The Clogging Indicator is a special feature mounted on the filter pressure check points and acts like a "traffic light". When the pressure differential across the screen reaches a pre-set value of 7 psi (0.5 bar). The red button of the Clogging Indicator pops up to visually indicate that the filter needs to be cleaned.
AMIAD FILTRATION SYSTEMS, ARKAL, FILTOMAT, SIGMA
Pop-up red button filter clogging indicator.
Amiad Arkal Netafim Filter Clogging indicator, advised to clean the filter when a Δ pressure of 0.5 bar [7 psi] occur.