Membrane Physical Check - ProMinent DULCOMETER PH-501 Assembly And Operating Instructions Manual

Note: Membrane maintenance (CEB) and recovery cleaning has to be recorded according
to Membrane Cleaning Log Sheet presented in Appendix J of the manual.

7.3.3 Membrane Physical Check

WARNING: A membrane cassette that has been in operation weighs more
than dry membrane cassette before installation.
Failure to comply with the instructions provided in this manual can cause
equipment & property damage or severe personal injury, and will render
the warranty null and void.
To removing membrane module from membrane tank
This procedure is required if the membranes are being inspected as part of routine maintenance
for physical check or being replaced.
Once membrane inspection or replacement has begun, it must be
completed promptly. It is important that the membranes DO NOT DRY
OUT OR FREEZE during this procedure.
1. Confirm that the eStop switch on the main panel is pushed in. Confirm that the Main
Disconnect is ON. Stop the system operations by using the HMI screen button.
2. Empty the MBR tank (TNK-601) via the tank drain valve or recycle back to Aeration Tank
using P-601.
3. Open the MBR tank hatch.
4. Wash remainder of waste water in the tank with reuse water and vacuum out.
5. Install the cassette rails and Disconnect the permeate hoses from the top of the membranes.
6. Slide out the cassette and further clean the membranes.
Membrane module replacement - If membranes require changing verify membrane
modules are secured within the membrane tanks after re-installing the new modules – i.e. verify
wheel chocks are in the correct location and that there is no lateral movement (less than an
inch) of the membrane modules on the wheel tracks in the tank.
7. Remove the membranes from the cassette. NOTE. The membranes are triple stacked. The
bottom membrane has a plug in the bottom opening. Do not remove this plug. Note the
membrane orientations for re-installation. The membranes are joined together with either a
PVC union with two O-Rings on each side OR clear PVC hose and hose clamps.
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