Tafonius
Junior
– A User Guide
Warning Messages – Alerts and Alarms
There are two levels of warning messages alerts and alarms.
Alerts
These messages are accompanied by an initial 2-second audible beep but are then silent. A
flashing text message will appear on the screen in Area 1, where the
junior
logo is
normally displayed. Alerts are non-critical events encountered during normal operation.
To clear an alert manually press and hold any of the 4 control knobs until two beeps are
heard. Here is a list of the alerts.
BATTERY1 LOW VOLTAGE and/or
BATTERY2 LOW VOLTAGE
The indicated battery has a low voltage. This is normally because the machine is being
operated without the mains connected or it has been left in storage without being connected
to the mains. Connect the mains supply and make sure the RCD/GFCI switch at the back of
the machine is on.
The alert will stay on screen until cleared. Unless the problem has been resolved the alert
will return.
MAX PRESSURE EXCEEDED LIMIT
The airway pressure exceeded the setting of the Maximum Working Pressure Limit. The
Alert will stay on screen until cleared manually.
LOW SYSTEM RESERVE VOLUME
The piston has entered the low volume zone at the 1.5L point. If this is during an active
inspiratory phase then a litre of gas will automatically be added to the breathing system
through the vaporiser. If the vaporiser is off then gas will still be added, but without agent.
Continued occurrence of this warning is an indication that the fresh-gas-flow setting is too
low and/or there may be a significant leak in the system or past the ET tube.
When the piston moves out of the low volume zone then the alert will self clear.
CYLINDER EMPTY/OUT OF RESERVE
The piston is at the lower most position, i.e. zero volume. If this is during the inspiratory
phase then the full tidal volume will not have been delivered.
When the piston moves away from the zero point the alert will self clear.
SYSTEM FULL
The piston is at the most full position i.e. maximum volume. The Dump Valve will be opened
to allow gas to escape and prevent pressure building up.
When the piston moves away from the top point the alert will self clear.
PISTON POSITION INFO ERROR
The piston position reported from the motor is incorrect. This is usually transient and is self-
correcting. Any permanent loss of position information will result in an alarm condition.
The alert will stay on screen until cleared manually.
Printed: 26/Oct/18
Page 18 of 20
DOCA4962B
