If the thermometer shows «RET» (without the battery symbol) on its
display, the anti-theft time has elapsed and the thermometer must be
returned to the station for unlocking.
If the anti-theft function is not enabled, the display will show «off» when
in stand-by mode.
Care and cleaning
Braun ThermoScan probe covers are intended for single use only!
To ensure accurate measurements, always use Braun ThermoScan
disposable probe covers with the Pro 4000 thermometer. Damaged,
perforated, or soiled probe covers can lead to inaccurate temperature
measurements. Additionally, the accuracy of your temperature meas-
urement can be affected by damage to the probe window, or the pres-
ence of dirt or cerumen on the probe window.
Probe Window
To assure a high level of accuracy, it is very important to keep this
window clean, dry and undamaged. Fingerprints, cerumen, dust and
other soiling compounds reduce transparency of the window and
result in lower temperature measurements. If the thermometer is
accidentally placed in the ear without a probe cover installed, the
window must be cleaned immediately. Additionally, the window and/or
probe tip area should never be modified, changed, or adjusted. These
changes will affect calibration and accuracy of the thermometer.
To clean the window, gently wipe its surface with a cotton swab slightly
moistened with alcohol and immediately wipe dry with a clean cotton
swab. After cleaning, allow at least 5 minutes drying time before taking
temperatures. Make sure probe window is clean and dry. Avoid
touching the window except when cleaning is required. If the window
is damaged, the thermometer must be returned to Welch Allyn for
service.
Note: Do not use any chemical other than alcohol to clean the probe
window.
Thermometer
Use a soft cloth slightly moistened with alcohol to clean the thermo-
meter display and exterior. Do not use abrasive cleaners. Never sub-
merge the thermometer in water or any other liquid. Store thermometer
and probe covers in a dry location (the thermometer is not protected
against ingress of water), free from dust and contamination and away
from direct sunlight. The ambient temperature at the storage location
should remain fairly constant and within the range of 50 °F to 104 °F
(10 °C to 40 °C).
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