Troubleshooting - 3M Ranger 245 Service Manual

English Ranger Blood and Fluid Warming Systems

Troubleshooting

CONDITION
Nothing illuminates on the
warming unit panel�
CONDITION
Alarm indicator illuminates and
alarm sounds, alphanumeric
display alternately flashes a
temperature of 43˚C for the Model
245 (48°C for the Model 247) or
higher and the word "HI�"
CONDITION
Alarm sounds, alphanumeric
display and alarm indicator light
go dark�
18
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�
• Check fuses�
• Call Arizant Healthcare Inc�
Technical Service�
SOLUTION
• Open flow to reduce temperature�
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 44°C for
the Model 245 (50°C for the Model
247)� 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 Inc�
Technical Service�
Arizant Healthcare Inc.