14 71221-0000 Rev. G
3. Preventive Maintenance
The following preventive maintenance is recommended to maximize uninterrupted service
with the SureTemp
®
Plus Model 690 and 692 Thermometers.
3.1 Six-Month Maintenance
Units that are in service on a regular basis should have the following preventive maintenance
performed every six months:
1. Visually inspect the thermometer for any physical damage that might cause future product
failure.
2. Clean the unit per instructions in the Operator’s Manual supplied with the thermometer
and/or per the instructions below.
3. Perform the Power-On Self Test and Model 9600 or 9600 Plus Calibration Testing
procedure found in the Model 9600 or 9600 Plus Operation Manual.
3.2 Standard Storage
Units which are stored for an extended period should have the following maintenance
performed every 12 months:
1. Remove the batteries before storage.
2. Reinstall the batteries and perform the Power-On Self Test and Model 9600 or 9600 Plus
Calibration Testing procedure found in the Model 9600 or 9600 Plus Operation Manual
before use.
3.3 Cleaning
3.3.1 Cleaning the Thermometer and Probe
• Wipe the thermometer regularly with a cloth dampened with warm water and a mild
detergent solution.
• As needed, clean the thermometer and probe with a 70% isopropyl alcohol solution, a
10% chlorine bleach solution, or a non-staining disinfectant.
WARNING: DO NOT immerse or soak the thermometer or probe in any type of fluid.
WARNING: DO NOT use steam, heat or gas sterilization on the thermometer or probe.
DO NOT autoclave the thermometer or the probe.
3.3.2 Cleaning The Removable Probe Well
• 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.
• 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.
• Clean the probe well’s outer surface by swabbing or wiping the surface with one of the
solutions mentioned above.
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