Table of Contents
Introduction..................................................................................... 1
Important Safety Instructions .......................................................... 2
Features .......................................................................................... 3
Operation ........................................................................................ 4
Care and Cleaning .................................................................... 5 – 6
Customer Services .......................................................................... 6
Troubleshooting Installation ............................................................ 7
Examples of Possible Ducting ......................................................... 8
Ventilator Performance Calculator .................................................. 9
Ductwork Installation Guidelines .......................................... 10 – 15
Technical Information .................................................................... 16
Component Description................................................................ 17
Control PCB .................................................................................. 18
D.C. Motor .................................................................................... 19
Motor Step-down Transformer ...................................................... 20
Up Limit Switch ............................................................................. 21
Down Limit Switch......................................................................... 22
Interference Switch........................................................................ 23
Trouble Shooting................................................................... 24 – 29
Disassembly .......................................................................... 30 – 40
Access Cover................................................................................. 30
Lower enclosure front panel.......................................................... 31
Relay Board ................................................................................... 32
Lower enclosure, top cover........................................................... 33
Switch Assembly ........................................................................... 34
Step-down transformer ................................................................. 35
Interference Switch........................................................................ 36
Snorkel Assembly .......................................................................... 37
Motor ............................................................................................ 38
Slides ............................................................................................. 39
Blower assembly and support legs: .............................................. 40
Wiring Diagram ............................................................................. 41
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