Cardiac Science ST 55 Service Manual page 5

Contents
Vacuuming Under the Treadmill Hood ................................................. 4-3
Frequency........................................................................................ 4-3
Replacement Schedules .......................................................................... 4-3
Electrical Testing ................................................................................... 4-3
Chapter 5: Repair/Replacement and Calibration
Electrical Shock...................................................................................... 5-2
Burns ..................................................................................................... 5-2
Mechanical Hazards ............................................................................... 5-2
Tools...................................................................................................... 5-3
Removing the Treadmill Hood .............................................................. 5-4
Replacing the Configuration Plate ......................................................... 5-6
Replacing the Power Cord ..................................................................... 5-7
Hard-wired Cords on Low Voltage Units ........................................ 5-7
Detachable Cords on High Voltage Units ....................................... 5-7
Replacing the AC Drive Module............................................................ 5-8
Bus Recovery System (BRS) ................................................................. 5-10
Replacing the Tensioner....................................................................... 5-11
Replacing the Poly-V Drive Belt .......................................................... 5-13
Replacing the Drive Motor .................................................................. 5-14
Replacing the Transformer................................................................... 5-16
Replacing the Grade Motor.................................................................. 5-17
Replacing the Grade Motor Chain ................................................ 5-18
Replacing the Grade Potentiometer (Pot)............................................. 5-19
Grade Pot Wires............................................................................ 5-20
Removing the Rack Gears .................................................................... 5-21
Reassembling the Rack Gears ............................................................... 5-22
Replacing a Jammed Rack Gear ........................................................... 5-23
Replacing the Pinion Shaft................................................................... 5-24
Adjusting the Grade Limit Switches ..................................................... 5-26
Walking Deck Assembly ...................................................................... 5-27
Replacing Rollers ................................................................................. 5-28
Removing the Deck Assembly from Headframe ................................... 5-29
Replacing the Walking Belt.................................................................. 5-30
Removing the Deck ............................................................................. 5-31
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