Hach BioTector B7000i - Page 142

Page 142
17_SMPL VALVE NOT
SYNC
Correct sensor position for Sensor 1
(SEN1) has not been detected in
Sample Valve when Sample Pump is
running.
Change Relay 4 on the Relay
PCB.
Check sensor signal looking at
LED 12 on Signal PCB and DI01
in Digital Input menu.
Check Sample Valve SEN1
position and SEN1 signal using
the Simulate menu.
For further tests, see information
sheets “T018. BioTector Sample
Valve Not Synchronized Fault
Troubleshooting” and “TT002.
BioTector Sample Valve Not Sync
Fault_Quick Troubleshooting”
supplied in the MMC/SD card,
shipped with the BioTector.
Replace the valve assembly.
18_LIQUID LEAK DET
BioTector’s liquid leak detector is
activated by the two liquid leak detector
points fitted in the BioTector, one of
which is in the analysis enclosure and
the other is in the Mixer Reactor. See
figure 1 in Section 4.1.1 Analysis
Enclosure for details.
Check for a liquid leak in the
BioTector analysis enclosure.
Check for a liquid leak in the Mixer
Reactor by unplugging the leak
detector connector on the bottom
of the reactor.
Rectify the leak.
20_NO REAGENTS
(can also be programmed as a
warning or notification condition)
BioTector has calculated that the
reagent containers should be empty.
Change reagents, and reset
reagent monitor in Install New
Reagents menu.
Confirm that the reagent
volume/container size input values
are correct in the Reagents
Monitor menu.
If necessary, to readjust the
number of days reagents last, see
Section 8.2.6 Reagents Monitor
for details.
129_REACTOR PURGE
FAIL
System has detected a possible
blockage or restriction in the reactor,
Sample Out Valve (MV5) or associated
tubing and fittings. See Reactor Purge
Check and Reactor Purge Band
defined in Pressure/Flow Test Program
menu 8.3.4.6 Pressure/Flow Test
Program.
Various, for example,
air and oxygen supply problem.
Check oxygen pressure looking at
the Oxygen Controller Status (O2-
CTRL STATUS) menu. See
Section 8.1.6 Oxygen Controller
Status for details. The pressure is
typically 400mbar (±10mbar) at 20
l/h MFC flow.
Blocked reactor.
Faulty/blocked Sample Out Valve.
Blocked tube after MFC.
Faulty MFC.
Run Flow Test (see Section
8.1.1.2 Flow Test for details).