APEC ESSENCE RO Series - User Manual

APEC ESSENCE R.O. Systems Filter Change Instruction
Changing Stages-1, 2, 3 Pre-Filters: (should be changed at least every 6-12 months)
1) Turn OFF cold water supply to RO system by turning the needle valve stem to the right until it stops. Turn OFF the tank ball
valve by turning the blue handle 90 degrees. Turn on RO faucet lever briefly to relieve the built-up pressure inside the RO
system. This will make opening the housings easier.
2) Open housing: Have the RO standing upright. Slip the plastic wrench onto the #1 housing. Looking down from a top view,
you should open the housing turning clockwise. If necessary, lay RO down on the floor to get a better leverage. If the
housing is too tight, use a hammer and gently tap on the wrench handle to help turn the wrench.
3) Discard 3 used filters, wash housings with mild soap, rinse off. Put 3 new filters into their respective housings: sediment filter
in stage-1, carbon block filters in stages 2 & 3.
4) Close up the housings. Make sure each housing has a black O-ring in the thread groves. Use wrench to tighten each
housing.
5) Remember: Turn ON the cold water supply and OPEN the tank valve after finished changing filters!
6) Check for leaks!
After Taking the housings off, take out the dirty filters and put
the new 3 pre-filters in. Remember, Stage-2 and Stage-3 are
the same carbon filters.
Fig.A
Changing Stage-4 Membrane: (should be changed every 2-3 years)
1) Turn OFF the cold water supply to RO system. Turn OFF the tank ball-valve. Turn on RO faucet lever briefly to relieve the
built-up pressure inside the RO system. This will make opening the housings easier.
2) See Fig. B. Locate the Membrane housing on the system (labeled “Membrane”). Remove the RED or WHITE tubing from
the housing’s cap at point D. For Quick Connect fitting, push IN and hold down on the collet ring square against the
fitting. With the collet held in this position the tube can be removed. For threaded fitting, unscrew the plastic nut (not the
L-shape fitting) and pull out tubing. Open up the cap (turn counter-clockwise). Remove the used membrane. Discard.
Insert the new membrane using a pair of pliers. Push membrane into housing tightly. Avoid touching the Membrane with
your hands to prevent contamination!
3) Important! Make sure the “double-ring” end of the membrane goes into the housing first as shown in Fig. A. above. The
membrane cannot filter water if it’s inserted in the WRONG direction!
4) Close the housing cap. Reconnect the RED or WHITE tubing to the cap. Turn on the cold water supply and open the tank
valve. Let the RO system run to re-fill the tank (takes about 2-3 hours).
5) Check for leaks!
6) Drain the first tanks of water (through faucet) to flush out the new membrane! The 2nd tank of water is ready for use.
Correct direction

APEC ESSENCE RO Series Specifications

General

Brand	APEC
Model	ESSENCE RO Series
Category	Water Filtration Systems
Language	English

Summary

Changing Stages 1, 2, 3 Pre-Filters

Prepare System for Filter Change

Turn off water supply, close tank valve, and relieve pressure by opening RO faucet.

Open and Clean Housings

Use wrench to open housings clockwise. Discard old filters, wash housings with soap, and rinse.

Install New Pre-Filters

Insert new filters: sediment in Stage-1, carbon block in Stages 2 & 3.

Close Housings and Restore Water

Ensure O-rings are in place and tighten housings. Turn on water supply and tank valve.

Check for Leaks

After restoring water, carefully inspect all connections for any signs of leaks.

Changing Stage-4 Membrane

Prepare for Membrane Replacement

Turn off water supply, close tank valve, and relieve system pressure.

Disconnect Tubing and Open Housing

Remove tubing from membrane housing. Open the housing by turning counter-clockwise.

Replace Membrane Filter

Remove old membrane. Insert the new membrane with the double-ring end first.

Reconnect and Flush System

Close housing, reconnect tubing. Turn on water and drain first two tanks to flush.

Changing Stage-5 or 6 Carbon TCR Filter

Disconnect Tubing from Old Filter

Push and hold the collet ring to disconnect tubing from the filter for specific models.

Sanitize Filter Ports

Rinse Tee fitting ports and the new filter's open port with mild bleach solution.

Install New Carbon Filter

Attach the new filter, ensuring the flow arrow points correctly. Reconnect tubing.

Final Leak Check

After installation and reconnecting, perform a thorough check for any leaks.

Connecting New Filter for Specific Models

ROES-50 & ROES-PH75 (Stage-5)

Attach new filter, align flow, reconnect tank tubing and output tubing to correct points.

ROES-UV75 (Stage-6)

Attach new filter, align flow, and reconnect tubing back to the new filter points.

Verify Connections and Check Leaks

Ensure all tubing connections are secure and check for leaks after installation.

Changing Stage-6 PH Filter (ROES-PH75)

Prepare for PH Filter Change

Turn off water supply, close tank valve, and relieve system pressure.

Disconnect Tubing and Remove Old Filter

Remove outlet tubing at P, then inlet tubing at O. Remove and discard the old filter.

Install New PH Filter

Remove end plugs from the new PH filter. Connect tubing to points O and P, checking flow.

Changing Stage-5 UV Bulb (ROES-UV75)

Disconnect Power and Transformer

Unplug the light transformer. Disconnect the transformer and UV light adaptors.

Remove and Replace UV Bulb

Use a flat screwdriver to gently extract the old bulb. Insert the new bulb securely.

Reconnect Power

Reconnect the 2 adaptors. Power the transformer to complete the replacement.