Stryker PneumoSure, Service Manual, Page: 16 / 76

14
EN
Maintenance and Service Tasks
4.6.3 Checking High Pressure Regulator at the HPU
WARNING!
Discharge the pressure before removing a tube from the HPU.
1. Remove the high pressure tube (2) from the HPU outlet (see Fig. 4-5 High
pressure unit HPU, press down the plastic ring and pull out tube) and connect
a T-adapter with venting valve and 0-7 bar manometer.
2. Connect the device to a gas bottle (pressure > 50 bar) and open the bottle.
3. Relieve pressure of tube at the additionally connected outlet valve.
A stable end value of 1.5 to 2.5 bar must be reached.
NOTE!
The output value drops with an increasing temperature (e.g. long operation
time) and has to be adjusted if necessary.
Remove the test equipment and reinsert the high pressure tube
(2)
or continue
with chapter 4.6.4 Checking High Pressure Unit HPU for Leaks .
Corrective measure • Use the adjustment screw
(3)
at the high pressure regulator in case values de-
viate from the tolerance range. If this is not possible, the high pressure unit
HPU must be replaced.
Fig. 4-4 Position of adjustment screw
at HPU
(1)
High pressure unit HPU
(2) High pressure tube HPT
(3)
Adjustment screw
(3)
(2)
(1)