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TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PRINCIPLE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
OPERATING INSTRUCTIONS – MODELS 400, 500, 600 & 700. . . . . . . . . . . . 6
Automatic Digital Humidier Control Indicator Lights . . . . . . . . . . . . . . . 6
Blower Activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Automatic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Manual Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
OPERATING INSTRUCTIONS – MODELS 400M, 500M, 600M & 700M . . . 11
Check the Humidier Operation – Manual Humidier Control . . . . . 11
OPERATING INSTRUCTIONS – MODEL 300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Check the Humidier Operation – Manual Digital
Humidier Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
ADDITIONAL INFORMATION FOR ALL MODELS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
EFFECT OF WATER CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
ANNUAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
ANNUAL SUMMER SHUTDOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
PERIODIC PREVENTATIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
REQUIRED MAINTENANCE INSTRUCTIONS
Model 300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Models 400 & 400M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Models 500, 500M, 600 & 600M. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Models 700 & 700M. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
WARNING
• ELECTRIC SHOCK HAZARD: 120 volts may cause serious injury from
electric shock. Disconnect electrical power and water before
servicing. Leave power and water disconnected until service is
completed.
• RISK OF SCALDING. Water temperature over 125°F (52°C) can cause
severe burns and scald instantly. Shut off the hot water supply
before disconnecting or tapping into any hot water supply line.
CAUTION
SUDDEN OPERATION MAY CAUSE PERSONAL INJURY OR PROPERTY
DAMAGE. Turn the humidier control to OFF or lowest setting before
servicing.
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