Naf,
I am installing a pressure
gauge in my panel(by Aerotronics-should be done in a couple of weeks) with a
high/low pressure switch connected to a pair of transducers mounted at the
pump next to the pressure switches. The gauge and transducers were from UMA
and I have included the link below. After years of reading about others'
difficulties diagnosing hydraulic problems, this seemed a worthwhile
expenditure in potential time saved as well as knowledge of what the system is
doing.
Kai Ogston