Permobil M1 Service Manual page 131

Permobil M1
6. After overinflating the cushion, have the user sit on it. Make sure
the bony prominence is supported by the air cells.
7. Slide your hand between the cushion and the user's buttocks.
8. Lift the user's legs slightly and feel for the lowest bony prominence.
9. Lower the user's leg to a sitting position.
10. Turn the valve counterclockwise to let out air while keeping your
hand underneath the user's lower bony prominence.
11. Release the air until your fingertips are just able to move.
12. Turn the air valve clockwise to close.
13. Repeat these steps for the remaining air valve on dual valve cushion
inserts.
Seat ROHO® QUADTRO SELECT®
Checking pressure
A daily check by hand is recommended to ensure the cushion is
properly inflated.
The cushion is most effective when there is no more than 1" and no less
than 1/2" of air maintaining 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 zones
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 there is no more than 1" and no less
than 1/2" of air maintaining between the cushion insert and the user's
lowest bony prominence.
1. Turn the air valve counterclockwise to open.
Figure 385. Check pressure.
Figure 386. Check pressure.
Figure 387. Check pressure.
Figure 388. Open valve.
Adjustments
131