Servicing
Instruction Manual FireGuard 2
13542E/5
73
WORKSTEP
ADDITIONAL INFO / IMAGES
4.
The checking unit is detected
If the checking unit is detected by the instru-
ment, then the LED starts flashing in one-
second intervals and the adjustment is car-
ried out automatically.
The checking unit is not detected
If the checking unit is not detected by the in-
strument, then the LED continues to flash in
four-second intervals. In this case, check the
points in the following list one after the
other:
▪
Cleanliness of the checking unit.
▪
Correct checking unit used?
▪
Does the nominal value match the value
on the checking unit?
▪
Soiled optics in the instrument.
In this case, check the cleanliness of the
optics as described in Section 9.2 and
then repeat the procedure.
5.
After the adjustment has been made suc-
cessfully, the current soiling level is indicated
by a flash code on the LED:
1. The LED goes out for five seconds.
2. The flash code indicates the current soil-
ing level.
3. A second phase where the LED goes out
for five seconds indicates that the code is
finished.
If the LED flashes more than five times, then
the soiling level is too high. The FireGuard 2
must be cleaned according to the servicing
schedule.
4. Remove the checking unit.
A: Adjustment flashes approxi-
mately 20 times in one-second in-
tervals.
B: Flash code key:
Flashes zero times = clean
Flashes up to ten times = soiling
limit reached
6.
Return the instrument to its initial state.
