Cardiac Stress Treadmills Service Manual Repair/Replacement and Calibration 4-5
Replacing the Power Cord
Hard-wired Cords on Low Voltage Units
Tools: Heyco
TM
strain relief hand
pliers
1. Remove the configuration plate as described on previous page.
2. Use strain relief pliers to squeeze the strain relief on the power cord
and pull it free of the configuration plate.
3. Clip the power cord wire ties.
4. Remove the two hex nuts holding the power cord to the line filter: the
hex nuts are behind the configuration plate, down and to the right.
5. Pull the power cord out of the configuration plate.
6. Feed the new cord into the configuration plate and complete the
procedure by following steps 1 through 4 in reverse order.
♦ Twist the power leads before connecting.
♦ Connect the white wire to the bottom connector on the line filter.
7. If no other service is required, replace the treadmill hood as described
in step 9 on page 4-3.
Detachable Cords on High Voltage Units
Unplug the power cord from the connector on the configuration plate and
plug in the new cord.
Replacing the AC Drive Module
The AC Drive Module with treadmill drive board must be replaced as a
unit.
1. Remove the treadmill hood and power as described in “Removing the
Treadmill Hood” on page 4-3.
Warning! To prevent high voltage electrical shock: Before working on
or around any electrical or mechanical component under
the hood, wait at least two minutes from the time you
unplug the power cord and be sure the red LEDs on the
drive board on the AC Drive Module are off.
2. Disconnect the stress monitor cable from the AC Drive Module.
3. For TM models only: remove the four Phillips screws holding the
Digital Interface Board (see figure on next page). Carefully set board
aside.
♦ In the following steps, note the connection points and the colors of the
wires as you remove them from the drive module. All the wires are
harnessed. Cut the plastic ties to free the wires as necessary. Reference
wiring schematic.
4. Unplug the grade motor wires from the drive board on the AC Drive
Module.
To Next Page
Loading...
