MAINTENANCE INSTRUCTION
Sammons Preston CPM Unit
2
Calibration Requirements:
1. R-Flex CPM unit must be calibrated when the angle value displayed on the hand controller differs from
the actual value.
2. R-Flex CPM unit must be calibrated whenever maintenance is conducted on major components such as:
potentiometer, power supply unit, circuit board, hand-controller, etc.
3. Consider unit calibration after extended periods of storage or lack of use.
Automatic Calibration Procedure:
1. Turn the power switch to ‘OFF’ position.
2. Adjust the Thigh Support to 18” on the Femur Scale.
(See page 14 of user’s manual)
3. Hold down
EXT
key and
FLX
key simultaneously and turn on the power. The code
SEL
and
CAL
will
blink in the ‘Extension’ and ‘Flexion’ display windows on the hand controller.
4. Stop pressing the
EXT
and
FLX
keys. The unit is now automatically calibrated.
5. The R-Flex CPM unit should be observed traveling to full extension. The reading on the hand controller
in the ‘Range of Motion’ display window should read ZERO when the calibration procedure is completed.
6. After the unit is calibrated, the hand controller can be set and operated as normal.
