WAGNER Titanus Micro-Sens, Technical Manual

Page: 198 / 238

Maintenance
TITANUS
MICRO·SENS
®
198 06/13
If the sensor adjustment is air pressure-independent, oscillations in the air
pressure can lead to undesirable air flow faults. At more than 30 % air flow
change the air flow sensor adjustment must be air pressure-independent
and it must be ensured that no oscillations in air pressure can occur in the
surrounding environment.
WARNING
If it cannot be ensured that no oscillations in air pressure will occur in the
surrounding environment, the air flow sensor must definitely be air pres-
sure-dependent adjusted.
If air flow adjustment was conducted as air pressure-dependent and the ac-
tual value is still no longer within the tolerance range for the air flow thresh-
old selected (air flow fault signalled by the device), then there must be an-
other fault variable apart from any air pressure or temperature oscillation.
1. In this case, test that the pipe system is sealed tight and not blocked
(see Chapter Commissioning).
NOTICE
If during fault location the pipe network was changed, the original pipe sys-
tem configuration must be restored after fault location is completed and the
air flow again adjusted.
2. If this test does not show any defects, check air flow monitoring by con-
necting the test pipe and carrying out the function test described in
Chapter Commissioning. If the function test shows no deviations from
the described procedure, it is certain that there is no defect in air flow
monitoring.
WARNING
If there is a defect in air flow monitoring, only authorised personnel may
change the detection unit!
3. Adjust again with the pipe system connected.
air pressure-dependent
Clearing air flow fault