Ohmeda Ohio 2000 IWS Series, Operation And Maintenance Manual

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6600-0255-000 12/20/00
3/Operation
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Probe Failure Alarm: (all models except the 2001 international)
The probe failure alarm is only active in the servo mode of operation. The alarm
activates when the skin temperature probe fails electrically due to an open or short
circuit, or is disconnected from the Warmer. The heater deactivates and the patient
temperature display flashes “HH.H” or “LL.L” when this alarm condition exists.
Patient Temperature Alarm: (all models except the 2001 international)
The patient temperature alarm is only active in the servo mode of operation. The alarm
activates when the difference between the patient temperature and the control tem-
perature is greater than 1°C. When the patient temperature returns to within 0.8°C of
the control temperature, this alarm is automatically reset.
Note: If the patient temperature probe reads below 30°C or above 42°C in servo mode,
the heater is deactivated and “LL.L” or “HH.H” respectively, appears in the patient
temperature display.
Note: Qualified service personnel can adjust the alarm to trigger at a difference of
0.5°C and reset at a difference of 0.3°C.
WARNING:
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In the servo mode, verify that the patient temperature probe is securely
attached to the patient at least once every half hour. A dislodged probe
may not trigger an alarm. If the probe becomes dislodged, the warmer
can over or under heat the infant.
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The skin temperature probe should be located on the patient’s skin in an
area which is directly in the path of the radiant heat. It should not be
attached to an area which is shielded from the radiant heat or between
the patient and the mattress. Large temperature gradients and very long
servo response times will result from improper probe placement.
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Rectal temperatures must never be used to servo control a patient’s
temperature.
System Failure Alarm:
The system failure alarm activates if the solid state relay controlling the radiant heater
fails, if the microprocessor fails or if the calibration drifts by more than 0.3°C. The
alternating two tone alarm cannot be silenced with the alarm silence switch.
WARNING:
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Do not use the Warmer system if the system failure alarm is activated.
Remove the unit from service and refer to qualified personnel for repair.
Heat Off Alarm:
When the heater is rotated to the side position, the heater is switched off and the Heat
Off indicator is switched on. The audible Heat Off alarm activates after 5 minutes if the
heater is not returned to the normal position. The alarm can be silenced by pressing the
Alarm Silence switch.