RHYTHM SERVICE MANUAL
PAGE 6.1
2009SUNRISE MEDICAL
Section 5
Troubleshooting Recline
Power Chair Will Not Drive at Full Speed
Power Recline is offered on the Rhythm. This Powered seating option Offers both Power Recline and
Power Shear and its operation is controlled by the ISM (Intelligent Seating Module).
Left
Lights
Inhibit
4
Inhibit
5
Right
Lights
123
456
Actuator
Channels
Actuator
Channels
The Power Recline System has 3 Possible Minimum angles 90, 95, 100 degrees. This angle is set
by programming. The minimum angle for each chair is based on how the chair was ordered. The ISM
(Intelligent Seating Module) calculates the degree based on the resistance of the recline actuator’s
internal potentiometer. To determine what angle your back should be calibrated to you can contact
Sunrise Customer Service to see confi rm what angle was requested when the chair was built. (Making
changes to this preset “Home Angle” will require a program change.) You can confi rm the recline
calibration using the following chart.
Recline Angle
(Degrees )
Potentiometer Resistance
(K Ohms)
Length of Act Rod
(From lower eyelet to eyelet)
(In)
Calibration Point
(81)
1 19.37
90 1.5
95 1.8
100 2.1
165 6.1 14
Section 6
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