Use and Care Manual

Stage-3 Membrane (MEM-90)

Stage-4 For model RO-CTOP: Post-Carbon Filter (CT-24CAB)

For model RO-CTOP-PH: pH Filter (FI-PHPLUS-QC)

Change every 2-3 years

Change every year

If Stage-1 & Stage-2 pre-filters are changed regularly, the Stage-3 Membrane can last 2-3 years depend-

ing on your input water’s quality. The Membrane needs replacing when: The TDS (total dissolved solids)

level in the pure water starts to increase (detected by a TDS meter from APEC), or when the water taste

quality starts to decline. A lost in water flow/pressure can be an indication of clogged filters/membrane

also.Replace the Membrane as follows:

Disconnect tubing from the Membrane-Housing

Cap. Remove membrane-housing cap by turning

it counter-clockwise. Pull out the old membrane

using pliers. Then insert the new membrane into

the housing using pliers. Make sure the end

with “2 small black rings” goes in first as

shown (See Figure D1 & D2).

Close the cap on membrane-housing.

Reconnect tubing to the cap.

Let RO run for 10-15 minutes to flush out the new membrane – discard the output water.

When done flushing, the pure water is ready for use.

Figure D2

Figure D1

(Front View Of System)

Step 2.

Step 3.

Step 1.

Locate the Membrane-Housing

(with “Filmtec Membrane” label on it.)

Figure E

Front View

Follow the same procedures as for changing the

Stage-2 carbon filter.

Disconnect tubing from Point J & Point K. To

remove the Pure water output line at Point K,

use a pair of pliers and remove the tubing lock

(red clip) (See Figure E).

Snap on the new filter onto the 2 holding clips.

Make sure the Flow direction “arrow ” on

the filter is pointing towards the right direction

(See Figure E). Re-connect tubing to both ends

of the new filter.