Ranger
Blood/Fluid Warming System
9
Condition
Nothing illuminates on the
warming unit display panel.
Condition
Alarm indicator light illumi-
nates and alarm sounds,
alphanumeric display alter-
nately flashes a temperature
of 43˚C or higher and the
word “HI.”
Condition
Alarm sounds, alphanumeric
display and alarm light go
dark.
Cause
•Unit is not turned on, plugged
in, or power cord is not plugged
into an appropriate outlet.
•Unit failure.
Cause
Temporary over-temperature
condition because:
•An extreme change in flow
rates occurred (e.g., from 500
mL/min to stop flow).
•Unit was turned on and
reached set point temperature
before warming cassette
was inserted.
•Fluids were prewarmed to
above 42°C before being run
through the warming unit.
Cause
Primary controller failure.
Unit will no longer operate.
Solution
•Turn unit on. Make sure the
power cord is plugged into the
power entry module of the
warming unit. Make sure the
warming unit is plugged into
a properly grounded outlet.
•Call Arizant Healthcare
Customer Service.
Solution
•Open flow to reduce tem-
perature. Alarms will stop
when the display reads 41°C.
The unit is ready to use.
•Alarms will stop when the
display reads 41°C. The unit
is ready to use.
•Turn off unit. Discontinue
infusion of fluids. Do not
warm fluids before infusing
them through the Ranger unit.
Solution
Power to heating plates will
shut off if temperature rises
to 46˚C. Turn unit off and
unplug it. Discontinue use of
unit. Discard disposable set.
Alarm will continue to sound
if you do not unplug unit.
Call Arizant Healthcare
Customer Service.
Troubleshooting
