Stryker PneumoSure, Service Manual, Page: 18 / 76

16
EN
Maintenance and Service Tasks
The high pressure heater is not monitored by the software. Leave the device
switched on for approx. 15 minutes. Use your fingers to feel whether the metal
block
(6) (adapter 01 for HPM) has become slightly warm. Fig. 4-6 Position of
high pressure heating unit HPH). If the metal block is not warm, check the SMD
fuse
(9) on the PCU board (7) . The fuse can be removed with a pointed pair of
pliers or a pair of tweezers.
DANGER!
Disconnect device from power supply.
Corrective Measure If the fuse is intact and the block is still not warm to the touch, the heater
(3)
and/or the LPU have to be replaced (see chapter 6.2.1 Replacing the Heater/Tem-
perature Sensor and chapter 6.3 Uninstalling/Installing Low Pressure Unit LPU).
When installing the heater
(3)
, make sure it is placed completely on the insulat-
ing foil
(5)
. Attach heater
(3)
with the fastening screw
(4)
and a plastic insulat-
ing bush.
4.6.6 Checking High Pressure Safety Valve HSV at the HPU
Replace the HPU when hearing a continuous hissing sound emitted by the HSV
when checking the high pressure regulator (HPR). A short hissing sound after the
gas supply is opened for the first time is acceptable.
Fig. 4-7 High pressure gas heater con-
nections
(7)
PCU board
(8)
Connection of heater/temperature
sensor
(7)
(8)
Fig. 4-8 Position of SMD fuse
(9)
SMD super-fast-acting fuse 2A
(10)
PCU board
(9)
(10)