Ranger
Blood/Fluid Warming System
10
Condition
•Unit alarms soon after plug-
ging it in (unit does not have
to be turned on for this con-
dition to occur).
•Heater temperature rises to
46˚C and unit shuts down
soon after plugging it in (unit
does not have to be turned on
for this condition to occur).
Condition
Alarm sounds but unit has
been turned off.
Condition
Cannot remove warming
cassette from unit.
Condition
Alarm indicator light illumi-
nates and alarm sounds,
alphanumeric display alter-
nately flashes a temperature
of 33˚C or lower and the
word “LO.”
Condition
Alphanumeric display reads
"Er 4" or “Open.”
Condition
Alphanumeric display reads
"Er 5" or “Open.”
Cause
Test screw on bottom of unit
is loose or missing.
Cause
Independent backup safety
system has been activated.
Cause
•Warming cassette is too full,
fluids are still being infused,
or clamp is open proximal to
the warming cassette.
•Warming unit is below
patient level, creating
excessive back pressure.
Cause
Under-temperature condition,
or defective heater/relay.
Cause
Open wire on temperature sensor.
Cause
Electrical interference.
Solution
Make sure test screw is com-
pletely tightened. If it is missing,
turn unit off and unplug it.
Call Arizant Healthcare
Customer Service.
Solution
Unplug unit. Call Arizant
Healthcare Customer Service.
Solution
•Make sure fluid is drained
from warming cassette before
sliding out the cassette, that
fluids are no longer infusing, and
that clamp is closed proximal
to the warming cassette.
•Raise unit above patient level.
Solution
Alarm should stop when
temperature rises above 33°C.
If alarm continues, unplug unit
and discontinue use. Call Arizant
Healthcare Customer Service.
Solution
Do not use unit. Call Arizant
Healthcare Customer Service.
Solution
Remove the unit. Refer to
biomedical technician or
call Arizant Healthcare
Customer Service.
