12 Maintenance
ASTOTHERM PLUS Instructions for Use
41
Test 5
Temperature control and display
Required
Actions
1. Insert the clinical thermometer
into the rear measuring bore on
the side of the heat exchanger.
2. Plug the mains plug into a socket.
3.
Press the “Standby” button
(
On Mode
).
4. Select a temperature of maximum 41°C (if necessary press
the “Decrease” button
or the „Increase” button
.
5.
Press the “Start” button
for at least one second (
Heating
Mode
).
6. Wait about 5 minutes until the actual temperature is equal to
the setpoint temperature.
7. Start the measurement on the clinical thermometer and
measure the actual temperature of the heat exchanger.
8. Compare the measured temperature with the displayed
temperature and the selected setpoint temperature of the
Warmer.
Result
The test is successful when the limits are met in accordance with
the test protocol (
chapter 12.3 Test protocol
This test is used to check the essential performance.
Absolutely avoid during this measurement influences from the
environment (drafts, heat radiation of other heat sources, etc).
Clinical thermometers are designed as „immersion sensors“. In
order to achieve a sufficiently accurate measurement result,
the thermometer must be immersed deep enough (depending
on manufacturer and type). Because here only the metal tip of
the thermometer is used, usually the measured temperature is
slightly lower than the real temperature.
Fig. 6: Temperature measurement
