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Today we will discuss:

Hydraulic Accumulator Bleed Down Circuit

An accumulator circuit should be available for automatically unloading the accumulator when the system is shut down. This is done by have a spring offset, solenoid operated 4 way valve, that can be converted to an open 2 way.

In the diagram, the solenoid of the converted 2 way valve can be revitalized when the electric motor is started. It blocks the flow thru the valve and lets the accumulator charge.

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