Chapter 6 ______________________________________________________________Maintenance
VAISALA______________________________________________________________________ 193
Replacing Components
In some overvoltage conditions, such as the case of a lightning strike,
some protective components might get damaged and need replacement.
To replace other components than the ones described here or in the
previous sections, contact Vaisala.
Changing Battery
1. Turn the power off from the main switch.
2. Unplug the battery wires.
3. Unscrew the screw holding the battery clamp around the battery.
4. Slide the clamp to the left.
5. Remove the battery.
6. Install a new battery in reverse order.
Changing the QML201 Logger
NOTE
This should only be done by a trained technician.
1. Turn the power off from the main switch.
2. Unplug the logger connectors. You might need to cut the cable ties
holding the wires to have more slack in the wiring. Do this from the
bottom side of the installation plate to avoid damaging the wiring.
3. Unplug the pressure tubing from the nozzle in the lower right
corner of the logger.
4. Remove the logger from the DIN-rail in the installation plate by
lifting from the left side of the logger bottom.
5. Install a new logger on the installation plate and connect the tubing
and cabling in reverse order. Replace the cut cable ties with new
ones.
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