Dear Dharmendra Sharma , The easy way to find out where excactly there is a leakage is to take a sample of purified (produced) water from each membrane housing outlet. Comparing the TDS or Conductivity measurments, you can find out where the leakage comes from.  After that, you can open only the membrane housing it needs to replace o-rings and/or connectrors. Membrane fitting is very easy. Many people without specific knowledge have done it succesfully. There is only need to have enough space (1.5 m) from each side of the membrane housing.

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Dear Dharmendra Sharma , The easy way to find out where excactly there is a leakage is to take a sample of purified (produced) water from each membrane housing outlet. Comparing the TDS or Conductivity measurments, you can find out where the leakage comes from.  After that, you can open only the membrane housing it needs to replace o-rings and/or connectrors.

Membrane fitting is very easy. Many people without specific knowledge have done it succesfully. There is only need to have enough space (1.5 m) from each side of the membrane housing.