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SERVICING THE MEMBRANE ELEMENT
NOTE: Determining how long membrane elements will
last is nearly impossible. Normally, replacement is
necessary whenever the product water production
decreases by 20% at the same operating pressure, or when
the TDS exceeds acceptable level.
MEMBRANE ELEMENT REPLACEMENT
1.
Close the manual feed water shut-off valve.
2.
The Reo-Pure System will automatically shutdown.
3.
Disconnect the main power supply.
IMPORTANT – Before performing any maintenance on
your Reo-Pure System, always disconnect the power
supply!
4.
Remove the upper clamp from the pressure vessel.
5.
Carefully remove the top end cap from the membrane
pressure vessel.
6.
The membrane element may come with the end cap.
If so, carefully remove it.
7.
Remove the membrane element from the vessel by
pulling on the product water tube. Normally this can
be done by hand. If additional leverage is required,
carefully use pliers.
NOTE: Observe the arrow on the vessel that shows the
direction of flow through the membrane vessel. If the
arrow on the vessel points down, then the brine seal on the
membrane element should be at the top of the vessel.
8.
Check internal and external o-rings on the end caps.
If they are worn or damaged, they will need to be
replaced.
9.
Install the new membrane element in exactly the
same manner as it was removed.
NOTE: The brine seal end must always face the
pressurized feed inlet to the membrane vessel. Please see
illustration for more information.
10. Insert the top end cap. Be careful to keep the rubber
o-rings in their grooves while inserting the end cap.
Use food grade silicone or glycerin to lubricate the o-
rings. Do not use a petroleum-based product such as
Vaseline.
11. Replace the upper clamp.
IMPORTANT – Divert the product water to drain for
approximately 30 to 60 minutes after changing a
membrane element. This is done because membrane
elements are treated with a preservative solution and
should be thoroughly rinsed clean of any remnants. This
can be done either by installing a 3-way valve in the
product water line, or by disconnecting the pipe or
hose/tube from your storage tank.
CAUTION – Be sure your product water
line is disconnected from your storage tank
before restarting the system. Divert product
water to drain for 30 to 60 minutes.
12. Reconnect the main power supply.
13. Turn on the feed water supply using the manual inlet
shut-off valve and allow the system to fill with water.
14. Check for leaks.
15. Open the reject water valve and flush the system for
2 to 3 minutes.
16. Close the reject water valve and divert the product
water to drain for 30 to 60 minutes.
17. After diverting to drain for 30 to 60 minutes, you
may now reconnect the product water line to your
storage tank.
LP3-500 Owner's Manual | 12
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