Pressure tested -> Shaft seal (original problem) and union joints leak tight -> good!

Approximately 1 gallon of water/glycol was spilled and removed from the system as the result of removing the pump last week.  I noted when adding the make-up glycol today that the closed-loop pressure was only 15 psig (historical normal is 30 psig).  I only added enough to bring the closed-loop pressure up to 20 psig as (i assume) the variable speed drive is operating at <60 Hz these days.