Chapter 6 ______________________________________________________________ Maintenance
VAISALA _______________________________________________________________________ 79
CHAPTER 6
MAINTENANCE
This chapter provides information that is needed in the basic
maintenance of the product.
Periodic Maintenance
Periodic maintenance is normally limited to window cleaning. In
addition, warnings and alarms should be checked regularly with the
maintenance terminal or another terminal or PC with a serial
connection (see section CL31 Status Message on page 52). Proper
function of the window blower, the only mechanically moving part,
automatically checked once an hour. Malfunction is reported in the
data and status messages.
Alarms and Warnings
The data message has to be checked for alarms and warnings at
regular intervals. The second character of line two contains warning
and alarm information indicating the present status of the device as
follows:
0
Self-check OK
W
At least one warning active, no alarms
A
At least one alarm active
In case there is an active alarm or warning, more information is given
at the end of the second line as a binary code indicating the cause. The
status message gives detailed information about the failure. See
section Data Message on page 44.
