FAQs

FAQs

1. Which filter set should I buy for my system?

Always check the part # on your user manual, and if the part # is not in the user manual, then type your system model # into our search engine. Once the item appears, scroll down to the bottom, and under the Water Filters category, you will find the replacement filters for your system. But if don't know which system or filters you have, please do not call us as our customer support can not help you over the phone, instead upload your system picture so we can figure out your pre and post-filters only but still we don't know the membrane size as you have to pull the membrane out and send us the label number. 

2. What is Reverse Osmosis and what types of contaminants does the Reverse Osmosis system remove?

Please click here Reverse Osmosis Systems

3. How can I connect and/or disconnect the tube from a quick type fitting?

4. Adding a booster pump to your existing system?

Please Click Here

Please note that won't cover the power adapter if fails after 15 days of purchase date https://www.maxwaterflow.com/Warranty-Information-_df_36.html   . These power adapters are very heavy duty and they won't go bad easily unless was shutting on and of constantly because of the incoming very low pressure / 5 psi and less. 

First of all, check the power outlet and if the booster flat plug power strips connecting well to the outlets as this the most common issue our customers face. 

Disconnect the low-pressure wires and connect them together and check if the booster pump is running if not disconnect the high-pressure switch wires too and check again and connect the wires and check again.  

5. What are the replacement filter part numbers for my Home Drinking Standard Reverse Osmosis System?

For 5 stage full replacement filters: 104550  or you can just buy the 3 pre-filters and last stage polishing filter 104504  and membrane 104092 

Other options for 75, 100 GPD system, buy  3 pre-filters and last stage polishing filter 104504 and any of the following membranes

75 GPD 104093 ,

100 GPD 104094

Other sizes please click here

Some examples of Max Water 50 GPD Reverse osmosis Systems

Max Water - Filters For Model - 101004 use part number 104550

Max Water - Filters For Model - 101006 use part number 104550

Max Water - Filters For Model - 101007 use part number 104550

Max Water - Filters For Model - 101009 use part number 104550

Max Water - Filters For Model - 101018 use part number 104550

Max Water - Filters For Model - 101032 use part number 104550

Max Water - Filters For Model - 101044 use part number 104550

Max Water - Filters For Model - 101045 use part number 104550

Max Water - Filters For Model - 101110 use part number 104550

Max Water - Filters For Model - 101111 use part number 104550

Max Water - Filters For Model - 101112 use part number 104550

Max Water - Filters For Model - 101122 use part number 104550

Max Water - Filters For Model - 101126 use part number 104550

Max Water - Filters For Model - 101128 use part number 104550

Max Water - Filters For Model - 101124 use part number 104550

Max Water - Filters For Model - 101309 use part number 104550

6. What are the replacement filters for my 6, 7, 8, 9 & 10 Stage Systems?

If your system is 50 GPD, you will need 104550 plus the following: Otherwise, for 75 or 100 GPD and up, you have to go back to Q.3 and purchase your pre-filters and membrane separately.

For 6-Stage alkaline RO systems 101073 or 101074, you need 104550 Plus add filter 104051

For 6-Stage mineral RO systems 101076, you need 104550 Plus add filter 104042

For 6-Stage infrared RO systems, you need 104550 Plus add filter 104044

For 7-Stage Mineral with UV Philips Light, you need 104550 Plus add filter 104042 Plus 105037 (always check your UV bulb model before purchasing this item) otherwise older models use UV bulb part # 105024

For 8-Stage Alkaline Mineral Infrared, you need 104550 Plus add filter 104180 or 104052

For 9-Stage Alkaline Mineral Infrared DI, you need 104550 Plus add filter 104180 or 104052 Plus 104050

For 9-Stage Alkaline Mineral Infrared with UV Philips Light System Part # 101086, Or 101038 you need 104550 Plus add filter 104180 or 104052 Plus 105037 (always check your UV bulb model before purchasing this item) otherwise older models use UV bulb part # 105024

For 10-Stage Alkaline Mineral Infrared DI with UV Philips Light System Part # 101089 , you need 104550 Plus add filter 104180 or 104052 Plus 104050 Plus Plus 105037 (always check your UV bulb model before purchasing this item) otherwise older models use UV bulb part # 105024

For 10-Stage Alkaline Mineral Infrared DI with PVC Casing UV Light System Part # 101088, you need 104550 Plus add filter 104180 or 104052 Plus 104050 Plus 105027 (always check your UV bulb model before purchasing this item)

7. What are the replacement filter part numbers for my Portable Reverse Osmosis System?

For 4-Stage Portable system you will need one filter 104040 Plus 2 filters 104041 Plus you need a membrane 104092 for 50 GPD.

For 5-Stage DI Portable system you will need one filter 104040 Plus 2 filters 104041 Plus one filter 104045 (Or for refillable & clear ones 104050 or 104050A ) Plus you need a membrane 104092 for 50 GPD., or 104093 for 75 GPD Systems

For 5-Stage Alkaline Portable system you will need one filter 104040 Plus 2 filters 104041 Plus one filter 104051 Plus you need a membrane 104092 for 50 GPD.

For 7-Stage Alkaline Portable system, you will need one filter 104040 Plus 2 filters 104041 Plus one filter 104180 or 104052 Plus you need a membrane 104092 for 50 GPD.

8. What are the replacement filter part numbers for my 5 stage Home Drinking Quick Change Reverse Osmosis System?

First Stage 5 micron Sediment 104061 ,

Second Stage GAC Carbon filter 104062 ,

Third Stage either CTO Carbon filter 104063 Or 1 Micron Sediment Filter 104060 (For high chlorine in the water choose CTO. For well water with high sediment, choose 1 Micron).

Fifth Stage polishing filter 104041

Fourth Stage membrane 104092

And For 8-Stage Alkaline Mineral Infrared, add all the 5 above plus add either filter 104180 or 104052  / some new systems supplied with connecting filter part number 104184

9. What are the replacement filter part numbers for my Home Drinking Reverse Osmosis System 101008, 101025L, 101058 & 101084 with a special lager sized filter?

5 stage full replacement filters 104505 and membrane 104092

Some examples of Max Water 50 GPD Reverse osmosis Systems

Max Water - Filters For Model - 101008 use part number 104505

Max Water - Filters For Model - 101058 use part number 104505

10. What are the replacement filter part numbers for my Aquarium Reverse Osmosis System?

4 stage - The first three pre filters 104515 + 1 Membrane if 50GPD 104092 , but if its 75 GPD 104093, and for 100 GPD 104094

5 stage - The first three pre filters 104515 + 1 Membrane ( any of the above 50 , 75 or 100 GPD) + Deionization filter 104045 or for refillable type you can select 104050 or 104050A or just buy DI media Bag 104028 to refill your refillable filters

6 stage - same 5th stage filter just either add another Deionization filter ( repeat stage 5 ) 104045 104050 104050A or refill media 104028 or add Carbon filter for some other system if carbon is required 104041 like the Dual systems ( Drinking + Aquarium)

11. What are the replacement filter for my 10" x 2.5" Whole house System?

Ø 2 stage ( Sediment 5 Micron + CTO Carbon Block) item # 104002 and 104005

Ø 2 stage ( Sediment 5 Micron + GAC Carbon Block) item # 104002 and 104004

Ø 3 stage ( Sediment 5 Micron + GAC Carbon + CTO Carbon Block) item # 104516

Ø 3 stage ( Pleated 5 Micron + Sediment 5 Micron +GAC Carbon) item # 104513

Ø 3 stage ( Sediment 5 Micron + Iron Manganese + CTO Carbon Block) item # 104002 plus 104321 and 104005

Ø 3 stage ( Sediment 5 Micron + Cation Resin + GAC Carbon) item # 104002 plus 104022 and 104004

You can find other filter combinations on the following link Water Filters : 10" X 4.5" Filters

12. What are the replacement filter for my 10" x 4.5" Whole house System?

Ø 2 stage ( Sediment 5 Micron + CTO Carbon Block) item # 104102 and 104104

Ø 2 stage ( Sediment 5 Micron + GAC Carbon Block) item # 104102 and 104103

Ø 3 stage ( Pleated 5 Micron + Sediment 5 Micron +GAC Carbon) item #104595

You can find other filter combinations on the following link Water Filters : 10" X 2.5" Filters

13. What are the replacement filter for my 20" x 2.5" Whole house System?

Ø 3 stage ( Sediment 5 Micron 104081 + GAC Carbon 104082 + CTO Carbon Block 104083)

You can find other filter combinations on the following link Water Filters : 20" X 2.5" Filters

14. What are the replacement filter for my 20" x 4.5" Whole house System?

Ø 2 stage ( Sediment 5 Micron + CTO Carbon Block) item # 104586

Ø 2 stage ( Sediment 5 Micron + GAC Carbon Block) item # 104580

Ø 3 stage ( Sediment 5 Micron + GAC Carbon + CTO Carbon Block) item # 104592

Ø 3 stage ( Pleated 5 Micron + Sediment 5 Micron +GAC Carbon) item # 104590

Ø 3 stage ( Sediment 5 Micron + Iron Manganese + CTO Carbon Block) item # 104112 Plus 104121 and 104114

You can find other filter combinations on the following link Water Filters : 20" X 4.5" Filters

15. How do you change your whole house pressure gauges.

If you would like to install or exchange the old gauges with a new pressure gauges, please remove all the old Teflon tape from the pressure gauges and apply 4-5 rounds of Teflon tape in the clockwise direction. Please make sure the Teflon is not applied loosely otherwise leaking may occur. To install the pressure gauges onto the system, DO NOT turn the pressure gauges from the head otherwise you may cause damage. Instead, use a suitable wrench at the base of the pressure gauge and turn the pressure gauges clockwise 360 degrees about 4-5 times maximum otherwise you will damage/ crack the housing gauge hole.

16. Why Does the Water From My Reverse Osmosis System Seems Cloudy or Milky?

The water out of my Reverse Osmosis system looks milky or cloudy, what is the reason behind this issue?

This is generally caused by trapped air within the RO system. However, it will not affect the quality of your water. The cloudiness should disappear within a minute after water sits in a glass. This is a normal occurrence with a newly installed RO System or after a filter change. You can release the air from your RO system by draining the tank 1 to 2 more times or using RO makes humming noise air release instructions in your system manual (see below).

Instructions to Release Air Trapped in Check Valve:

If your RO system makes a whining or humming noise, most likely it’s due to air which got trapped in the “Check Valve” during installation. So we need to get rid of the air in the Check Valve.

The Check valve is on the left side of the Membrane Housing. It is an internal valve encased in the L-shaped plastic fitting. It connects to the Clear line that puts out pure water from the Membrane housing.

To relief the air bubbles, do as follows: (See Pictures Below)

Step 1: Close the Tank’s valve.

Step 2: Tilt the RO system to the right. Put something under the 3rd filter housing to keep RO tilted. This will help dislodge the air bubbles from the Check Valve.

Step 3: Turn on the RO spigot. Let pure water flow thru spigot for about 1 minute. This forces the air to flow directly out to the spigot, bypassing the tank.

Step 4: Turn off the spigot. Wait for about 10 seconds. Repeat step 3 again. Perform this step around 3- 4 times.

17. How to Replace the O-Rings in a Quick Connect Fitting

These instructions for repairing quick connect fitting such for John Guest fitting

Turn off the incoming feed water inlet line and open a faucet downstream of the unit to relieve the system internal pressure and also close the valve on top of the storage tank.

Remove the tube from the fitting by pressing inward on the collet and simultaneously pulling the tube out of the fitting.

Remove the collet from the fitting. Just grasp it with your fingernails and pull it out.

Use a thin bladed screwdriver, a toothpick, tweezers, or some other thin tool to pull the o-ring out of the fitting. Be careful not to damage the fitting, but don’t worry about the o-ring. You're going to throw it away.

Put the new o-ring into the fitting and push it into position with the end of the tube itself. (Don't use a sharp tool that could damage the new o-ring.) The o-ring should be pushed in so that it stands against the back wall of the fitting.

When the o-ring is in place, reinstall the collet by simply pushing it back into the fitting. If the o-ring is slightly out of position, inserting the collet should fix it. You normally won't need to replace the collet, but it doesn't hurt.

18. Where should I go to test my water sample?

Please click on this link to show you all Ontario licensed laboratories

19. I am getting weird sound from my RO system?

usually, the sound presents for may reason. High pressure, low pressure, and auto shut failer after 5 years.

* Hi, pressure more than 75 psi, add pressure reducer. Part #105229

*Low pressure less than 50 PSI check city water incoming pressure to the system membrane housing inlet. if its less than 50 PSI check the pre-filters as they might be clogged with dirt. The pressure is well and more than 50 PSI check the membrane if it's more than 2 years replace it. if all above is good and city water is less than 50 PSI then you have to add a booster pump to increase the pressure for more than 60 PSI

* check the flow restrictor if partially blocked with the dirt during the use buy Appling water pressure from the opposite side.

if all above is good then change the auto shut off valve. Search item # 105111

20. Adding Air to the Reverse Osmosis Storage tank?

When water stops running out from the faucet; check the tank weight, if it's more than 10 Lbs, that means that the tank air pressure is down. Use a bicycle manual pump and start adding air and the entire process it takes about 10 to 15 minutes to fill the tank at its optimal PSI (6 - 7 PSI ) while the tank water bladder is completely empty. Make sure to not add air ( in all tank at once) because that will damage the air bladder. When pumping air to the tank, only make 2 pumps on a time and wait until the tank releases water out from the topwater threaded valve, once the water stops make proceed to make another 2 pumps and repeat the cycle until all the water comes out of the tank and then check what's the air pressure, it has to be between 6 to 7 PSI max with no more water coming out.

We ( Max Water ) are not responsible for any damage that occurred by the user during the above proces.

21. What’s the Difference Between POU and POE Water Filtration Systems?

Point-of-Use (POU)

POU systems filter your incoming water right where you use it. That could be an individual tap, faucet or shower. POU systems encompass filters that connect to a water line under the sink, filters that attach to your faucet, and even filtration pitchers you fill with water.

Point-of-Entry (POE)

POE water filtration systems are also known as “whole home” systems because they filter all the water that comes into your home or business. These systems attach to the main line where water enters your home and filter all of it before it reaches any sinks or showers.

22. Please Check These Things

check your Pre-filters

check your membrane

check your Tank

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