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5 Maintenance
5.1 Replacing the Batteries
(as required)
Replace the batteries when the low battery voltage symbol is
displayed or instrument will not power up.
1. Turn off the controller module.
2. Use the pocket driver tool (supplied) to loosen the screw that
holds the battery cover on the controller module back panel.
3. Remove the old batteries from the battery compartment, and
install new batteries noting the polarity indicators.
4. Reinstall the battery cover and tighten the screw to hold the cover
to the controller module.
5.2 Replacing the Oxygen Sensor
(yearly)
The oxygen sensor will function for one year of normal operation if
use begins before the expiration date. Replace the oxygen sensor
every year of normal use, or if the sensor cannot be calibrated or
sensor readings are erratic.
5.3 Cleaning
(as required)
Table 5
summarizes recommended cleaning methods for
Certifier
®
FA Test System components.
Table 5. Cleaning Recommendations
Component
Cleaning
Controller module
Flow modules
Carrying cases
Oxygen sensor
Oxygen sensor cables
Clean exterior as required with a clean
cloth and isopropyl alcohol, hydrogen
peroxide (3%), or ammonia (15%).
Tee
Adapters
Steam autoclave after contact with any
non-sterile breathing circuit
components, and discard if any damage
is visible.
Single use filters (high
and Low Flow
modules)
Discard after contact with any non-
sterile breathing circuit components or if
damage is visible.
