US Water Systems USCRO-350 User manual

Installation and
Operation Manual
US#Water#350#&#700#GPD##
Light#Commercial#RO#Systems!
!
!
!
!
!
INSTALLERS: PLEASE READ ALL INSTRUCTIONS BEFORE IN-
STALLING AND USING THIS SYSTEM.
IT IS RECOMMENDED TO WAIT UNTIL THE ENTIRE SYSTEM IS
PRESSURIZED AND RE-CHECK FOR ANY LEAKS BEFORE LEAV- ING
INSTALLATION SITE.
IT IS NORMAL FOR SOME BLACK CARBON FINES TO APPEAR IN
THE WATER WHEN EMPTYING THE FIRST 2 TANKS OF WA- TER.
THE FIRST 2 TANKS OF WATER PRODUCED SHOULD BE EMPTIED
AND NOT USED.
REVISION # 3
REVISION DATE June 4, 2014

2
Table of Con ten ts
Specifications
PAGE
2
How Your System Works
2
Before You Start
3
Installing Tubing Into Fittings
3
Installing the Membrane
3
Installing the Filters & Connections
4
Electrical Diagrams
5
Flow Diagrams
6
Parts List
7
Trouble Shooting
8
Warranty
8
Sp ecifi ca tion s
Model
Max.#
Permeate#
Flow#1
Recovery# %
Rejection#2
Qty !
Membranes
Operating !
Pressure
1# Stage
2nd# Stage
Dimensions#
HxWxD#
Inches
Connections
Voltage
USCRO'350
350! GPD
33%!'! 50%
>! 95%
1
120! PS I
10"!5! Micron
10"! GAC
18!X!11!X! 9
3/8! TUBE
115V
USCRO'700
700! GPD
33%!'! 50%
>! 95%
1
120! PS I
20"!5! Micron
20"! GAC
29!X!15!X! 11
1/2! TUBE
115V
1! The!
ma !ximum! permea !te!flow! a !s!defined!by!the! membra !ne! s ! pecifica !tions! a !nd!the!feed! wa !ter!conditions!of!2,000!ppm! Na !Cl,!77!deg.!F,!200! ps !i! opera !ting!to! a ! tmos ! phere. !
2! TDS!rejection!
a !nd! wa !ter!recovery! a !re! va ! ria !ble! a !nd! ca !n!be! a !ffected!by! tempera !ture! a !nd!feed! wa !ter! conditions !
!
!
!
!
How Your System Works
For best results it is recommended to install the R/O
on a COLD softened water supply. The RO systems
use four stages of treatment to filter your water:
Stage 1 - Remove sand, dirt, sediment
Stage 2 - Remove chlorine, taste & odors, very fine
particulates
Stage 3 - Reduce total dissolved minerals
Stage 4 - Polish water for refined taste
If water pressure drops below 5 psi, the system will
shut down. When the pressurized storage tank
reaches 36 psi, the system (at the end of each tank
full cycle) will automatically perform a 20 second fast
flush to clean the membrane and prolong its the life
expectancy. When the tank pressure reaches 22 psi,
the system will start producing water again.
Recommended Filter Change Schedule
Your filters require changing on a regular basis. In-
structions to change them are on page 8. The sched-
ule below is the minimum recommendation. Depend-
ing on your water conditions the filters may need to
be changed more often.
Filter#Cartridges#################################Change#Schedule#
Pre'filter!(Sediment)!!!!!!!!!!!!!!!!!!!!!!!!! Every!12!months!
Pre'filter!(Activated!Carbon)!!!!!!!!!!! Every!12!months!
Post!Filter!(Activated!Carbon)!!!!!!!!! Every!12!months!
R/O!membrane!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Every!24'36!months!

3
!
!
!
Before You Star t
Your system contains filters which must be replaced periodically for proper operation. (Read all steps and
guides carefully before installing and using your RO system. Follow all steps exactly to correctly install.
The system is designed to be used on potable water supplies only. If water is non-potable, additional pre-
treatment will be required.
Do not use for the treatment of water that is visually contaminated (cloudy) or has an obvious contamina-
tion source, such as contamination by raw sewage.
All plumbing should be done in accordance with local codes and requirements.
Do not install the system outside, or in extreme hot or cold temperatures. Temperature of the water supply
to the R/O system must be between 40°F and 100°F. Do not install on hot water.
Installing Tubing I nto Fittings
Step 1
Step 2
Step 3
Cut the tube square and remove burrs and sharp edges. Ensure that the
outside diameter is free from score marks. For soft or thin walled plastic
tubing we recommend the use of a tube insert.
Push the tube into the fitting and up to the tube stop
Pull on the tube to check that it is secure. Test the system before use.
Installing the M embr an e
When handling membranes be sure hands are clean and sanitized or wear surgical gloves.
1. Remove the blue quick connect clip and pull the inlet tubing to the membrane cap out.
2. Loosen and remove RO membrane cap using wrench provided.
3. Using scissors or a knife, cut the end of the plastic wrapper from the membrane. Leave it in the wrap-
per so you do not touch the membrane directly with your fingers.
4. Insert the membrane all the way into the housing.
5. Check that the o-ring is in place and install the cap onto the RO membrane housing. Tighten cap
firmly by hand. Using the wrench provided tighten an addition 1/4 to 1/2 turn.

4
Ins ta llin g the F ilt er s & Con n ecti on s
When handling filter cartridges be sure hands are clean and sanitized or wear surgical gloves.
1. Loosen and remove filter housings using wrench provided.
2. Remove plastic wrapper from filter cartridges. Check the o-ring to insure it is lubricated. If not, use
NSF approved silicon grease. Install the o-ring into the filter housing. Install the filters into the correct
locations as indicated in Figure 1 on page 4. Insure the Carbon cartridges are installed with the rubber
gasket at the top.
3. Install and tighten the filter housings firmly by hand. Use the wrench provided to tighten an addition
1/4 to half turn. Do not over tighten.
10” 5 Micron Sediment Filter 10” GAC Carbon Filter Inlet Connection
Drain Connection

5
Electrica l Dia gr am s
USCRO-350
USCRO-700

6
Fl ow Dia g r a ms
USCRO-350
USCRO-700

7
Parts Lis t
USCRO-350
USCRO-700

8
Tr ou b le Sho otin g
PROBLEM
CAUSE
SOLUTION
No#product# water.
1.!Water!supply!is!turned! off.
1.!Turn!on!feed! water.
Not#enough#product# water.
1.!Water!supply!is! blocked.
1.!Clear! restriction.
2.!Filters!are! plugged.
2.!Replace!pre'filter!cartridge! (s).
3.!Feed!water!valve!plugged!or! closed.
3.!Open!valve!or! unclog.
4.!No!drain!flow.!!Drain!flow!restrictor! is!
plugged.
4.!Clear!or!replace!Flow! Restrictor
5.!Drain!saddle! plugged.
5.!Clear! restriction.
Pump#not# running.
1.!Low!feed!water! pressure.
1.!Check!source!water! supply.
2.!No!power!supply!or!loose! connection.
2.!Turn!on!power! supply.
3.!Transformer!burnt! out.
3.! Replace.
Pump#running#but#system# not#
producing# water.
1.!Carbon!pre'filter! plugged.
1.!Replace!filter! cartridge.
2.!Inlet!solenoid!valve!not! working.
2.!Repair!or!replace!solenoid! valve.
System#does#not#shut# off.
1.!High!pressure!switch!not! working.
1.!Repair!or!replace!high!pressure! switch.
Abnormal#pump#cycling# noise.
1.!Pre'filter!plugged!or!low!feed!water! pressure.
1.!Replace!filter!or!adjust!or!sufficient! feed!
water.
No#water#to# drain.
1.!Plugged!drain!flow! restrictor.
1.!Replace!drain!flow! restrictor.
Water#has#bad# taste.
1.!Post!filter!(CB'10)!is! exhausted.
1.!Replace!post! filter
Leaks
1.!Tubing!connections!not!installed! properly.
1.!Re'install!tubing!into! fitting.
2.!Defective! tubing.
2.!Cut!damage!section!of!tubing!and! re'install.