|Hydraulic Filters
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When the element is clogged, the differential pressure indicator displays a red ring.
Once the operating pressure is reached and red has been displayed, it will continue to be displayed until it is reset even if the pump is stopped.
After the differential pressure indicator displays red, press the reset button after the circuit stops operation to reset the display.
When temperatures are low, such as in winter, the viscosity of the hydraulic oil used may increase, and the differential pressure indication switch may mistakenly be activated.
In such cases, wait until the fluid temperature rises after it is warmed up, and reset the differential pressure indication switch before starting the main operation (20°C or higher is recommended).
Note that the replacement differential pressure indicator part numbers differ for each FH□ series.
The FH□ series catalog can be found here. And the FH□ series operation manual can be found here.