Permobil M1 Service Manual page 130

Adjustments
Seat ROHO® Hybrid Elite SR™
Checking pressure
A daily check by hand is recommended to ensure the cushion is
properly inflated.
The cushion is most effective when 1/2" – 1" of air is maintained
between the cushion insert and the user's lowest bony prominence.
1. Slide your hand between the cushion and the user's buttocks.
2. Lift the user's legs slightly and feel for the lowest bony prominence.
3. Lower the user's leg to a sitting position.
4. At the right air pressure, you will only just be able to move your
fingers.
Adjusting seat air cushion
The following tools are necessary for this task:
• 1 Hand pump.
Adjustments are allowed while the user is seated.
The cushion is most effective when 1/2" – 1" of air is maintained
between the cushion insert and the user's lowest bony prominence.
1. Turn the valve counterclockwise to open.
2. Slide the pump's rubber nozzle over the air valve and inflate the
cushion insert until it begins to arch upward slightly.
3. Pinch the pump nozzle and turn the valve clockwise to close.
4. Remove the pump.
5. Repeat these steps for the remaining air valve on dual air valve
cushion inserts.
130
Figure 381. Check pressure.
Figure 382. Open valve.
Figure 383. Arched air cells.
Figure 384. Close valve.
Permobil M1