3M
TM
Ranger
TM
Irrigation Fluid Warming System
English
11
202456B English
Check the 3M
TM
Ranger
TM
system website to ensure you have the most recent version of this document.
www.rangerfluidwarming.com reorder #202456B
Condition
Cause
Solution
Alpha-numeric display
reads “Er 5” or “Open.”
Electrical interference.
Remove the unit. Refer to biomedical
technician or call 3M Patient
Warming technical support.
Condition
Cause
Solution
Alpha-numeric display
reads “Er 4” or “Open.”
Open wire on temperature sensor.
Do not use unit. Call 3M Patient
Warming technical support.
Condition
Cause
Solution
Alerts indicator light illuminates and
alert sounds, alpha-numeric display
alternately flashes a temperature of
33°C or below and the word “LO.”
Under temperature condition caused
by very high flow using very cold
fluid, or defective heater/relay.
Alerts should stop when temperature
rises above 33°C. If alerts continue,
turn off unit, unplug unit, and
discontinue use. Call 3M Patient
Warming technical support.
Condition
Cause
Solution
Cannot remove cassette from unit.
• Cassette is too full, fluids
are still being infused, or
clamp is open proximal to
the warming cassette.
• 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.
• Warming unit is below
patient level, creating
excessive back pressure.
• Raise unit above patient level.
Condition
Cause
Solution
Alert sounds but warming
unit has been turned off.
Independent backup safety
system has been activated.
Unplug unit. Call 3M Patient
Warming technical support.
