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5.1.4 Maintenance
The CTU contains no serviceable parts. Other than periodic cleaning of the exterior surfaces, none is
required. To clean the CTU, spray a mild detergent solution onto a towel and wipe down the unit. Do
not submerge the unit in water.
If heater becomes inoperative, return the CTU to Medivance for service. An open fuse is indicative of
a problem that requires immediate service.
5.1.5 Calibration
The CTU should be returned to the manufacturer for calibration every two years. The date of last
calibration is indicated by the international symbol for calibration, an upside down solid black triangle,
which can be found on the top of the CTU.
CTU Calibration Data
Figure 5.1
Calibration Date
Calibration Data
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