Datex-Ohmeda CAPNOMAC ULTIMA, Service Manual

Page: 154 / 232

CAPNOMAC ULTIMA
TM
SERVICE MANUAL
6-24
6.4.13
Cleaning the measuring chamber of ACX measuring unit
In case the N
2
O “zero calibration constant” in Gas Service (ULT) or
N
2
O “calib zero” in ACX Service (AM) indicates contamination of
the measuring chamber (value 61000 or more), or if the software
will stuck to the “calibrating gas sensor” state due to contamination,
it is possible to attempt the measuring chamber cleaning. However,
we recommend exchanging the measuring unit rather than cleaning.
The measuring chamber should first try to be cleaned by rinsing it
with distilled water only. If rinsing alone is not sufficient the
cleaning can be tried with DATEX-ENGSTROM Cleaning Fluid
(85969).
NOTE:
Do not use other cleaning agents such as blood gas
electrode cleaners. They may damage the unit. Use only
DATEX-ENGSTROM Cleaning Fluid (85969).
Cleaning procedure
Tools needed:
- 10 ml syringe
- water glass
- 2 pcs 30 cm silicon tubes with inner diameter of 3 mm
- screwdriver
a )
b )
c )
d)
e )
f)
g)
h )
i )
j )
Detach the measuring unit from the monitor or gas module
Attach the silicon tubes to the tube connectors on the unit
Attach the l0 m1 syringe to one of the tubes
Place the tip of the other tube into the water glass
Pour some distilled water into the glass
Suck the water into the tubing with the syringe
Leave for 15 minutes
Move the syringe piston in and out 10 times
Detach the tubes from the unit and empty the water from
the measuring chamber
Attach one silicon tube to the unit and connect the other
end of the tube to the gas outlet of the monitor or gas
module
January 15th, 1997/6