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Replacement of Membranes - All RO Units
Step 1: Open dispenser/faucet. Lock handle in the up and open position and allow water to flow. Water will eventually
only drip then almost come to a stop. Now go to Step 2. Keep dispenser/faucet open until instructed to close.
Step 2: When water has come to a stop or very slow drip, Close inlet water supply to the system.
Step 3: Disconnect the water feed tube from the top of the membrane housing or the membrane housing cap (see the
end of the membrane housing with one fitting). See diagram below.
CAUTION:
Step 4: Open membrane housing by turning membrane housing cap counterclockwise. Remove the old membrane.
NOTE - DIFFERENT STYLES FOR THE REMOVAL OF MEMBRANES:
Membranes come standard with a Nipple with Two (2) O-Rings which inserts and seats into the back of the
membrane housing (see diagram below). Membranes come in two styles for the removal of the membrane from
the housing. Style #1 (pictured in diagram below), may require pliers to remove the membrane. Style #2 is
a threaded insert. Using a common screw, thread in clockwise and pull screw to remove membrane.
NOTE: See optional disinfection procedure of empty unit before replacing any filters, membranes, and/or UV lamp.
Step 5: Place a light coat of food-grade silicone grease or petroleum jelly (not included) on the Two (2) O-Rings and
Black Seal before replacement of the membrane.
Step 6: Insert the new membrane with the Two (2) O-Ring end in and allow to seat (see diagram below).
Step 7: Screw membrane housing cap back on.
Step 8: Re-insert feed water tube into the top of the membrane housing or the membrane housing cap (see diagram).
CAUTION:
Step 9: ONCE NEW FILTERS/MEMBRANE HAVE BEEN REPLACED - CHECK AND FOLLOW ALL APPROPRIATE
STEPS FOR "SYSTEM START-UP AND OPERATION PROCEDURES"
CAUTION:
LOCATION OF
WATER FEED TUBE
AND CONNECTION
PRODUCT TUBE
PICTURED, STYLE #1
PULL TO REMOVE
(NOT PICTURED, STYLE #2
NO NIPPLE, SEE NOTE)
NOTE:
It is recommended that membranes, if possible be tested an-
nually for TDS and changed as needed, based on usage and
local water conditions. All filter housings with filters labelled
"Prefilter", "Sediment" &/or "Carbon" must be replaced once a
year, or as needed, to protect membrane. The quantity and
quality of the water processed affects the life of all filters and
membranes.
www.ewswater.com
FOLLOW PROPER TUBING CONNECTION INFORMATION (Found on Pages 4.1-13&14)
FOLLOW PROPER TUBING CONNECTION INFORMATION (Found on Pages 4.2-13&14)
WATER WILL BE PRESENT WHEN FILTERS ARE CHANGED.
A pan, towel, etc. should be placed under the housings to catch any water.
BLACK SEAL OR
BRINE SEAL
ENSURE PROPER
SEAL OR SEAT WITH
MEMBRANE HOUSING
O: 702.256.8182; M-F 8:30am-4:30pm PST
NIPPLE WITH
(2) TWO 0-RINGS
CUT-A-WAY IN
HOUSING TO VIEW
MEMBRANE INSERT
illustrated quick connect fitting
and proper tubing connection
E: customerservice@ewswater.com
19
PRODUCT WATER
WHITE FITTING WITH
WHITE TUBING
REJECT WATER
GRAY FITTING WITH
BLACK TUBING
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