Pentair PRF-RO Installation And Maintenance Manual Download Page 1

PRF-RO 
Pentair Reverse Osmosis System 
Installation and Maintenance Manual

SAFETY GUIDES

Read and follow all steps and guides carefully before installing and 

using your reverse osmosis system. 
Do not use this product to make safe drinking water from non-potable 

water sources. Do not use the system on microbiologically unsafe 

water, or water of unknown quality without adequate disinfection 

before or after the system. 
This reverse osmosis system contains replaceable components 

(membrane elements).  These components are critical for the 

effective reduction of total dissolved solids and specific contaminants 

that are listed in the Product Data Sheet.
The Reverse Osmosis System does not have a monitoring device for 

contaminants.  To verify that the system is performing satisfactorily 

the product water should be tested periodically by the system’s 

installing dealer or a certified laboratory, every six months. The 

laboratory should be certified for testing the specific contaminants of 

concern. For a listing of certified laboratories, contact local regulatory 

agencies. Within the United States, many state-run Department of 

Natural Resources or Department of Health Services maintain listings 

of certified laboratories. 
Consult your local public works department for plumbing and 

sanitation codes. Follow your local codes if they differ from this 

manual.
The reverse osmosis system works on water pressures of 40 psi   

(2.8 bar) minimum to 80 psi (5.5 bar) maximum. Water pressure can 

be reduced by installing a pressure reducing valve in the water 

supply pipe to the RO system. A booster pump should be used for low 

pressure applications.
Do not install the reverse osmosis system in extreme hot or cold 

temperatures. Temperature of the water supply to the reverse 

osmosis system must be between 40°F (4°C) and 100°F (38°C). Do not 

install on hot water lines.
The reverse osmosis membranes contain a foodgrade preservative 

for storage and shipment.  All new membranes require a minimum  2 

hour rinse to properly rinse out the preservative. The preservative 

is not harmful but makes the product water taste objectionable. 

Rinsing the membrane also acts a performance conditioner. All new 

membranes will reach their stable maximum performance after 8 

hours of rinsing.

THE BASIC REVERSE OSMOSIS SYSTEM

Your Reverse Osmosis System is a water treatment unit. It uses water 

pressure to reverse a natural physical process called osmosis. Water, 

under pressure, is forced through a semi-permeable membrane to 

filter out minerals and impurities. Treated drinking water goes to the 

faucet. Minerals and impurities are sent to the drain with RO waste 

water.
The system includes replaceable filters and membrane elements. The 

prefilter reduces sand, silt, dirt, rust particles, other sediments, and 

chlorine from the water supply before they enter the RO membrane 

elements. The postfilter reduces any tastes and/or odors that 

may remain in the water after passing through the RO membrane 

elements.

BEFORE INSTALLING THE RO SYSTEM

• 

Best performance of the system will be achieved when the 

incoming water has been treated (softened).

• 

The water coming into the system must be within certain limits 

for sediments, pressure, etc. Refer to the specifications to 

determine if your installation is within the limits.

• 

A water quality analysis can be performed to determine if 

incoming water requires any treatment. Contact your dealer/

installer.

• 

The filters and membrane elements in the RO system need 

to be replaced on a regular basis. Follow the instructions for 

replacement that are in this manual.

NOTE: For optimal system performance, use the system for at least 2 

minutes continuously each day.

WARNING:

 The RO system is designed to work without the 

aid of a pressurized storage tank. Installation of 

a pressurized storage tank will negatively affect 
system performance.

Tools and Materials Required

• 

Adjustable wrench, and larger adjustable jaw pliers or pipe 

wrench to fit sink drain

• 

Saw for cutting drain pipe

• 

Slotted and Phillips head screwdrivers

• 

Tubing cutters

• 

Electric drill and bits for cutting the faucet mounting hole

NOTE: Note that some sinks will have a pre-drilled hole with a 

plug for the faucet.

4000413 Rev B     JE10

Summary of Contents for PRF-RO

Page 1: ...properly rinse out the preservative The preservative is not harmful but makes the product water taste objectionable Rinsing the membrane also acts a performance conditioner All new membranes will reac...

Page 2: ...W TUBING INSTALL KIT PN 1255736 3 8 BLACK TUBING 4 ft 3 8 BLUE TUBING 4 ft 1 2 NATURAL TUBING 4 ft 1 2 RED TUBING 3 ft SILICONE LUBRICANT FEED DISCONNECT ELBOW WHITE PN 3035307 1 pc PERMEATE DISCONNEC...

Page 3: ...Coupling Install above P trap Locking Bar Keep to Minimum Prefilter RO Membrane Support Leg sump wrench Manifold Elbow Connectors Feed Pressure Gauge Drain Point A suitable drain point is needed for r...

Page 4: ...Air Gap Required Inlet 1 2 Natural Drain 3 8 Black Feed Water Valve Cold Water Line Only Carbon Postfilter Product 3 8 Blue RO Assembly Keep to Minimum THE BASIC REVERSE OSMOSIS SYSTEM cont Figure 3...

Page 5: ...Line Only Feed Pressure Gauge RO Assembly External Prefilter Product Storage Tank To Point of Use Vented to Atmosphere Liquid level float sensor to control feed solenoid valve Feed Solenoid Valve Figu...

Page 6: ...d that there is space underneath for tubing 2 If drilling is needed make a 1 1 2 inch diameter hole WARNING To avoid damaging a sink consult a qualified plumber or installer for the proper method of d...

Page 7: ...cure the connection NOTE When sliding tubing into the drain adapter inlet wet the tubing Water will help the tubing slide into the rubber inlet Feed Pressure Gauge The supplied pressure gauge can be c...

Page 8: ...ng instructions describe the method and locations for lubrication Six packets of silicone lube are supplied One packet should be completely used to lubricate the O ring contact surfaces in the 3 manif...

Page 9: ...eats in the manifold that come in contact with the sump and element O rings Refer to Connection Lubrication on page 8 NOTE To properly lubricate the O ring contact area a film of clean silicone grease...

Page 10: ...ening the faucet CAUTION Even with the water supply turned off the membrane and prefilter sumps will contain a considerable amount of water By positioning the RO assembly in a sink or tub most of the...

Page 11: ...ubing back approximately 1 4 inch prior to connecting the new postfilter Make sure flow direction arrow aligns with water path Reinsert tubing and collect locks 11 Re connect the fittings to the manif...

Page 12: ...78 C Inlet TDS 50 mg L 2 000 mg L Inlet Hardness 0 mg L 0 grain 171 mg L 10 grain Inlet Chlorine 0 mg L 1 0 mg L Inlet Iron 0 mg L 0 1 mg L Inlet Manganese 0 mg L 0 05 mg L Inlet pH 4 10 Inlet Turbidi...

Page 13: ...f flow into the postfilter is acceptable replace postfilter Leak or kink in product line Find and repair leak or kink Concentrate water runs to drain after faucet shut off Plugged prefilter Replace pl...

Page 14: ...14...

Page 15: ...15...

Page 16: ...2010 Pentair Residential Filtration LLC 4000413 Rev B JE10...

Reviews: