Hach BioTector B7000 User Manual

Page 141
9.2 BioTector Warning Conditions
The following warning conditions do not activate the BioTector stop sequence and leave the 4-20mA signals
un-changed and do not activate the fault relay.
WARNING
CONDITION
CAUSE/REMEDY
21_CO2 ANL LENS DIRTY
CO
2
Analyzer detected dirt on its
optical system.
Clean the CO
2
Analyzer. Clean
the lenses on the CO
2
Analyzer.
22_FLOW WARNING – EX
MFC oxygen flow through the Exhaust
“EX” Valve (MV1) has dropped below
the “FLOW WARNING” level defined in
Sequence Program, Pressure/Flow
Test Program menu during the
Pressure/Flow Test cycle.
Various, for example,
Low O
2
pressure, O
2
supply
problem. Partially blocked Ozone
Destructor.
Partially blocked tube after MFC.
Faulty/blocked Exhaust Valve
(MV1). Faulty MFC.
23_FLOW WARNING – SO
MFC oxygen flow through the Sample
Out “SO” Valve (MV5) has dropped
below the “FLOW WARNING” level
defined in Sequence Program,
Pressure/Flow Test Program menu
during the Pressure/Flow Test cycle.
Various, for example,
Low O
2
pressure, O
2
supply
problem. Faulty/blocked Sample
Out Valve. Partially blocked tube
after MFC. Faulty MFC.
24_TIC FLOW WARN – EX
MFC oxygen flow through the Exhaust
“EX” Valve (MV1) has dropped below
the “FLOW WARNING” level defined in
Sequence Program, Pressure/Flow
Test Program menu during the TIC
reactor Pressure/Flow Test cycle in TC
- TIC systems.
Various, for example,
Low O
2
pressure, O
2
supply
problem. Partially blocked Ozone
Destructor.
Partially blocked tube after MFC.
Faulty/blocked Exhaust Valve
(MV1). Faulty MFC.
25_TIC FLOW WARN – SO
MFC oxygen flow through the TIC
Sample Out “SO” Valve (MV16) has
dropped below the “FLOW WARNING”
level defined in Sequence Program,
Pressure/Flow Test Program menu
during the TIC reactor Pressure/Flow
Test cycle in TC - TIC systems.
Various, for example,
Low O
2
pressure, O
2
supply
problem. Faulty/blocked TIC
Sample Out Valve. Partially
blocked tube after MFC.
Faulty MFC.
26_PRESSURE TEST
WARN
MFC flow did not drop below the
“PRESSURE TEST WARNING” level
defined in Sequence Program,
Pressure/Flow Test Program menu
during the Pressure/Flow Test cycle.
Small gas/liquid leak in the
BioTector. Valve leaking or not
sealing. Check Sample Out Valve,
Sample ARS Valve and system
fittings. Check Circulation Pump.
27_TIC PRESSURE WARN
MFC flow did not drop below the
“PRESSURE TEST WARNING” level
defined in Sequence Program,
Pressure/Flow Test Program menu
during the TIC reactor Pressure/Flow
Test cycle in TC - TIC systems.
Small gas/liquid leak in BioTector
TIC reactor or lines. Valve leaking
or not sealing. Check TIC Sample
In/Out Valves and fittings.

Hach BioTector B7000 Specifications

General

Brand	Hach
Model	BioTector B7000
Category	Measuring Instruments
Language	English