iSpring Commercial Grade Under Sink Water Filter System User Manual
- June 7, 2024
- iSpring
Table of Contents
US21B USER MANUALVer.08/2019
Copyright ©2005-2020 ISPRING WATER SYSTEMS, LLC. All rights reserved.
Product Specifications
Model | US21B |
---|---|
Flow Rate | 3 – 15 GPM |
Peak Flow Rate | 15 GPM |
Minimum Working Pressure | 40 psi |
Maximum Working Pressure | 90 psi |
Operating Temperatures | 40-100 2F (4 – 37 2C) |
pH Range | 2-11 |
Component List
Part | Description | Qty |
---|---|---|
System Bracket with Caps | Metal bracket with 1″ NPT inlet/outlet Black caps | 1 |
Housings | Big Blue Housing Model # HB18B | 2 |
Cartridges | 1″ stage GAC carbon filter /2″ stage CTO carbon block Model # | |
FGKS15B/ FC15B | 2 | |
Wrench | Housing Wrench Model # AWR3 | 1 |
Plumber’s Tape | Plumber’s Tape Model# ATAPE | 1 |
Installation Kit | 24- inch 1″ MNPT X 3/8″ MNPT push-fit hose X1 24- inch 1″ | |
MNPT X 3/8″ FNPT push-fit hose X1 Model#78014-24 and 78015-24 | 2 |
Recommended Tools and Equipment
Safety glasses | Hacksaw |
---|---|
Towels | Soldering iron or torch |
Flat head screwdriver | Adjustable wrench |
Medium Crescent wrench | Teflon tape |
Step 1 – Install Water Supply Connector
1.1 Turn off the cold-water line under your sink. Open the kitchen faucet to
release any pressure and ensure the water has stopped before proceeding. You
can use a towel or bucket to catch any water drips.
1.2 The system comes with a complimentary quick installation kit that connects
the system to the existing under sink water supply. Disconnect the cold water
line from the water inlet with a wrench.
1.3 Connect both hoses to the
system by screwing the 1” Male NPT into the female thread on both ends of the
system. 7801524(Hose A) should connect to the incoming line, while
78014-24(Hose B)should connect to the outgoing line. To secure the connection,
wrap 3-4 rounds of plumber’s tape(included) on the male threads to prevent
leaks.Do not overtighten.
1.4 Connect the 3/8” female threads of Hose A to the incoming water adapter.
Then screw the 3/8” male threads of Hose B to the cold-water line of the
kitchen faucet. Again, use plumber’s tape on all male threads and avoid over-
tightening.
1.5 Hose installation is now complete, butdo not turn on the water supply.
Remove both housings with the housing wrench(included) and proceed to the next
steps.
Step 2 – Install Filters
2.1 Verify that the O-ring is properly seated inside the groove on top of the
filter housing. A light amount of food-grade, silicon jelly may be used to
help the O-ring seal better if desired but is not required.
2.2 The filter cartridges are preserved in shrink wrap. Note the direction
sign on the sticker prior to removing the wrap.
2.3 When placing the filter cartridge into the housing, make sure it is
centered and the protruding knob at the bottom of the housing fits securely in
the filter’s central hole.
2.4 Screw the housing, with
filters attached, onto the cap, which should also have a center knob that
should be inserted into the center hole of the filter cartridge. Turn the
housing in a clockwise direction by hand, then use the housing wrench to
tighten it another 1/4 – 1/2 of a turn and ensure it is snug. Do not over-
tighten. This can cause leaks and make it difficult to unscrew the housing
when replacing filters.
2.5 Slowly turn on water main to fill the housing. After a few minutes, the
sound of water entering the system will stop. Check for leaks to verify the
system is operating properly. Open the COLD-water faucet and run water for
about 10 minutes to expel any carbon fines. Let the unit sit for several
minutes, then repeat if necessary.
2.6 Turn off the faucet, and your system is now ready for use.
NOTICE |
---|
The water will have a blackish color for the initial flush. This is caused by |
residual carbon dust and is to be expected. Continue to run water until the |
color runs clear and all air has been purged. It is not unusual for the water |
to appear “cloudy” for a day or so following installation. This cloudiness is |
actually tiny air bubbles being purged from the filters. This is normal and |
will cease after a few days of operation. |
NOTICE |
---|
After prolonged periods of nonuse (such as a vacation), it is recommended that |
the system be flushed thoroughly for at least 10 minutes prior to use. |
Maintenance Instructions
Your iSpring US21B under-sink water system requires periodiccare and cleaning throughout its lifetime. It is recommended that the cartridges be replaced every 12-24 months, depending on the number of contaminants present in the water supply. If the system has been functioning properly and the pressure is slowing, this could indicate that it is time to change the filter cartridges.
Replacement cartridges and parts can be ordered online at www.123filter.com or by calling 678-261-7611.
Filter Change Instructions
Step 1- Remove Old Cartridges
1.1 Turn off the water supply to the system. Open a nearby faucet to release
the remaining pressure and drain the water.
1.2 Unscrew the housings using the filter wrench included (AWR3) with your
system, or a commercially available “strap” type wrench.
1.3 Locate and remove the large O-ring using a small, clean flat head
screwdriver. Avoid removing any of the lubricant, and set it aside in a clean,
safe place.
1.4 Remove and discard the old filter cartridges.
Step 2- Clean the Housings
2.1 Scrub the housings and caps with a mixture of warm water and about 2
tablespoons of household bleach using a sponge or soft rag. For your safety,
wear rubber gloves. Rinse all parts very thoroughly!
2.2 Lubricate the O-ring with clean silicone grease if needed. DO NOT USE
PETROLEUM JELLY. Insert the O-ring into the filter groove and press into
place. Verify the O-ring is seated correctly.
CAUTION :
This step ensures the proper filter seal. Make sure the O-rings (ORB) are
level when seated in the groove. If the O-ring appears damaged, stretched, or
crimped, it should bereplaced immediately.
Step 3- Install the New Cartridge
3.1 Remove the new filter packaging and insert the filter cartridges into the
housings, making sure they slip over the bottom standpipe.
3.2 Align the bottom of the housing with the cap and hand tighten, then use
the filter wrench (AWR3) until snug.Do not over-tighten.
3.3 Close any open valves. Turn on the water supply slowly to allow the system
to fill with water.Inspect carefully for leaks.If a leak is found, remove the
housing and inspect the O-ring to ensure that it is seated properly, and then
retighten.
Step 4- Flush the System
4.1 Flush the system by turning on a cold-water faucet. Allow the water to run
until the air and carbon has been purged. Water may initiallyappear cloudy as
the filters and system remove trapped air. New activated carbon filter
cartridges may contain loose carbon and air bubbles after installation.
Warranty Registration
To register your product for its eligible warranty, please visit our website
at 123filter.com and go to the “Warranty Registration” 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 access and
store order information from websites other than 123Filter.com (including
Amazon, Home Depot, etc.), so 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 submit your feedback
in the notes/comments during 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 quick statement means a lot to
us. Thank you!
Contact Us
Office Hours: Mon-Fri, 8:30 am – 5:30 pm EST
Phone: (678)261-7611
Email: support@123filter.com
Warranty Registration Form
Name __
Order# __
Email _
Phone __
Address _
City
State
Zip Code _____
Model#/ Serial Number __
Plumber’s information (Optional)
To best serve our customers, we like to recommend good plumbers throughout the
USA.If you are happy with your installer, please provide their information so
that we can pass it on as a courtesy. Thank you!
Name of plumbing company used to installsystem:
Phone #: (__)-_____ of the plumbing installer.
Send to :
iSpring Water Systems, LLC
2480 Industrial Park Blvd,
Cumming, GA 30041
678-261-7611
References
- Quality Whole House Water Filters and Reverse Osmosis Water Filtration Systems by iSpring
- Quality Whole House Water Filters and Reverse Osmosis Water Filtration Systems by iSpring
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