Stryker PneumoSure, Service Manual, Page: 47 / 76

Replacing Components and Modules
45
EN
The PPV valve must be replaced if defective or malfunctioning.
DANGER!
Disconnect device from power supply.
1. Open the device as described in chapter 3.6 Opening the Device .
2. Remove the ST8 plug /cable
(4)
from the PCU board
(2)
by pulling towards
side.
3. Remove the two tubes from the PPV valve as depicted in item (5) .
4. Unscrew the 3 Phillips screws (3) and remove the PPV valve (1) from the de-
vice by pulling up together with the support plate.
5. Follow these steps in reverse for assembly. Make sure the connected tubes
are not kinked or clamped in any way when installing the PPV valve. Two dif-
ferent tube connection variations are possible, see Fig. 6-8 Tube connection
variation A and Fig. 6-9 Tube connection variation B. Align and position the
tubes as depicted in the illustration when replacing these tubes. When con-
necting to the pressure sensor
(10) , make sure to connect the tube to the up-
per connection.
The following tests have to be performed after installing a new PPV valve:
• Basic function test
• Safety test (see chapter 4.1 Safety Test)
Fig. 6-9 Tube connection variation B
(12) LPU tube connection
(13)
PPV tube connection
(14) PPV valve
(15)
PPV tube connection
(16) Tube connection pressure sensor
PPS (PCU board)
(17) Tube connection for RTP system
(17)
(15) (14) (12) (13) (16)