Watts R12-0150, R12-0250, R12-0600, R12-1200 Installation And Operation Manual

REVERSE OSMOSIS

INSTALLATION AND OPERATION MANUAL

R12-Wall Mount

IMPORTANT

Please read the entire manual before proceeding with the installation and startup:

 Do not use where the water is microbiologically unsafe.

 Always turn off the unit, shut off the feed water, and disconnect the electrical power when

working on the unit.

 Never allow the pump to run dry.

 Never start the pump with the reject valve closed.

 Never allow the unit to freeze or operate with a feed water temperature above 100°F.

NOTES

Changes in operating variables are beyond the control of Watts. The end user is responsible for
the safe operation of this equipment. The suitability of the product water for any specific
application is the responsibility of the end user.

Successful long-term performance of an RO system depends on proper operation and
maintenance of the system. This includes the initial system startup and operational startups and
shutdowns. Prevention of fouling or scaling of the membranes is not only a matter of system
design, but also a matter of proper operation. Record keeping and data normalization are
required in order to know the actual system performance and to enable corrective measures when
necessary. Complete and accurate records are also required in case of a system performance
warranty claim.

Changes in the operating parameters of an RO system can be caused by changes in the feed
water or can be a sign of trouble. Maintaining an operation and maintenance log is crucial in
diagnosing and preventing system problems. For your reference, a typical log sheet is included
in this manual.

TABLE OF CONTENTS

I. Introduction

A. Specifications
B. RO Overview
C. Pre-treatment

II. Controls, Indicators, and Components

III. Operation

A. Installation
B. Plumbing Connections
C. Electrical
D. Startup
E. Control Function
F. Operation and Maintenance Log
G. Troubleshooting

IV. Replacement Parts List

V. Membrane Replacement

VI. Appendix

Temperature Correction Factors

I. INTRODUCTION

The separation of dissolved solids and water using RO membranes is a pressure driven
temperature dependent process. The membrane material is designed to be as permeable to water
as possible, while maintaining the ability to reject dissolved solids.

The main system design parameters require the following:

 Internal flows across the membrane surface must be high enough to prevent settling of fine

suspended solids on the membrane surface.

 The concentration of each dissolved ionic species must not exceed the limits of solubility

anywhere in the system.

 Pre-treatment must be sufficient to eliminate chemicals that would attack the membrane

materials.

A. SPECIFICATIONS

Maximum Productivity (Gallons per day)
Quality (membrane rejection) 98 % 98 % 98 % 98 %
Recovery (user adjustable) 15 - 75 % 15 - 75% 15 - 75 % 30 - 75 %

Membrane Size
Number Of Membranes
Prefilter (System ships with one 5 micron cartridge)
Feed Water Connection
Product Water Connection (Tubing OD) 3/8”
Reject Water Connection (Tubing OD) 3/8”
Feed Water Required (Maximum) 2.4 gpm
Feed Water Pressure (Minimum) 10 psi
Drain Required (Maximum) 2.4 gpm
Electrical Requirement
Motor Horse Power
Dimensions W x H x D (approximate inches)

Shipping Weight (estimated pounds)

R12-0150 R12-0250 R12-0600 R12-1200

150 250 600 1200

2.5” x 14” 2.5” x 21” 2.5” x 40” 2.5” x 40”
1 1 1 2

10”

1/2” NPT

120 VAC 60 Hz 8 amps

1/2

22 x 32 x 12 22 x 52 x 12

50 50 60 70