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ULTIMATE
REVERSE OSMOSIS SYSTEM
INSTALLATION INSTRUCTION
& OWNER'S MANUAL
Ver 3.1
All Rights Reserved © APEC Water Systems

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Do you have a question about the RO-90 and is the answer not in the manual?

Questions and answers

David Carney
March 28, 2025

How to get more pressure from my ro cannister

1 comments:
Mr. Anderson
March 28, 2025

To increase the pressure from the Ultimate RO-90 canister, you can check and adjust the air pressure in the storage tank. The 4-gallon tank should be pre-charged at 5 psi, and the 14-gallon tank at 7 psi. If the pressure is too low, use an air pump to add air to reach the recommended psi when the tank is empty. Also, replacing an old membrane can improve water pressure, as a clogged membrane reduces flow.

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Summary of Contents for Ultimate RO-90

  • Page 1 ULTIMATE REVERSE OSMOSIS SYSTEM INSTALLATION INSTRUCTION & OWNER’S MANUAL Ver 3.1 All Rights Reserved © APEC Water Systems...
  • Page 3 Please keep this Owner’s Manual for future reference. It contains useful information on how to maintain and care for your APEC Reverse Osmosis water filter system. TABLE OF CONTENT Installation: Preparation ..............page 1 Filter housings assembly ..........page 5 Feed water connection ............
  • Page 4: Before Installation

    Please read and become familiar with instructions and parts needed before proceeding with the installation. (This manual is constructed for standard APEC Ultimate RO System. For RO-PH90, RO-PERM and RO-PUMP system installation, please refer to the included addendum.) BEFORE INSTALLATION: Inspect the system: Please take the system and all the components out of the box.
  • Page 5 Components included with the RO system: Make sure you have all these parts before starting installation. 1 RO system head 3 Pre-filters in 3 Housings 1 Storage tank with pre installed membrane Installation kit includes: 1 Drain saddle for waste water 1 Faucet with 1 Feed water adaptor washers and nuts...
  • Page 6 Component Itemization: Sediment pre-filter and housing (1 -stage filter) Carbon block pre-filter and housing ( 2 -stage filter) Carbon block pre-filter and housing ( 3 -stage filter) Membrane and housing (4 -stage filter) In-line carbon filter (5 -stage filter) Storage tank Tank ball valve ASO –...
  • Page 7 There are 2 types of fittings provided for connecting the system Fitting Types: 1. Quick-Connect (QC) fitting: (no insert, sleeve, or nut Most of the fittings on the RO unit are this type. Fig. 1A Fig. 1 How to Connect: - See Fig.1.
  • Page 8 THERE ARE TWO PARTS TO INSTALLING THE RO SYSTEM: Part I. Assemble the filters and housings onto the main system Part II. Installing the system Note: The RO Membrane Element has already been pre installed. PART I. ASSEMBLE THE FILTERS AND HOUSINGS ONTO THE MAIN SYSTEM Remove plastic/paper wrappings on the 3 filters, put them into the 3 housings, and assemble the housings onto the main system as follow: 1.
  • Page 9 PART II. INSTALLING THE SYSTEM Space: Make sure there is sufficient space under the counter for installation (an area of about 17”L x 6”W x 18”H for the system, 11”D x 18”H for tank). The RO system is best installed under the kitchen sink. But if that is not feasible you can install the system anywhere where there is a cold water supply with sufficient water pressure for the chosen RO model, and an outlet to drain off the waste water from the system.
  • Page 10 Fig. 5A - Needle Valve Installation. Attach the needle valve (C) to water supply adapter (A). Please apply 5-6 wraps of teflon tape to needle valve prior to connecting it to the water supply adapter (A). Fig. 5B - If your pipe has a 1/2” Connection. By attaching the 1/2”...
  • Page 11 3. Recommend Connection For Flex Line Riser: See Fig.6A. & Fig. 6D. Loosen nut and separate cold water riser tube from faucet shank. Gently bend riser tube so that the Feed Water Adapter (Fig 5) fits onto the faucet shank. If your riser tube has no built-in washer, then fit the cone-shaped washer provided onto the riser tube.
  • Page 12 Fig. 6C Fig. 6D Fig. 6E 4. Needle Valve: See Fig. 6C. Screw the Needle Valve onto the Adaptor tightly. Apply 6-8 rounds of Teflon tape onto Needle Valve before attaching it to the Adaptor. To open needle valve: Turn needle handle counter-clockwise. To close needle valve: Turn needle handle clockwise.
  • Page 13 Step 2: Drain Saddle Installation Note: To avoid annoying drainage noise, mount drain line as low as possible on the vertical tailpiece, or on horizontal tailpiece. There is constant water pressure “packed” inside the RO system which blocks the waste water from backing-up into the system.
  • Page 14 3. See Fig.9, 9A. Make sure to align the drain saddle hole to the drilled hole perfectly. Mis-aligning these two holes will block the waste water and cause membrane damage. Attach the drain saddle to the drain pipe and tighten the two screws evenly. Fig.
  • Page 15 3. For Porcelain Sink: Porcelain enameled sinks can readily be chipped if care is not exercised when drilling the hole. Before starting the drill motor, apply firm downward pressure on the bit until a crunching occurs. This will help keep the drill bit from walking when starting the hole. A small pilot hole will also aid the drill bit.
  • Page 16 -stage membrane to drain outlet — Black tubing. Please Note: The diagram below is for our Non Pump RO-45, RO-90 and RO-PH90. If you are installing the RO Perm or RO Pump, please refer to the diagram in the addendum.
  • Page 17 Fig. 11A Details on Tubing Connections: To ensure a smooth and correct installation, please connect the water lines following the se- quence and order outlined below. Refer to Fig.11 & 11A for proper point locations. 1. Point Z Faucet connection: Tubing color: Clear tubing.
  • Page 18 3. Point W Waste water connection: Tubing color: Black tubing. Connect the BLACK tubing from the RO to the Drain Saddle. Fitting type: Quick-Connect fitting on drain saddle. No teflon tape. Do Not add ”insert” into Black tubing. Simply push tubing into port. 4.
  • Page 19 7. Point Y Tank’s input & output connection: Prepare tank: See Fig.12. Apply 6-8 wraps of Teflon tape to tank’s threaded Output stem on top of tank (remove rubber cap if there is one). Screw tank Valve onto Output stem. Tubing color: Yellow tubing.
  • Page 20 Using RO for Ice-maker only: If you want the RO to feed your ice-maker (fridge) only, you should still connect the RO faucet as a 2nd outlet. This allows you to drain the tank, flush new filters through the faucet rather than through your icemaker line.

This manual is also suitable for:

Ro-ph90
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