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 efficient 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 filter to clean the water before it enters the
dynamometer and engine cooling tower. Install a differential pressure gauge across the filter to determine
when the filter needs cleaning. The water should be filtered to remove 0.004- inch diameter particles [100
microns]. In recirculating systems, a filter 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
