Fluke Biomedical VT Plus HF - Manual (Page 121)

Maintenance, Service, and Calibration
Maintenance
5
5-3
Maintenance
The Analyzer requires little maintenance or special care; however, it is a calibrated
measuring instrument and should be treated as such. The optional carry case is
recommended for storage. It is further recommended that the storage environment be free
from vibration.
Avoiding Damage
Do not drop the instrument or subject it to any mechanical abuse that could cause a shift
in the calibrated settings.
W Caution
To avoid
damage to the Analyzer or adverse affects on its
performance, d o not expose the system to temperature
extremes. Ambient temperatures should remain between 10 °C
and 40 °C.
Cleaning
Clean the exterior of the Analyzer occasionally with a cloth dampened with a mild
detergent solution. A solution of 70 % isopropyl alcohol may be used to remove stains
and clean the system. No other solvents are recommended.
W Caution
To avoid damage to the Analyzer or adverse affects on its
performance, do not spray liquid directly on or immerse the
unit.
Oxygen Sensor Replacement
The Analyzer uses a galvanic oxygen sensor that is under warranty for 12 months. The
oxygen sensor cell must be replaced when the oxygen calibration cannot be successfully
completed. The oxygen sensor may operate for longer than 12 months depending on use.
To replace the oxygen sensor:
1. Disconnect the power cord before opening the oxygen sensor door.
2. Remove the three screws in the oxygen sensor door on the back of the Analyzer. The
oxygen sensor is a round plastic cylinder about one inch in diameter with wires
protruding from the back of the sensor.
3. Disconnect the in-line electrical connector on the sensor wire.
4. Un-screw the old sensor and remove it.
5. Screw in the new sensor (Fluke part #2138514).
6. Re-connect the sensor wire.
7. Replace the oxygen sensor door.
8. Re-calibrate the oxygen sensor following the instructions under Connection and
Setup: Utilities: Oxygen Sensor Calibration.