Nimbus Water Systems CS-2 User manual

1
42445 Avenida Alvarado, Temecula, CA 92590
[phone], www.nimbuswater.com
REV: 0507
Nimbus CS-2
Reverse Osmosis System
03/13
42445 Avenida Alvarado
Temecula, CA 92590
800-451-9343, FAX [phone]
www.nimbuswater.com

2
42445 Avenida Alvarado, Temecula, CA 92590
[phone], www.nimbuswater.com

3
42445 Avenida Alvarado, Temecula, CA 92590
[phone], www.nimbuswater.com
Congratulaons on your purchase of the Nimbus CS-2 reverse osmosis system. When properly maintained, this system will
provide you with years of trouble-free service. The next secons contain important informaon on the proper care and
maintenance of your system, please take a few minutes to read through this informaon.
The cartridges in this system must be replaced on a regular basis to maintain efficiency and to safeguard water quality.
These cartridges work together to remove potenal contaminants from your tap water and must be replaced every 6-12
months. Any significant change in performance of the system should be invesgated promptly to avoid secondary damage
or deterioraon to other parts of the system.
Introducon to the CS-2
Descripon Replacement
Interval
RO Membrane Desalinator 12 months
Pre-filter 6-12 months
Post-Filter 12 months
Tested at 60 psig (4 bar), 500ppm TDS municipal water, 77°F
(25°C)
Feed Water Requirements
System Specificaons
Replacement Cartridges
Membrane System w/Tank
Producon 36 GPD
(136.3 LPD)
11.3 GPD
(42.8LPD)
TDS Rejecon 95% 95%
Pressure 40-80 psi (275 kPa - 552 kPa)
Temperature 40°F - 100°F (4°C - 38°C)
TDS <2000 mg/L
Chlorine <1.0 mg/L
NTU <1
SDI <5
pH 4-8
Feed water must be potable, municipal water. Must be free
of potenal membrane foulants such as Iron, Hydrogen
Sulfide and Manganese.

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42445 Avenida Alvarado, Temecula, CA 92590
[phone], www.nimbuswater.com
The Limited Warranty extends to the original purchaser of the system. This warranty covers all parts and factory labor needed to repair any Man-
ufacturer-supplied item that proves to be defecve in material, workmanship or factory preparaon. The above-menoned warranty applies for
the first full calender year from date of purchase. These defecve items are subject to the following exclusions: membranes, filters, O-rings, and all
other parts or components that require regular replacement as a result of ordinary usage.
Disclaimers This Warranty applies only if the system is installed and used in compliance with the instrucons enclosed with the system.
This Warranty does not cover the costs of repairs or adjustments to the unit that may be needed because of the use of improper parts, equipment
or materials. This Warranty does not cover repairs required due to unauthorized alteraons of the unit, or failure of a unit caused by such altera-
ons or by unauthorized repairs.
The Warranty does not cover malfuncons of the unit due to tampering, misuse, alteraon, lack of regular maintenance, misapplicaon, fouling due
to hydrogen sulfide 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 in excess of 0.5 ppm. In addion, damage to the unit due to fire, accident, negligence, act of God, or
events beyond the control of the Manufacturer are not covered by this warranty.
Incidental and Consequenal Damages The Manufacturer does not assume responsibility for payment of incidental and consequenal damages as
a result of the failure of this unit to comply with express or implied warranes, such as lost me, inconvenience, damage to personal property, loss
of revenue, commercial losses, postage, travel, telephone expenditures, or other losses of this nature. Some states do not allow the exclusion or
limitaon of incidental or consequenal damages, so this exclusion may not apply to you.
Owner’s Warranty Responsibilies Under the provisions of the Warranty, the owner is expected to schedule maintenance, as described in this
Manual. Neglect, improper maintenance, abuse, or unapproved modificaons may invalidate the Warranty. Should your unit develop a defect or
otherwise fail to perform in accordance with this warranty, you should contact the dealer from whom the product was originally purchased.
Implied Warranes The implied at-law warranes of merchantability and fitness for a parcular purpose shall terminate on the date one year aer the
date of purchase. Note: some states do not allow limitaons on how long an implied warranty lasts, so the above limitaons may not apply to you.
Other Rights This Warranty gives you specific legal rights and you may also have other rights which vary from state to state.
Model:
Date Code:
Install Date:
Sold by:
Installed By:
Service Center
Phone Number:
Please fill out the form below and retain for future reference.
Nimbus CS-2
Warranty

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42445 Avenida Alvarado, Temecula, CA 92590
[phone], www.nimbuswater.com
This system has been designed for installaon by a licensed professional such as a contractor or plumber. Proper compleon of this installa-
on will require basic familiarity with standard sink plumbing and proper use of common hand and power tools. Improperly installed systems
could result in water damage due to leaks or flooding. Do not use with water that is microbiologically unsafe.
Typical Installaon Diagram
A. Product water storage tank
B. Tank shut-offvalve
C. Tank tubing
D. Air-gap faucet
E. Drain connecon assembly
F. Drain tubing
G. Quick-connect fing
H. Product water tubing
I. Membrane desalinator
J. Carbon post-filter
K. Sediment/carbon pre-filter
L. Automac shut-offvalve
M. Inlet fing
N. Feed water tubing
O. Feed water shut-off
A
B
C
D
EF
GI
JK
L
M
N
O
F
H

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42445 Avenida Alvarado, Temecula, CA 92590
[phone], www.nimbuswater.com
CS-2 Push Handle Faucet
For easier installaon, aach all tubing prior to mounng the
faucet.
1. Insert polished faucet base onto base of faucet.
2. Push the 1/4” drain tubing onto the 1/4” barb fing. This tube
must be of sufficient length to reach the white swivel with yellow
collet on the membrane desalinator.
3. Push the 3/8” tubing onto the larger 3/8” barbed fing, being
sure you have enough tubing to reach the drain saddle.
4. Slip the 1/4" and 3/8" tubing though opening in polished faucet
base. Slide white plasc spacer open-end-up onto the threaded
faucet stem (2).
5. Thread the 3/8" washer (3) and mounng lock nut (4) onto the
threaded stem. (Fig 6)
6. Thread faucet quick-connect adapter (5) on to threads of faucet
stem. NOTE: This connecon should be hand-ghtened only. Push
one end of product tubing into connecon.
7. Insert tubing and faucet assembly down through the sink hole.
8. Posion the faucet to the desired handle orientaon. Slip the
sloed washer (1) between the white plasc spacer and the sink.
Securely hand ghten the mounng nut.
9. Connect the 3/8” tubing to the drain saddle assembly using the
drain connector nut supplied. This tubing should follow as direct a
path as possible; long runs, looping or deep sags will restrict nor-
mal brine flow to the drain. Save the unused poron of the tubing
for the installaon of the storage tank.
10. Apply a small amount of silicone-based lubricant to the O-rings
located at the base of the spout. Firmly insert spout assembly into
the top hole of faucet body (approximately 1/4"). You may swivel
the faucet leor right.
Airgap to system drain
(1/4" tubing)
Faucet to drain
saddle (3/8" tubing)
Product water
(1/4" tubing)
Metal base plate
Rubber seal
1
2
3
4
5
Connect to product
water tubing

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42445 Avenida Alvarado, Temecula, CA 92590
[phone], www.nimbuswater.com
CS-2 Feed and Drain Connecons
Feed Connecon
1. Locate and turn offthe angle stop valve on the cold water line feeding the sink. This valve will
usually be located under the sink on the pipe coming out of the wall.
2. When the angle stop valve is closed, relieve pressure in the line by momentarily opening the
cold water tap on the sink.
3. Disconnect the cold water faucet feed line at the angle stop valve.
4. Install the feed valve assembly into the angle stop. (Fig. 1)
5. Firmly press the green 1/4” tubing into the 1/4" connector on the feed valve assembly.
6. Connect the cold water faucet feed line into the feed valve assembly.
7. Make sure the small shut-offvalve on the feed valve assembly is closed. Turn on the feed water
connecon valve. Check for leaks.
7. Aach the small feed valve warning tag from the parts bag to the feed valve.
8. Aach the ShutoffWarning label to the system so that it is directly visible. Fill out the Date of
Installaon label and aach to the side of the system.
Drain Connecon
1. You will need an electric drill with a 3/8” bit and a screwdriver for this poron of the installa-
on.
2. Obtain the drain saddle assembly, two 1 ½” bolts, two 3/8” hex nuts, and the small adhesive
foam pad from the small parts bag (Fig. 2).
3. Place the adhesive foam pad on the inside of the the drain saddle front, aligning the holes.
4. Posion the drain saddle on the drain pipe under the sink between the “P” trap and the sink
connecon. Orient the drain saddle so that the opening is on the side of the drain pipe.
5. Using the bolts and hex nuts, hand ghten the saddle bracket evenly unl the saddle grips the
pipe snugly. Use a Phillips screwdriver to fully ghten the bolts. Do not overghten.
6. If necessary, remove the drain saddle connector nut from the opening of the drain saddle.
Using the connector opening in the side of the drain saddle as a guide, drill a 3/8" hole through
the wall of the drain pipe.
7. Extend the drain tubing from the RO dispensing faucet to the drain saddle and measure for
length. The tubing must be routed so that water can run downhill for the enre length of the
tubing from the faucet. Avoid low spots or loops. Cut the tubing shorter, if necessary.
8. Insert the drain tube from the R.O. dispensing faucet through the drain saddle connector nut.
Tighten the connector nut onto the drain saddle.
Fig. 2
Note: The drain saddle
assembly must be
installed before the 'P'
trap. Do not install the
drain saddle assembly
between the 'P' trap
and the wall.
Adapter
Shut-offvalve
Fig. 1
Note: The feed valve
adapter may be
configured to fit either
a 3/8" or 1/2" angle
stop connecon by
changing the locaon
of the adapter.
Angle stop

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42445 Avenida Alvarado, Temecula, CA 92590
[phone], www.nimbuswater.com
CS-2 Tubing Connecons
1. Measure and cut a length of 1/4" or 3/8" tubing (depending on model) long enough to reach from the faucet to the
faucet connector on the system. Connect one end to the faucet nipple using a jaco nut and plasc insert. Connect the other
end to the faucet connecon on the post-filter suing a jaco nut and plasc insert.
2. Measure and cut the length of 1/4" tubing long enough to reach from the feed water supply to the inlet. Connect the
end to the feed inlet on the prefilter using a jaco nut and plasc insert. See Fig. 5.
3. Connect one end of a 3/8" length of tubing to the tank valve. Insert the other end firmly into the quick-connect cross on
the shut-offvalve.
4. Connect the 1/4" tubing from the faucet to the white swivel with yellow collet on the membrane desalinator.
5. Connect the free end of the 3/8" drain tubing to the drain connecon.
Fig. 5
INSERT
FERRULE
COMPRESSION NUT
TUBING

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42445 Avenida Alvarado, Temecula, CA 92590
[phone], www.nimbuswater.com
System Acvaon and Inspecon
1. Check all tubing connecons to ensure they are firmly seated and secure.
2. Open the dispensing faucet at the sink. Close the tank shut-offvalve.
3. Open the feed water valve to the system. Observe all tubing and connecons for several minutes to detect any leaks.
In approximately 5 minutes, (assuming normal feed water pressure) the dispensing faucet should begin dripping.
4. Place a pan or other temporary water basin near the drain 'P' trap. Loosen the connector nut holding the 3/8" tube
in the drain saddle connector. Pull the tube out of the connector and use the pan to catch any water that may spill. Brine
water should be flowing from the tube. Reconnect the tube to the drain saddle and hand-ghten the connector nut.
5. Allow the faucet the run for up to 15 minutes, then close the faucet.
6. Check for leaks at all connecons.
7. Open the tank shut-offvalve.
Inial Flushing Procedure
1. Before the system can be used for drinking water producon it must be adequately flushed. Each reservoir tank is
dosed with a small amount of powdered sanizer before shipment, typically a chlorinang agent, in order to ensure tank
internal cleanliness. Also, the carbon filter cartridge will release a small amount of carbon fines during the first tankful of
flow. This flushing procedure will allow any sanizer or carbon fines to pass from the system.
2. Inial tank filling will take approximately one hour (based on average feed pressure). When the tank is full, the water
pressure will have risen to the point where the automac shut-offvalve inside the system will stop the feed flow through
the system. Actuaon of the automac shut-offvalve can be determined by either checking for a lack of brine flow to the
drain saddle, or by listening very closely near the dispensing faucet for absence of water flow sound though the air gap.
When the tank has filled for the first me, it should be leundisturbed for at least 8 hours to ensure proper sanizaon.
3. Aer 8 hours has elapsed, open the dispensing faucet fully and allow the product water to run out to drain at maximum
flow. The inial discharge will be dark with the bulk of the carbon parcle wash out. There may also be the scent of chlo-
rinated water from the sanizing agent. When the flow has diminished to a fast drip or small stream, close the dispensing
faucet.
4. Fill and flush the tank at least three mes prior to use. If necessary, repeat unl the chlorinaon scent has disappeared.
It is important that the flush be done at maximum flow (e.g. the tank must be full) to assist in rapid wash out. Aer this
flushing procedure the system is ready for normal use.
Acvaon and Flushing

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42445 Avenida Alvarado, Temecula, CA 92590
[phone], www.nimbuswater.com
1. System is located where it will not be subject to physical impacts or rough contact by heavy objects.
2. Feed water pressure to the unit is no less than 40 psi and no greater than 80 PSI.
3. All tubing connecons, especially push-in quick connecons, are fully inserted.
4. Tubing connected between the faucet and the drain saddle fing (the fing aached to the sink drain pipe) runs
"downhill" to the drain. There should be no loops or places where water would not flow out to the drain.
5. Feed water valve is open.
6. Within one to two hours aer inial applicaon of water pressure, check again for leaks especially at the tank, faucet
tubing and connectors. These parts will not see full pressure unl approximately 2 hours aer the system is acvated.
7. Flush three tankfuls of product water to drain. If a chlorine scent persists, repeat flushing procedure.
CS-2 Installaon Checklist

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42445 Avenida Alvarado, Temecula, CA 92590
[phone], www.nimbuswater.com
Desalinator Replacement
1. Close the feed water shut-offvalve and close the tank shut-offvalve.
2. Open the dispensing faucet to relieve system pressure. Close dis-
pensing faucet when flow has stopped.
3. Remove old desalinator from clips on frame. Install new desalinator
on frame.
4. Remove feed tube from old desalinator and insert it in the (green)
feed connector of the new desalinator. See Figure 6.
5. Repeat tube removal and replacement steps for product and drain
tubes.
6. Turn on feed water shut-offvalve and open dispensing faucet.
7. Close dispensing faucet aer water starts running.
8. Observe system for any leaks, especially at newly replaced cartridge.
9. Open the tank shut-offvalve.
10. The system should be flushed at least once as described above under
Secon 8.
Filter Replacement
1. Close the feed water shut-offvalve and close the tank shut-offvalve.
2. Open the dispensing faucet to relieve system pressure. Close dis-
pensing faucet when flow has stopped.
3. Remove the prefilter housing by turning it clockwise (when viewed
from above). Remove old prefilter from housing and discard. Remove
O-ring from top of housing. Wash O-ring and housing. Replace O-ring in
groove at top of housing. Insert new filter. Replace housing into cap by
turning counter clockwise. (When viewed from above).
4. Repeat Step 5 for posilter.
5. Turn on the feed water valve and open the tank shut-offvalve.
6. Observe system for any leaks, especially at newly replaced cartridge.
7. The system should be flushed at least once as described in System
Acvaon and Flushing.
CS-2 Maintenance
To Drain
(Yellow Collet)
Fig. 6
Feed
(Green Collet)
Product
(Blue Collet)