31-087 Rev 10/03
PSV
TM
Pressure Setting Valve
Operating Instructions
Your VARILITE™ PSV™ air-foam floatation cushion uses an innovative air valve to control the amount of
immersion for optimal pressure distribution. PSV stands for
P
ressure
S
etting
V
alve
(patent pending)
. The
VARILITE PSV makes it easy for a user or caregiver to adjust the cushion.
The PSV is marked with three pre-determined positions, labeled “1”, “2”, and “3.”. The least amount of air is
released when the number “1” appears in the indicator window. More air is released, and more immersion
occurs, as the valve is opened to positions “2” and “3”.
For best results, the initial fitting of a
VARILITE PSV
cushion should be completed by a therapist, a certified dealer
representative, or other qualified seating specialist who should determine which pre-determined position is
appropriate. (If the user falls outside the pre-determined range, the seating specialist can mark a different position
on the PSV.)
The cushion is intended to be adjusted daily. For proper adjustment, follow the steps listed below.
1.
Start with the cushion fully inflated. To inflate,
open the valve by turning it counterclockwise.
2.
Close the valve by turning it clockwise and sit
on the cushion.
3.
Open the valve by turning it counterclockwise
until the pre-determined position number
appears in the indicator window. Air will
escape until the valve automatically shuts off
(approximately 10-15 seconds).
4.
Once the valve has shut off the release of air,
close the valve by turning it clockwise. This
will prevent the inadvertent release of
additional air due to weight shifting,
transferring, manual propelling, and so forth.
5.
When finished with the cushion for the day,
open the valve by turning it counterclockwise.
Let the cushion rest fully inflated with the valve
open overnight.
Note:
To
prevent bottoming-out, never release all the air from a
VARILITE PSV
cushion
.
Open
Close
Indicator
Window
