What is the first step if the RO pressure drops unexpectedly?

When the reverse osmosis (RO) pressure drops unexpectedly, the first step is to check the multimedia filter. This is crucial because a clogged or dirty multimedia filter can restrict water flow to the RO system, leading to a decrease in pressure. By ensuring that the multimedia filter is functioning correctly, you can determine whether the pressure issue is related to the initial filtration process.

If the multimedia filter is blocked, it would impede the delivery of water to the RO unit, adversely affecting its performance. Addressing issues at this preliminary stage helps in maintaining the overall efficiency of the water purification system. Once this step is verified, further investigation into the RO pump, water supply, and RO vessels can be undertaken if the pressure issue persists.