
OPERATION
BLANKETROL III, Model 233
OPERATION AND TECHNICAL MANUAL
Page 25 of 131
cycles between heating and cooling the water in order to maintain the Set Point temperature. The
unit is designed not to exceed or fall below the desired temperature.
As a safety precaution, the BLANKETROL III System has three high temperature safety devices
and two low temperature safety devices.
Each safety device continuously monitors the temperature of the water in the BLANKETROL III
equipment. As an additional precaution, if the water temperature sensor itself should fail, the unit
shuts down and indicates SENSOR FAULT REMOVE FROM SERVICE. With this safety design,
both the patient and the unit are protected from injury or damage caused by extreme temperatures.
The operator must regularly monitor the patient (according to hospital/institution
policy/protocol) whenever hyper-hypothermia therapy is used.
SAFETY CONTROLS FOR PROTECTION FROM HIGH TEMPERATURE
The microprocessor controls the temperature when the water in the BLANKETROL III equipment
reaches 42.0°C
0.5°C (107.6°F
1.0°F).
If water in the BLANKETROL III equipment reaches 44.0°C
2.0°C (111.2°F
3.6°F), the safety
device shuts off the unit, the Status Display flashes HIGH LIMIT REMOVE FROM SERVICE and
the trouble alarm sounds.
If software fails and water in the BLANKETROL III equipment reaches 44.0°C
2.0°C (111.2°F
3.6°F), the back-up safety device shuts off the unit, Status Display flashes HIGH LIMIT REMOVE
FROM SERVICE, and the trouble alarm sounds.
If the reservoir water temperature reaches 46.0°C
2.0°C (114.8
3.6°F), the thermostatic snap
disc shuts down the unit, Status Display flashes SNAP DISC REMOVE FROM SERVICE, the
patient display indicates EE02, and the trouble alarm sounds.
SAFETY CONTROLS FOR PROTECTION FROM LOW TEMPERATURE
The microprocessor controls the temperature when the water in the BLANKETROL III equipment
reaches 4.0°C
0.5°C (39.2°F
1.0°F).
If the water in the BLANKETROL III equipment reaches 2.0°C
2.0°C, (35.6°F
3.6°F), the safety
device shuts off the unit, the Status Display indicates LOW LIMIT REMOVE FROM SERVICE, and
the trouble alarm sounds.
If software fails and water in the BLANKETROL III equipment reaches 2.0°C
2.0°C, (35.6°F
3.6°F), the back-up safety device shuts off the unit, the Status Display indicates LOW LIMIT
REMOVE FROM SERVICE, and the trouble alarm sounds.