Stryker PneumoSure, Service Manual, Page: 14 / 76

12
EN
Maintenance and Service Tasks
4.4 Condition of Tubes
Check all tubes for damage and proper fit. Replace any tube(s) suspected of leak-
ing, brittleness, or other damages.
4.5 Condition of Electronics Boards
To preserve the safety of the device, replace any boards showing corrosion or oth-
er damage at contact or soldering points.
4.6 Checking the High Pressure Unit HPU
High pressure unit The high pressure unit includes:
• Gas inlet filter
• High pressure sensor HPS
• High-pressure regulator HPR
• High pressure gas heating HPH
• High pressure safety valve HSV
4.6.1 Checking Gas Supply Connection/Gas Inlet Filter
Soiling The gas inlet filter
(3)
may be plugged or soiled due to unclean gas or gas supply
residues (see Fig. 4-1 Gas supply connection). This type of soiling, however, can-
not be detected externally. Heavy soiling is especially noticeable during higher
flow rates and results in the actual gas flow falling short of the nominal gas flow
during active insufflation. If cleaning the surface of the gas inlet filter does not
yield any improvement, the gas supply connection
(1) must be replaced in its en-
tirety (see chapter 6.1 Uninstalling/Installing Gas Supply Connection).
WARNING!
Make sure to exchange the gas supply connection US with a gas supply connec-
tion for house gas when connection to a house gas supply. Otherwise, the device
exhibits the behavior described above.
Fig. 4-1 Gas supply connection
(1)
Gas connection US
(2)
Wrench flat WS24
(3)
Gas inlet filter
(1)
(3)
(2)