Vaisala AWS330 - Manual (Page 197)

Chapter 6 ______________________________________________________________ Maintenance
VAISALA ______________________________________________________________________ 195
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 Backup Batteries
1. Switch off the external AC (mains) or DC inlet and detach the flat
connectors from the batteries.
2. Replace the battery. Refer to section Powering Up System on page
97 for details.
All backup batteries must be replaced at the same time. The replacement
batteries must be from the same production batch.
WARNING Use only batteries of the same type as originally installed on the system.
Changing QML201 Logger
NOTE This should only be done by a trained technician.
1. Take a backup of the station parameters as described in section
Station Parameter Backup and Restore on page 153.
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.
6. Restore the station parameters as described in section Station
Parameter Backup and Restore on page 153.