Pressure/Flow Test Program - Hach BioTector B7000 User Manual

Pressure/Flow Test Program

TIME
PRESSURE TEST FAULT
PRESSURE TEST WARN
08:15  BioTector performs an automatic pressure and flow test every
day at the TIME programmed (at 08:15 hours by default).
6.0l/h  Each time BioTector is started up and everyday during online
operation at the programmed TIME above, BioTector
pressurizes the system with oxygen gas and uses its mass flow
controller to detect any gas leak in the system. If the measured
flow is less than or equal to the programmed PRESSURE TEST
FAULT flow level (6.0 l/h by default), the pressure test passes.
 If the flow is greater than programmed PRESSURE TEST
FAULT setting, the pressure test fails, and BioTector generates
a "05_PRESSURE TEST FAIL" fault and stops. This fault is
logged in the fault archive. In TC – TIC systems, BioTector
generates a "07_TIC PRESSURE FAIL" if TIC reactor pressure
test fails.
 The pressure test cycle can be disabled by setting PRESSURE
TEST FAULT setting to 0.0 l/h. When disabled, BioTector
automatically displays an "OFF" message on the screen and
logs a "29_PRESSURE TEST OFF" warning in the fault archive.
 If the pressure test is skipped during the startup sequence with
the "Quick Startup" function (see Operation, Start Stop section) a
"28_NO PRESSURE TEST" warning is logged in the fault
archive. This warning cannot be acknowledged by the user, it
can only be acknowledged automatically by the system the next
time the pressure test is passed.
4.0l/h  PRESSURE TEST WARNING, which is typically 30% less than
the PRESSURE TEST FAULT setting (4.0 l/h by default), gives
an advanced warning of a possible gas leak in BioTector.
 The pressure warning can be disabled by setting PRESSURE
TEST WARNING to 0.0 l/h. When disabled, BioTector
automatically displays an "OFF" message on the screen.
 If the flow measured during Pressure Test is less than or equal
to 6.0 l/h but greater than 4.0 l/h, BioTector generates a
"26_PRESSURE TEST WARN" and continues to run. The
warning is logged in the fault archive. In TC – TIC systems,
BioTector generates a "27_TIC PRESSURE WARN" if TIC
reactor pressure test fails.
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