Aprilaire 550, 600, 700 Thank you!

If you do not have on-line access, please mail a postcard

with your name, address, phone number, product purchased

and date of purchase to:

Research Products Corporation

P.O. BOX 1828

Madison, WI 53701

Thank you!

Your Warranty Registration information will not be sold

or shared outside of this company.

DP #10005406 25.10.03 Printed in U.S.A.

P.O. BOX 1467 • MADISON, WI 53701-1467

Contents

Main TABLE OF CONTENTS WARNING CAUTION INTRODUCTION I. PRINCIPLE OF OPERATION Page II. OPERATING INSTRUCTIONS 400, 600 & 700 Page Page Page III. OPERATING INSTRUCTIONS 550 IV. ADDITIONAL INFORMATION FOR ALL MODLES V. EFFECT OF WATER CHARACTERISTICS VI. ANNUAL MAINTENANCE VII. ANNUAL SUMMER SHUTDOWN VIII. PERIODIC PREVENTATIVE MAINTENANCE - 11 - APRILAIRE HUMIDIFIER MODEL 400 MODEL 400 - 12 - APRILAIRE HUMIDIFIER MODEL 600 MODEL 600 - 13 - APRILAIRE HUMIDIFIER MODEL 700 MODEL 700 - 14 - APRILAIRE HUMIDIFIER MODEL 550 MODEL 550 LIMITED WARRANTY Page Page Please Take a few minutes to visit us on-line at www.aprilaire.com to register your Aprilaire product. Thank you! WARRANTY REGISTRATION