Membrane Replacement - GE E4H-16K Operation And Maintenance Manual

Operations and Maintenance Manual
E4H Series Water Purification Machine
diameter of the membrane housing. Install the clamp halves, and tighten the bolts until the
clamp halves meet.
13. Re-connect any fittings that were removed when disassembling the membrane
housings.
14. Return to step 1 in Section 3.2 in the Start-Up Procedure.

4.7 Membrane Replacement

As time progresses, the efficiency of the membrane will be reduced. In general, the salt
rejection does not change much until two-three years after installation, when operated on
properly pretreated feed water and when routine maintenance is performed. The permeate
flow rate will begin to decline slightly after one year of operation but can be extended with
diligent flushing and cleaning of the machine. High pH feed water and/or precipitation of
hardness can cause premature loss in rejection and even flow rate. The following procedure
is to be followed to replace existing membranes in the machine.
1. Remove the end caps from all of the membrane housings.
2. Remove all of the membranes from the membrane housings in the direction of flow
where possible. If necessary, a membrane can be removed against the direction of flow. A
heavy duty pliers or channel lock pliers may be necessary to pull the old membrane out of
the membrane housing.
3. To re-install replacement membranes, follow Sections 4.6.
Do not operate the machine on water over 85°F (29°C).
NOTE
Do not allow the machine to freeze unless it is totally drained. It
must thaw a minimum of 24 hours before starting.
NOTE
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