, or water with a high mineral count can reduce their life and increase
maintenance costs. The load control valve and water seals in the absorber can quickly deteriorate with bad
water. Provisions should be made to prevent the growth of algae and bacteria, as well as corrosion or scale
formation within the equipment. Water system maintenance is essential to ecient operation, consult a
water system specialist to create the proper program to monitor your system.
Filters:
For both open water and recirculating systems, install a lter to clean the water before it enters the
dynamometer and engine cooling tower. Install a dierential pressure gauge across the lter to determine
when the lter needs cleaning. The water should be ltered to remove 0.004- inch diameter particles [100
microns]. In recirculating systems, a lter installed on the return water line back to the supply tank helps
keep particles from the engine and dynamometer from getting into the supply water system.
3.0 System Overview
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