Siemens FIDAMAT 6, Руководство по эксплуатации, Страница: 141 / 202

Service and maintenance
9.8 List of maintenance requests
FIDAMAT 6
Operating Instructions, 01/2019, A5E00222135-04
139
9.8 List of maintenance requests
For FIDAMAT 6, the following messages require a maintenance request (display in the
status line and storage in the logbook) and are signaled externally if you have configured a
corresponding relay under function 71.
With function 87, you can switch off each maintenance request individually, which means
suppressing the display in the status line, storage in the logbook and the external signal.
Table 9- 1 Maintenance requests
No. Message Possible causes Remedy Notes
W1
Q Calibration differ-
ence too great
Calibration gas was
changed
Repeat calibration Calibration tolerance, see
also function 78; drift of
channel according to
technical data:
zero point: 1% of full-scale
value/week,
span: 1% of full-scale
value/week
Drift behavior due to con-
taminated gas lines
Check whether drift is normal;
check gas lines for contamination
and replace if necessary.
W4
Q Set clock (function
58)
The device was switched
off.
New input of date and time Function 58
W5
Q
Combustion air
pressure/
combustion gas
pressure
Combustion air pres-
sure/sample gas pressure
too high or too low;
• Check seal of exhaust gas
restrictor (restrictor 4)
•
Check tubing
• Readjust pressure value with
pressure regulator
The device changes to the
"Warm-up phase" operat-
ing state.
With firmware version 1.2
and higher, the device will
only leave this state when
the maintenance request
has been acknowledged.
Combustion gas primary
pressure too high or too
low.
See above
Limits have been chosen
too close.
See above
Sample gas supply mal-
function:
• Pump defective
•
Pump diaphragms
defective
• Filter clogged
•
Leaky
lines/connections
• External sample gas
line/
sampling probe
clogged
Replace pump
Replace pump diaphragms
Replace filter
Check lines/ connections/ seals
and replace, if necessary
Check gas lines and sampling
probe for contamination and re-
place if necessary.