Welch Allyn Medical Diagnostic Equipment Thermometer 690 Manual De Usuario

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Remove the probe well from the unit. Unplug the latching probe connector to prevent the 
device from consuming battery power while you are cleaning the probe well.

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Clean the inner surface of the probe well by swabbing the surface with a cloth dampened 
with a mild detergent solution or a 70% isopropyl alcohol, a 10% chlorine bleach solution, 
or a non-staining disinfectant.

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Clean the probe well’s outer surface by swabbing or wiping the surface with one of the 
solutions mentioned above.

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Immerse the probe well in mild detergent solution as necessary for cleaning.

WARNING:  DO NOT use hard or sharp objects to clean the probe well. This could 

damage the probe well and cause the unit to not function properly.

WARNING: DO NOT use steam, heat or gas sterilization on the thermometer or probe. 

DO NOT autoclave the probe well.

•

Thoroughly dry all surfaces before re-assembling the instrument.

•

Re-connect the latching probe connector to the thermometer.  Ensure that the connector 
snaps into place.

•

Re-install the probe well in the thermometer and snap the probe well into place.

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Insert the probe into the well.

1. Remove the box of probe covers from the probe cover storage compartment on the back 

of the unit.

2. Remove the probe and the probe well.

3. Press inward on the textured grips on each side of the assembly to remove the battery 

door from the back of the unit.

4. Remove the three AA 1.5Vdc alkaline batteries and replace all three batteries with AA 1.5 

Vdc alkaline batteries. Match the +/- polarity of each battery to the +/- symbols inside the 
battery compartment. 

WARNING: Use size AA 1.5 Vdc alkaline batteries only. Use of any other battery size or 

type could damage the thermometer and cause personal injury.

5. Snap the probe cover storage assembly back into place.

6. Replace the probe and probe well. 

Note:  Remove the batteries, if the instrument is not used for an extended period of time, to 

avoid possible damage to the thermometer due to battery leakage.