9 Maintenance and Calibration
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9
Maintenance and Calibration
9.1.
Storage, Acclimatization
Fast ambient temperature changes may result in condensed water on and inside the instrument.
This may cause serious damage of electronic parts, e.g. the controller or safety devices.
•
Do not store the instrument outdoor, the storage environment must be clean and dry.
•
After long time storage or transport with cold ambient conditions or thermal fluctuation,
the instrument requires to adapt slowly to the local ambient conditions before starting up.
•
If condensed water has formed, wait at least 12 hours before installation and starting up.
•
Avoid mechanical damage and agitation.
•
Storage temperature range: -10°C to +60°C.
9.2.
Operation Environment Requirements
Caution
Read this section carefully before setting up testo CU-2 Digital Control Unit.
Testo SE & Co. KGaA is not liable if the instrument is damaged, caused by the
operation environment not meeting the requirements.
Caution
The testo CU-2 Digital Control Unit is designed to be installed in a laboratory, test
stand or a temporary test set-up. The instrument is not intended to be used
outdoor or in a dusty or wet environment.
IP protection
degree
IP 20. testo CU-2 is protected against accidental contact to
dangerous parts of the instrument. It is not protected against intrusion
of sand, dust or water. Avoid operation in dusty or wet environment
for safe and reliable operation.
operating tempe-
rature range
The operating ambient temperature range is +10°C to +40°C if free air
circulation around the device is ensured.
humidity range
The ambient relative humidity range (RH) is 0% to 90%
shocks and
vibrations
Avoid operation under any kind of shock or vibration.
