Finally got to replace the Bolt filter that has been a pain in my knuckles for some time. Replaced much of the plumbing and reused as many of the system components as possible.
New 2 speed pumps save lots of energy and move water very well. Calcs show this new system will save the owner a few dollars each day and with the decreased cost in maintenance will pay itself off rather quickly.
The fact that the new pumps and filter clean the water so much faster and effectively are key.
The job turned out great, even modified the new timeclock to fit in the old enclosure. The new pumps were moved in such a way that eliminated uneccessary bends and looks much cleaner.
The couple that owns this house are truely wonderful.