iSpring RCC7 Water Filtration Systems User Manual

We stand behind our products. Since 2005, iSpring has been dedicated to providing high-quality drinking water to families across the United States. We provide various residential faucets and water filtration systems that purify your water in everyday life and deliver pure, healthy, and tasty water to you and your family. At iSpring, we strive to develop products to the highest of standards and aim to make excellent drinking water accessible for all households. With affordable pricing, reliable quality, prompt delivery, and top-notch customer service, we hope to assist in bringing you great water for years to come.

System Installation

Before Installation
Installation is to comply with all local laws and regulations*

Inspect the package
Open the box and remove all of the components. Inspect them to ensure nothing was damaged during shipping. If any part is cracked or broken, please immediately contact iSpring Customer Support for a replacement. Identify and get familiar with the components.

Recommended tools list

• Variable speed drill with two bits: 1/4″ (for drilling a hole in a PVC drain pipe), 1/4″ hollow diamond (for drilling a hole in the countertop for a drinking faucet)
• 5/8″, 9/16″ open-end wrench, or adjustable wrench, and pliers
• Phillips head screwdriver
• Scissors or a utility knife

Operating conditions

• Minimum recommended water pressure: 30 psi
• Maximum water pressure: 70 psi; otherwise, a pressure regulator (model: APR70) is required to lower the pressure to the maximum level.
• Operating water temperature range: 40 – 1100°F(4 – 37 °C) (This RO system is NOT  designed for HOT water).
• The RO process will be faster and more efficient within theoperating range with the water temp on the warmer side and less so on the colder side.
• Maximum TDS: 750 ppm
• Install this RO system in a location where it is safe from hot/cold weather and direct sunlight. Avoid hitting, dropping, or dragging the system, as this can cause cracks and leaks.

The Requirements of the Influent Water Characteristics.

The Requirements of the Influential Water Characteristics
Total Coliforms	None	Fluoride (mg/L)	1
Heat-resistant coliforms	None	Turbidity (NTU)	1
Escherichia Coli	None	pH	>6.5 and <8.5
Bacterial colony count (CFU/ml)	100	Aluminium (mg/L)	0.2
Arsenic (mg/L)	0.01	Iron (mg/L)	0.3
Cadmium (mg/L)	0.005	Manganese (mg/L)	0.1
Chromium (Hexavalent) (mg/L)	0.05	Copper (mg/L)	1
Lead (mg/L)	0.01	Zinc (mg/L)	1
Mercury (mg/L)	0.001	Chloride (mg/L)	250
Selenium (mg/L)	0.01	Sulfate(mg/L)	250
Cyanide (mg/L)	0.05	TDS (mg/L)	1000
Fluoride (mg/L)	1	Hardness (mg/L)	450

Component Identification

If your system is a 6-stage or 7-stage with an Alkaline, DI, or UV filter, they are already preinstalled on the machine head.

Understanding the Booster Pump and RO Process

1. Source water enters the system and passes through the stage 1, 2, and 3 pre-filters.
2. Located between the pre-filters is the Lowpressure Switch. This switch turns on when the incoming water pressure is 6 psi or greater.
3. The High-pressure Switch turns on when the pressure from the pressurised tank is below 20 psi, and turns off at 45 psi (e.g., when the tank is full).
4. When the Low-pressure Switch and High-pressure Switch are both on, the Feed Water Solenoid Valve opens, allowing water to the Booster Pump.
5. The source water passes through the Booster Pump, bringing it to approximately 135 psi, entering the membrane housing.
6. Coming out of the RO membrane are a pure water port and a wastewater port. The RO water is forced through the .0001 micron-sized holes of the RO membrane and exits through the one-way Check Valve on the membrane’s pure water exit port.
7. The water rejected by the RO membrane exits through the wastewater exit port. On the drain line before the wastewater is disposed of is the Flow
8. Restrictor, limiting the amount of drain water allowed out to keep pressure in the system.
9. The pure water is then routed to the pressurised storage tank. As the storage tank fills, the tank pressure rises. When the pressurised storage tank reaches 45 psi, the tank pressure triggers the High-Pressure Switch off, shutting the booster pump and system off.
10. When you open the RO faucet, the water exits the tank, passes through the FT15 post-carbon filter, and is dispensed from the RO faucet. As the RO water is dispensed, the tank pressure will gradually drop back down, triggering the High-Pressure Switch back on to refill the water removed from the tank.

Installation Tips

How to Use the Quick-Connect Fittings

To Connect

1. See Figure 1. Check and cut the tubing end squarely and cleanly with a utility knife or scissors.
2. Make a 5/8″ mark at the end of the tube so you will be able to confirm when the tube is inserted fully into the fitting.
3. Remove the blue lock clip from the fitting with your nail. If the lock sleeve pops out of the fitting when doing this, pop it back in.
4. Insert the tube into the fitting until you reach the 5/8″ mark on the tube. You will feel resistance when the tube reaches the small rubber O-ring inside the fitting.
5. You will need to wiggle the tube and apply additional pressure to get it past this O-ring and create the seal. If the tube is not 5/8″ into the fitting and past the O-ring, no seal will be created, and leaking will occur.
6. Once the tube is fully inserted, pop the blue lock clip back on the fitting. This will lock the tube in place and prevent it from moving.

To Disconnect

1. See Figures 2 and 3. Remove the blue lock clip from the fitting.
2. With the blue lock clip removed, use your thumb and index finger to hold down the lock sleeve. This will release the metal teeth holding the tube in place.
3. While holding the lock sleeve down with that hand, use your other hand to remove the tube from the fitting.

How to Connect the Compression Fitting
A compression fitting connects the PVC tubing to the threaded metal inlet with a tapered open end, such as the refrigerator water inlet etc.

1. Slide the brass nut and tube collar onto the tube.
2. Fully insert the tube into the end of the tube.
3. Slide the tube collar towards the tube insert until it stops.
4. Insert the tube into the tapered, open end of the threaded metal inlet as shown in the picture.
5. Screw on the brass nut and tighten it up. The brass nut compresses the plastic tube collar onto the tapered metal surface.
6. It creates a water seal between them while the tube insert stiffens the tubing.

How to Drill a 1/2″ Hole in Your Sink or Countertop

1. It’s highly recommended to watch the YouTube video “How to Drill Faucet Holes” to understand the process better.
2. Depending on what countertop you have, you may want to hire an experienced professional to ensure the hole is drilled correctly.
3. Choose a 1/2″ Diamond Core Bit for granite and a titanium drill bit for steel. Do NOT use a hammer drill on natural stone, glass, and ceramic.
4. An indent should be made with a punch on steel before drilling to help guide the bit.
5. Use caution when drilling on a Porcelain sink, as it could be easily chipped. Set drill speed on slow. Press the bit downward firmly until breaking through the slippery surface.
6. Some people found it easier to secure the bit by drilling through a piece of wood firmly pressed on the surface.
7. Use coolant to disperse heat. Choose water for granite and oil for steel. Use the Water Suction Cup to hold coolant inside and prevent the drill bit from slipping.
8. Starting at the slowest speed, hold the drill firmly and vertically, preventing the drill bit from slipping on the counter.
9. After breaking through the smooth surface, swirl the drill a little to evenly apply pressure in a circle.
10. Be patient and deliberate. It can take 20 – 40 minutes to drill through 1″.

Sample Installation

• A. Source water from Feed Water Adapter →  B. Source water to the 1st stage water inlet
• C. Wastewater from Flow Restrictor →  D. Wastewater to Drain Saddle/drain pipe
• E. RO water from stage 5 “T” fitting →  F. RO water to Storage Tank
• F. When the drinking faucet is opened, RO water from the tank passes through E and  G → H. RO water to the drinking faucet

Note: The diagram represents a faucet with a non-air gap installation. There is one valve present on the pure water line, and the flow restrictor doubles as a one-way valve, preventing drain water from entering back into the system.

Installation Steps
Before you begin the installation, it is highly recommended to watch the video “iSpring Reverse Osmosis Installation” on YouTube.
Note: If you plan on mounting/hanging the system, it is highly recommended to include supports under each of the bottom three housings.
Supports under the housings will take the water weight off the housing threads and ensure the thread strength does not decay over the years.
Note: The booster pump (and UV stage if applicable) should remain unplugged until directed.
Note: Steps 1 – 7 are independent and can be performed in any order.

Step 1: Installing the Feed Water Adapter (AFW43)
(The bushing can convert 3/8″ comp. To 1/2″ NPT. Refer to the AFW43 user manual.
Step 1. a. See Figure 5. Turn off the Cold Water Line via the Cold Water Supply Valve (CWSV) under the sink. Open the kitchen faucet to release any pressure and ensure the water has stopped before proceeding to the next step. Get a towel or bucket to catch any
water drips. Disconnect the Kitchen Faucet Connector (KFC) pipe from the CWSV.
Step 1. b. Check to make sure the O-ring is seated inside the AFW43 female end, and twist it onto the CWSV. Tighten it using a wrench or pliers.
Step 1. c. Twist the KFC onto the male end of the AFW43. Turn the handle of the AFW43 to the perpendicular OFF position. Turn on the CWSV slowly, and ensure you are getting a proper seal.
Step 1. d. Connect the 1/4” RED tubing to the AFW43.

Feed Water Adapter with Bushing to convert 3/8″ COMP to 1/2″ NPT

Step 2: Installing the RO Faucet
Step 2. a. If your kitchen sink does not have an existing 1/2″ faucet hole, you will have to drill one. (Refer to How to Drill a 1/2″ Hole in Your Sink or Countertop). Wipe clean and dry the area.

Step 2. b. Slip the front plate on the faucet stem, followed by the rubber washer. Insert the faucet stem into the hole on the countertop. Under the sink, slip on the back rubber washer, and tighten the nut with the plastic wing.
Step 2. c. Slide the quick-connect up the push-in adapter on the base so that it seats securely into the faucet stem, then lock it in place by sliding the blue clip under the collet.
Step 2. d. Insert the BLUE tubing about 1/2″ into the push-in fitting, and again, secure it with the blue clip.

How to install an Air-gap Faucet (optional)
Note: The installation instructions below are for your reference only. An air gap faucet is not included with this system.

• Drill a hole in the kitchen sink or countertop if there isn’t already a spare one. Refer to the manual of the faucet when determining the size.
• Place the front plate and the rubber washer on the baseof the faucet. Mount the faucet on the countertop.
• From under the sink, connect the RO system’s pure water output line to the faucet stem. Attach the black drain line from the RO system to the drain input barb.
• Attach one end of the faucet drain line to the drain output barb and the other end to the drain saddle on the drain pipe. Assemble the hardware according to the faucet manual.

Step 3: Installing the Drain Saddle
Step 3. a. Choose a spot on the drainpipe that is convenient for installing the drain saddle and
tubing. A horizontal pipe is recommended to minimise the dripping sound.
Step 3. b. Drill a 1/4″ hole in the drainpipe, and paste the black sticky pad around the hole.
Step 3. c. Cut the BLACK tubing end to make a 45-degree angle. Slip the plastic nut and front plate on the tubing.
Insert the tubing into the 1/4″ hole in the drainpipe, install the back plate, and tighten the two screws with hex nuts while the tubing remains in the hole.
Step 3. d. Tighten the nut on the Drain Saddle by hand. Pull the tubing lightly to make sure it is secure.

Install the Air Gap (optional)
Note: If your sink does not have an unused hole for mounting the air gap body, bore a hole depending on the size of the air gap body next to the sink using an electric drill and hole saw.

• Remove the cover and collar from the top of the air gap body. Leave the gasket, washer, and nut threaded to the bottom of the air gap body.
• Attach the drain hose from the dishwasher to the leg. Secure with a stainless steel hose clamp.
• Attach the drain hose to the leg of the garbage disposal or the side inlet piece of the sink trap. Secure with a stainless steel hose clamp.
• Push the air gap body up through the unused hole of the sink rim or countertop. Approximately 2-1/4″ of the air gap body should appear above the sink rim or countertop.
• Securely tighten the nut and collar against the sink rim or countertop. Place the cover over the air gap body.

Step 4: Installing the Vertical Filters: Stages 1, 2, and 3

Step 4. a. Make sure the O-ring is seated inside the groove on top of the filter housing. A light amount of food-grade silicone jelly may be used to help the O-ring seal better, but it is not required.
Step 4. b. The filter cartridges are preserved in shrink wrap. Note the direction sign on the sticker before removing the wrap.
Step 4. c. When placing the filter cartridge into its housing, make sure it is centered and the knob protruding from the bottom of the housing fits in the central hole of the filter.
Step 4. d. Screw the housing, with filters attached, onto the housing caps (caps are pre-assembled on the machine head). The cap also has a center knob that should be inserted into the center hole of the filter cartridge.
Twist the housing on in a clockwise direction by hand, and then use the housing wrench to tighten it another 1/4 – 1/2 of a turn. Do not over tighten. This can cause leaks and make it difficult to unscrew the housing when replacing filters.
Step 4. e. Follow steps 4.a – 4.d to install the GAC and CTO filters. *Note* the second stage GAC is the only filter that must go in a certain direction. Please make sure the end with the rubber washer faces up, thereby attaching it to the housing cap.

Step 5: Installing Tank Shut-off Valve (TSV)
Step 5. a. Wrap 10 – 15 wraps of Teflon tape clockwise (when looking from above) onto the metal thread at the top of the tank.
Step 5. b. Screw (clockwise) the Tank Shut-off Valve on and tighten it by hand. Do notover-tightenn.
Step 5. c. Connect the YELLOW tubing to the Quick-fitting on the TSV.

Step 6: Installing the Reverse Osmosis Membrane

Step 6. a. First, disconnect the white tube from the quick-fitting connection on the membrane cap. This will allow you to unscrew the membrane housing cap.
Step 6. b. All the systems are wet tested without filters before shipment, so you may notice some water drops inside the housing.
Step 6. c. Unscrew (counterclockwise) and remove the membrane cap.
Step 6. d. Following the flow direction sign on the membrane, cut open the “small end” of the bag, hold the membrane with the bag to avoid touching or contaminating it, and firmly insert it into the housing.
This way, the end is with the two small black O-rings towards the bottom. When it is inserted fully and correctly, the “bigger” end of the membrane will be even with the housing opening. See Figures 12-13. After the membrane has been fully inserted, you may then disregard the bag.
Step 6. e. Before twisting the housing cap back on, make sure the O-ring is seated at the end of the membrane housing, as shown in Figures 12 and 13. This is very important to avoid leaking and damage to the O-ring.
Step 6. f. Place the membrane housing cap back on, hand tighten it, then use the housing wrench to tighten it another 1/4-1/2 of a turn. Do not over tighten.
Step 6. g. DO NOT reconnect the tubing to the fitting on the cap at this point (will be done in system startup).

Step 7: Tubing Hook Up (see figure 5 above to see letters not shown below)

Step 7. a. See figure Sample Installation and figures of system top view and note connection points A-B, C-D, E-F, and G-H.
Step 7. b. Facing the system’s front, the 1st stage is the see-through housing located on the right-hand side. Connect the RED tubing Feed Water Adapter (AFW43) (point A) to the stage 1 elbow fitting (point B).
Step 7. c. Connect the Flow Restrictor (point C, 3″ long cylinder with a FLOW labelled on it) to the Drain Saddle (point D) with the BLACK tubing.
Step 7. d. On the right side of the Post Carbon Filter (FT15, 5th stage), connect the T-fitting (point E) and the Tank Valve (point F) with the YELLOWtubing.
Step 7. e. At the left end of stage 5 FT15 filter, insert the BLUE tubing (links to RO faucet) into the elbow fitting. Models with UV/AK/DI: RO water flows out of point G at FT15 and flows into the next stage’s input (left) side. So the BLUE tubing should be connected to the output side of the final stage.
Step 7. f. Connect the other end of the BLUE tubing to the RO faucet (refer to How to Use the Quick-connect Fittings).
Step 7. g. You may neatly organise the tubing, but make sure to leave enough length so the filter system can be moved freely in and out of the cabinet when replacing filters.
Step 7. h. You can mount the system using two 10 x 1-1/4 Phillips Flat Wood Screws. This will make replacing filter cartridges easier.

Note: If you plan on mounting/hanging the system, it is highly recommended to include supports under each of the bottom three housings. Supports under the housing will take the water weight off the housing threads and ensure the thread strength does not decay over the years.

Step 8: System Start-up model-specific sub-steps are marked with a *)
Note: You may now plug in the booster pump to an outlet. The pump will not turn on until the water is flowing. If your model has a UV stage, do not plug in the UV power until the system has been fully flushed.
Step 8. a. Make sure no tubings are kinked. Turn the Tank Shut-off Valve OFF (perpendicular to the yellow tube). Place a towel under the system to catch any possible water leaks.
Step 8. b. To prevent any residual carbon from the carbon pre-filters from getting into the R,  disconnect it. Open the Feed Water Adapter Valve (AFW43) and Cold Water Supply Valve (CWSV), and flush the first three stages into a bucket until the water turns clear.
Step 8. c. Once the water is clear, shut off the AFW43 and reconnect the tubing to the RO membrane housing cap. You will want to flush the first three stages like this whenever they are changed.
Step 8. d. Open the RO faucet. Slowly open the AFW43 back up and check for any leaks. The top 3 causes of leaks are: 1) The tubing is not fully inserted into the quick-connect fitting. 2) The O-ring is not in the correct place or is kinked. 3) The Housing/Cap is not tightened properly or is misaligned with the threads.
Step 8. e. Within 5 minutes, the booster pump will kick on, and RO water will start slowly trickling from the faucet. Let the faucet trickle for at least 15 minutes to flush out the entire system apart from the tank. The water may appear black at first due to loose carbon from new carbon filters. It will eventually turn clear,r apart from many tiny air bubbles, leaving the system.
Step 8. f. Shut off the RO Drinking Faucet. Open the Tank Shut-off Valve. Wait for the tank to fill up completely. It will take 1 to 2 hours, depending on your water temperature (40°F – 100°F, the warmer, the faster) and source water TDS (up to 750 ppm, the lower, the faster). The pump will shut off automatically when the tank is full.
Step 8. g. After the tank is full, open the RO Drinking Faucet to drain the tank completely. Do not use the first tank of water. Let it drain into the sink until the stream turns back to a trickle. This means the tank has emptied, and you can close the RO faucet to let it begin filling again.
Step 8. h. * If your system has a UV filter, plug in the UV power and check to ensure the UV light turns on when water flows through it. The UV filter has a Flow Sensor Switch that detects water flow and only turns the light on when needed. If the UV is not turning on when water flows through, confirm the power source you are using has power. Typically, the garbage disposal outlet only has power when the disposal is switched on.
Step 8. i. The TDS (total dissolved solids) of the water should be tested periodically to verify that the system is performing properly. iSpring RO systems have exceeded the minimum requirements for NSF/ANSI standard 58. They should be giving an average TDS reduction rate of 90%+, so if your tap water is 100 ppm, you should be getting 10 ppm or less from the RO water (200/20>, 400/40>, etc This reverse osmosis system contains a replaceable treatment component critical for the effective reduction of total dissolved solids. That product water should be tested periodically. TDS is measured with a TDS meter – it is an inexpensive, easy-to-use device that can be found on Amazon.com or 123filter.com by searching “iSpring TDS.”
Step 8. j. Check for leaks daily for the first two weeks after installation to ensure the system is functioning properly. Install the included Flood Alarm to provide additional peace of mind and protection.
Note: Do not use microbiologically unsafe water or unknown quality without adequate disinfection before or after the system. Systems certified for cyst reduction may be used on disinfected water that may contain filterable cysts.

Congratulations, you have successfully installed your iSpring Reverse Osmosis Water Filtration System!
Start enjoying fantastic reverse osmosis water right from your tap! Please read this manual for useful reverse osmosis system maintenance information.

Section 1: iSpring RO System Maintenance

All iSpring RO systems are designed with ease of use and low maintenance in mind. If the filter cartridges are changed on schedule as suggested, the system will work properly for years to come. See the chart below for the filter pack model numbers for your system. The filter packs can be found on 123filter.com, Amazon, or HomeDepot.com.

This reverse osmosis system contains a replaceable component critical to the efficiency of the system. Replacement of the reverse osmosis component should be with identical specifications, as defined by the manufacturer, to ensure the same efficiency and contaminant reduction performance.

System Model	1-Year Filter Pack	2-Year Filter Pack	3-Year Filter Pack
RCC7, RCC7P	F7-GAC	F15-75	F22-75
RCC7AK, RCC7P-AK	F9K	F19K75	F28K75
RCC7AK-UV	F10KU	F21KU75	F31KU75
RCC7D	F9D	F19D75	F28D75
RCC7U	F8U	F17U75	F25U75
RCC1P	F7-GAC	F15-100	F22-100
RCC1PAK	F9K	F19K100	F28K100
RCC1UP	F8U	F17U100	F25U100
RCC1UP-AK	F10KU	F21KU100	F31KU100
RCW5	F7-GAC	F15-50	F22-50

Note: Stages 6 and/or 7 only exist on specific models.

Stage 1 – 3 Pre-Filters
Replace every 6 months or sooner if you notice a decrease in water flow or quality. The replacement frequency depends on your water usage and source water quality. Changing the prefilters according to the schedule is essential to protect the RO membrane from chlorine and other damaging contaminants.

How to change the stage 1 – 3 pre-filters

1. Shut off the cold water supply and tank valve, and open the RO faucet to depressurise the system. Place a bucket or towel under the system to catch any water spills.
2. If there is enough room under the sink and the filter system is hung on the wall, you can twist the filter housing off without removing the system from the wall.
3. Otherwise, you will need to pull the system out, lay it down, and remove the housings at that point. Be careful with the tubing connections when removing the system.
4. Twist off the filter housings in a counter-clockwise direction using the filter housing wrench.
5. Refer to Installation Step 1.1 to install the new vertical filter cartridges, and tighten the filter housings back on. Remember not to over tighten them, or they will be hard to unscrew next time.

Stage 4 RO Membrane
Replace every 2-3 years or sooner if the TDS level starts increasing. Check the TDS level at least once a month to monitor the system’s performance. The TDS rejection rate should be 90%++. To calculate the rejection rate, divide the RO water TDS by your tap water TDS and subtract 1. For example, 20 (RO TDS) / 200 (Tap water TDS) = 0.1 1-0.1 = 0,9, so the TDS rejection rate would be 90%. (NSF/ANSI STANDARD 58 for RO water filter).

How to Change the Reverse Osmosis Membrane

1. The RO membrane typically lasts about 2 – 3 years. The membrane life span depends on the source water quality, water usage, and how often the three pre-filters are replaced. It is essential to replace the pre-filter cartridges on schedule to ensure their performance and water purity. Use a TDS meter to check the RO water purity periodically.
2. Shut off the cold water supply valve and tank valve, and open the RO faucet to depressurise the system. Place a bucket or towel under the system to catch any water spills.
3. Remove the tubing from the quick-connect fitting on the membrane housing cap. Use the membrane housing wrench to twist off the housing cap in a counter-clockwise direction.
4. Pull out the old membrane. Use scissors or pliers to apply leverage if necessary.
5. Clean the membrane housing using hot water and scent-free dish soap (optional). Rinse thoroughly.
6. Cut open the small end of the packaging containing the new RO membrane. Hold the new membrane through the packaging, and insert it into the housing without touching the membrane with your bare hands to avoid contamination of the membrane.
7. Ensure the O-ring is correctly seated on the end of the membrane housing, as shown in the previous images. We recommend replacing the O-ring every 3 years to prevent leaking due to an expired or dried-out O-ring.
8. Place the membrane housing cap back on, and hand tighten it, then use the housing wrench to tighten it another 1/4-1/2 of a turn. Do not over tighten.

Stage 5 FT15 Inline Post Carbon Filter and Stage 6 FA15 Inline Alkaline Filter

1. Replace the FT15 every 12 months and the Alkaline filter every 6 months
2. Remove all quick-connect tubing connections from the FT15 Post Carbon Filter.
3. Unscrew the fittings from both ends of the old Post Carbon Filter. Wrap the thread of each fitting 2-3 times with Teflon tape, and screw them into their respective sides on the new Post Carbon Filter.
4. Reconnect the quick-connect tubing connections to the new Post Carbon Filter.

Tank Maintenance
It is recommended to empty and refill the tank at least once a month. This keeps the water inside the tank fresh and not sitting for an extended period.

What should I do with the system when going out of town?
When you are leaving for an extended time, you will want to shut off the water supply to the system and empty the tank. To do this, close the knob on the feed water adapter, and open the faucet until it stops running. This will signify that the tank is empty. T

Optional Add-on

Ice Maker Kit (ICEK)
The Ice Maker Kit (model#: iSpring ICEK) can be purchased separately to feed RO water to your refrigerator for crystal clear ice cubes and great tasting water. If you choose to hook up the system to your refrigerator output, it can take the place of primary output over the RO faucet.

Section 2: Troubleshooting Guide for Newly Installed Systems with w/Booster Pump

1. Zero output of water from the RO faucet
   • a) The water supply is closed. Open the water supply to the system, so the valve is in line with the red tubing.
   • b) Incorrect installation. Verify all tubing connections.
   • c) The pump is not running, therefore not allowing water through. Make sure the pump is plugged into a live outlet that gets continuous power.
   • d) A tube is crimped, blocking the water flow. Check all tubings and uncrimp any crimped tubings.
2. The tank is not filling after several hours.
   • a) The Pump is not running, therefore not allowing water to pass through. See “Pump does not start.”
   • b) Incorrect installation. Verify all tubing connections.
   • c) The tank valve is closed. Make sure the tank valve is in line with the yellow tubing.
3. Leaking from where the tubings are inserted into the fittings
   • a) The tubing is not pushed in past the O-ring inside the fitting, therefore not creating a seal. Make sure the tubing is pushed in a full 1/2″ into the fitting. It will take some extra pressure, but you will feel the tube go entirely into the fitting when it does so.
     b) The O-ring inside the fitting is not creating a seal with the tubing. Unscrew the elbow fitting, and replace it with one of the extra elbow fittings. Make sure to wrap the new fitting thread several times with Teflon tape before screwing it in.
4. Leaking from between the membrane cap and the membrane housing
   • a) If the membrane housing is leaking, make sure the O-ring is seated correctly, as shown in sections “Installing the RO Membrane” and “How to Change the RO Membrane.” It should be seated at the end of the membrane housing before the threads begin. The membrane cap is then screwed on over it. When positioned incorrectly, it will create a gap or damage the O-ring. When in the correct place, there will not be any pressure or tension on the O-ring.
5. Low water flow (trickle) at RO faucet
   • a) The Tank has not been given a chance to fill. Allow approximately two hours for the tank to fill.
   • b) The tank valve is closed. Make sure the blue tank valve is in line with the yellow tube.
6. High TDS in RO water
   • a) The system will provide a 90%+ TDS rejection rate when working correctly. Meaning if your tap water TDS is 500 ppm, the water from the system should be 50 ppm or lower.
   • b) Incorrect installation. Verify all connections on the system.
   • c) If the TDS of the tap water and water from the system is about the same, ensure the RO membrane is installed. The semi-permeable membrane is blue, comes in sealed packaging, and goes in the stage 4 membrane housing.
   • d) If you are getting some reduction in TDS but not 90 %+, some water could be bypassing the membrane. Contact iSpring customer support to identify the exact cause.
7. Cloudy water after installation
   • a) In the weeks after installing the system or changing the filters, you will see many tiny air bubbles in the RO water. This can cause the water to appear “cloudy.” The bubbles will disappear as the system clears itself of trapped air and are harmless for the time being.
8. The system drains water 24/7 (continuous drain)
   • a) Keep in mind that it will take anywhere from 1-3 hours for the system to fill the tank from empty, and the drain line will be trickling during this time. If the drain line continues to run for 4+ hours, one of the following reasons could be the problem.
   • b) The pump is running 24/7. See “Pump runs 24/7”.
   • c) The inlet water solenoid valve is bad and cannot shut off the incoming water supply.
9. Leak from the tank valve connection
   • a) Make sure you have applied Teflon tape to the tank threads before screwing on the tank valve. There should be at least 8-10 wraps of Teflon tape to ensure a proper seal. If you have done this and it continues to leak, contact iSpring customer support
   • for a replacement.
10. Water from the system tastes the same as tap water
    • a) Incorrect installation. Verify all connections on the system.
    • b) The RO membrane is not installed in the housing. Ensure the membrane has been installed.
11. The pump does not start.
    • a) No power. Make sure the pump is plugged in. If it is plugged in and still not kicking on, make sure it is not plugged into the same outlet as the garbage disposal. Typically, this outlet only has power when the garbage disposal is switched on.
    • b) Incoming water pressure is below 30 psi. The low-pressure switch kicks on the booster pump at 30 psi, and if this pressure is not reached, the pump will not turn on.
    • c) The low-pressure switch is not functioning correctly and is therefore unable to turn the pump on.
12. Pump runs 24/7
    • a) If the pump is running 24/7 and the output flow remains normal, the high-pressure switch is faulty and not triggering the pump to turn off.
    • b) If the pump is running 24/7 and you are getting little to no output flow, either the check valve is losing pressure, or the pump itself is faulty.
    • c) Tank pressure is too low, never reaching the pressure required to shut the pump. Empty the tank and set it between 7-10 psi, and reconnect.

Section 3: Glossary and Terms to Know

• Add-On Kit (#ACL1): Filter add-on kit for adding additional in-line filters to an existing system. It comes with quick-connect elbow fittings, filter clamps, and extra tubing.
• Alkaline Remineralization Filter* (#FA15): 6th stage. Remineralises the RO water and neutralises the pH
• Auto Flush Solenoid Valve (#ASOF7): Automatically flushes the RO membrane to preserve membrane life and efficiency
• Booster Pump (#PMP5): 24-volt booster pump used by residential iSpring RO systems
• Check Valve (#ACV1K): One-way valve that does not allow water back into the membrane housing. It looks like a standard fitting and is located on the RO water port of the membrane housing.
• CTO Carbon Block Filter (#FC15): 3rd stage. 5-micron 10″ carbon block filter. Further reduces any residual chlorine, tastes, and odours before the water reaches the RO membrane.e
• Drain Saddle (#ADS1): Attaches to your under-sink drain pipe to secure the drain tube coming from the system.
• Drinking Faucet (#GA1-BN): The output source for the RO water. The faucet is a non-air gap faucet with a 1/4″ tubing connection. The optimally sized countertop hole for the faucet is 1/2″, but holes up to approximately 1 1/2″ will work.
• Elbow Fittings (#4044K): Quick-connect elbow fittings used on the system (except the membrane housing and cap). 1/4″ tubing connection and 1/4″ NPT male thread
• Feed Water Adapter (#AFW43): It goes in line with your cold water line and branches off a water supply line to the RO system. Can adapt to 3/8″ and 1/2″ cold water lines
• Feed Water Solenoid Valve (#ASOW7): Opens the water supply to the booster pump when the low-pressure switch and high-pressure switch are both on. Shuts off the water supply when one or both turn off
• Flow Restrictor (#AFR300): Limits the drain water flow, keeping pressure in the system and allowing the RO process to occur
• Flow Sensor Switch* (#FSS): Detects water flow to turn the UV filter on and off as needed
• GAC Filter (#FG15): 2nd stage. 5-micron 10″ granulated activated carbon filter. Reduces chlorine, tastes, and odours from the water
• GPD: Gallons Per Day
• High-Pressure Switch (#AHP1): Receives pressure signals from the pressurised storage tank. It turns on when the tank pressure is below 20 psi and turns off when the tank pressure reaches 45 psi (e.g., tank full)
• Housing Wrench for Membrane Housing (#AWR1): Housing wrench used to screw on and unscrew the membrane housing cap
• Housing Wrench for Stages 1, 2, and 3 (#AWR2): Housing wrench used to screw on and unscrew the stage 1, 2, and 3 filter housings
• Ice Maker Kit (#ICEK): Add-on kit that allows you to run water from the system to your fridge ice maker or fridge water dispenser
• Leak Stopper (#ALS1): Protects from any possible leaks by cutting off the water supply when the sponge absorbs water
• Low-Pressure Switch (#ALP1): Turns on when the source water pressure reaches 6 psi, turns off when the source water pressure drops below 6 psi
• Membrane Housing and Cap (#NW12): Horizontal housing that the RO membrane is inserted into. Membrane Housing O-Ring (#ORM): 2 1/2″ O.D.An  O-ring is used to create the seal between the membrane housing and the membrane cap.
• Post Carbon Filter (#FT15): 5th stage. Works as a final polishing filter before the water is delivered to the faucet
• PPM: Parts Per Million, a unit used to measure TDS readings
• Pressurised Holding Tank (#T32M): 3.2-gallon capacity pressurised water holding tank. The air bladder forces the water to the drinking faucet when the faucet is opened. The tank comes depressurised and should read 7-10 psi when empty
• PSI: Pounds Per Square Inch, a unit used to measure water pressure
• Quick Connect Fitting: A secure, easy-to-connect and disconnect type of fitting used on the system. The tubing is inserted past the tiny O-ring located inside each fitting, then locked into place by the spider lock and blue clip
• Reverse Osmosis (RO) Membrane (#MC7): 4th stage. High rejection, 0.0001 micron, thin-film composite (TFC) reverse osmosis membrane, the heart of the reverse osmosis process
• Sediment Filter (#FP15): 1st stage. 5-micron 10″ polypropylene sediment filter. Traps particulate matter such as dirt, rust, and silt
• Stage 1, 2, and 3 housing O-Rings (#ORF): 3 5/8″ O.D. O-ring used to create the seal between the stage 1, 2, and 3 filter housings and their respective caps
• Stage 1 See-Through Sediment Filter Housing (#HC12): Thetransparentt stage 1 housing holds the
• sediment filter. The see-through housing allows for the sediment filter to be visually inspected
• Stage 2 GAC Filter Housing (#HW12): Solid white housing that holds the stage 2 GAC filter
• Stage 3 CTO Filter Housing (#HW12): Solid white housing that holds the stage 3 CTO filter
• T Fitting on Stage 5 Post Carbon Filter (#7544K): T fitting located on the right side of the Stage 5 Post Carbon Filter
• Tank Valve (#ABV2K): On/off valve that screws onto the top of the tank
• TDS: Total Dissolved Solids, a measure of the contamination level of a water source
• TDS Meter (#TDS3): Handheld meter used to measure water quality
• Transformer for Booster Pump (#ATRF5): Power supply used for the PMP5 booster pump on residential iSpring RO systems
• Tubing (#T14B / #T14W): 1/4″ food grade tubing used on the system
• UV Replacement Bulb* (#UVB11): Replacement bulb for the UV filter
• UV Transformer/Ballast* (#UVT11A/UVT11B): Power supply for the UV filter. Indicator lights on the ballast will only light up when water is flowing. UVF11A is for 110V power sources,
• UVF11B is for 220V power sources

Warranty

This Limited Warranty extends to the original purchaser of the system only. This warranty covers all Manufacturersupplied items only that prove to be defective in material, workmanship, or factory preparation. This warranty covers parts only; all labor is excluded from this warranty, including, but not limited to, services related to the removal, replacement, installation, adjustment, maintenance, and/or repair of the unit or its components items.

Excludes all non-Manufacturer labour required for any servicing of the unit, including, but not limited to, servicing related to installation, adjustment, maintenance, and repair of the unit. This warranty applies only for the first full calendar year from the date of purchase. The following items are excluded from this warranty: membranes, filters, O-rings, and all other parts or components that require regular replacement as a result of ordinary usage.
Disclaimers: This Limited Warranty applies only if the system is installed, used, and maintained in compliance with all instructions and requirements enclosed with the system. This warranty will be void for failure to observe the following conditions:

1. The system is to be used with a potable water supply only.
2. Feed water pressure to the unit is no less than 45 psi (30 psi for systems with built-in booster pump) and no greater than 70 psi.
3. The system is to be used on water supplies with chlorine concentrations of 1.0 mg/L (ppm) or less.
4. Feed water temperature to the unit must be no less than 40°F and no more than 100°F.
5. Total dissolved solids (TDS) in feed water must be less than 750 mg/L (ppm).
6. Feed water must have a pH between 4 and 8.
7. Turbidity must be less than 1.0 NTU.
8. SDI must be less than 5.
9. Feed water must be completely free of iron, manganese, or hydrogen sulfide.

While the testing was performed under standard laboratory conditions, actual performance may vary. The Manufacturer does not know the characteristics of your water supply. The quality of water supplies may vary seasonally or over time. Your water usage may differ as well. Water characteristics can also change if the drinking water appliance is moved to a new location.

The Manufacturer assumes no liability for determining the proper equipment necessary to meet your requirements, and we do not authorise others to take such obligation on our behalf. This Limited Warranty does not cover any Manufacturer-supplied items that are defective as a result of the use of improper parts, equipment or materials. This warranty does not cover alterations or modifications of the unit or failure of a unit caused by such alterations and modifications.

This Limited Warranty does not cover malfunctions of the unit due to tampering, misuse, alteration, lack of regular maintenance, misapplication, fouling due to hydrogen sulfide, manganese or iron, scaling from excessive hardness, turbidity greater than 1.0 NTU, Silt Density Index (SDI) greater than 5.0 SDI, or excessive membrane hydrolysis due to chlorine levels over 1.0 mg/L (ppm). In addition, damage to the unit due to fire, accident, negligence, the act of God, or events beyond the Manufacturer’s control is not covered by this warranty.

Incidental and Consequential Damages Limitation: The Manufacturer will not be responsible for any incidental or consequential damages as a result of the failure of this unit to comply with express or implied warranties or any defect in the unit, including but not limited to, lost time, inconvenience, damage to personal property, loss of revenue, commercial losses, postage, travel, telephone expenditures, or other losses of this nature. In case some states do not allow the exclusion or limitation of incidental or consequential damages, you may choose to return the system. If you choose to keep it, you insist this exclusion STILL applies to you.

Owner’s Warranty Responsibilities: As a condition of this Limited Warranty, the owner must ensure that periodic maintenance of the system is performed as described in the literature enclosed with the system. Neglect, improper maintenance, abuse, modification, or alteration of the unit will invalidate this Warranty. Should your unit develop a defect or otherwise fail to perform under this warranty, you should contact the retailer from whom the product was originally purchased.
Implied Warranties: The implied at-law warranties of merchantability and fitness for a particular purpose shall terminate on the date one year after the date of purchase.

NOTE: IN CASE SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, YOU MAY CHOOSE TO RETURN THE SYSTEM. IF YOU CHOOSE TO KEEP IT, YOU AGREE THAT THE ABOVE LIMITATIONS STILL APPLY TO YOU.

Warranty Registration
To register your product for the warranty, visit our website at 123filter.com and go to the “Warranty” tab. We provide a 30-day money-back guarantee, a 1-year manufacturer warranty, and lifetime tech support for all of our products. However, we do not have the order information from websites other than 123Filter.com (Amazon, Home Depot, etc.), so please be sure to fill in that information upon registration of your system.

If you have any questions or concerns about your product, please do not hesitate to call or email us, or put it in the notes/comments upon your warranty registration. Your satisfaction is our business! If you are happy with our products and service, please show your support by writing a product review on Amazon, even just a single line. It takes you just a minute, but it means a lot to us. Thank you!

Atlanta, GA, USA
iSpringFilter.com
For questions, comments, or technical support, please contact us at:
support@123Filter.com
678-261-7611
Monday-Friday 8:30 a.m. – 5:30 p.m. EST

Download PDF:iSpring RCC7 Water Filtration Systems User Manual

References

• User Manual