Hach BioTector B3500C User Manual Download Page 27

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2.2.5 Reaction Archive Screen

The  Reaction  Archive  holds  information  on  TIC,  TOC,  TC,  VOC,  COD,  BOD,  stream  valve,  reaction  range,
start  time  and  related  analysis  information  for  the  last  9999  reactions.  If  the  archive  is  full,  then  every  new
reaction  overwrites  the  oldest  one  in  the  archive.  As  the  Reaction  Archive  contains  9999  events,  the  user
must first enter the  date at which  the  viewing of the  archive starts. The Enter Date menu allows the  user to
specify the date of the first displayed reaction from the archive.

Each reaction record in the reaction archive contains:

Start Time

- reaction start time, which is displayed without seconds in this menu

Date

- reaction date

Reaction Type - with the prefixes below:

S1 to S3:

Reactions from stream 1 to stream 3.

M1 to M3:

Reactions from manual sample stream 1 to manual stream 3.

√

Sample Sensor detected the sample and the liquid quality is greater than the

threshold value for stream and manual samples.

Sample Sensor detected no sample or the liquid quality is less than the
threshold value for stream and manual samples. See Sample Status in
section

8.3.8

Fault Setup

for details.

RS:

Remote standby reaction.

ZC:

Zero calibration reaction.

ZK:

Zero check reaction.

ZM:

Manually input zero adjust.

SC:

Span calibration reaction.

SK:

Span check reaction.

SM:

Manually input span adjust.

A1 to A3:

24 hours average result from stream 1 to stream 3.

The user can navigate through the displayed reactions individually by pressing the UP and DOWN keys each
time, or can navigate in steps of 10 reactions using the LEFT and RIGHT keys. Depending on system
analysis type (e.g. VOC, TC

–TIC etc.) and system display options (e.g. COD and/or BOD) settings, BioTector

displays additional reaction data held on additional Reaction Archive screens. To access the screens, press
the ENTER key, and to return to the previous screen, press the ESCAPE key.

2.2.6 Fault Archive Menu

In the Fault Archive menu, the user can view the last 99 faults/warning/notification events logged in the
system, confirm if these events are current or not, and acknowledge the current events. If the archive is full,
then every new event overwrites the oldest one in the archive. The user can navigate through the displayed
reactions individually by pressing the UP and DOWN keys each time, or can navigate in steps of 10 reactions
using the LEFT and RIGHT keys. See

Section 9

Troubleshooting of System Fault, Warning and

Notification Events

for a list of all systems fault, warning and notification events.

The faults archive events are divided into three categories:

Fault:

Faults are categorized as events, which stop BioTector operation. The 4-20mA signals are set

to the fault level, and the fault relay is activated. The BioTector cannot be started unless the fault in
the archive has been acknowledged.

Warning:

Warning is a minor event, which does not require the BioTector to stop. The 4-20mA

signals are not changed, only the fault relay is activated.

Notification:

A notification is an

information (e.g. “86_Power Up”, “87_Service Time Reset” etc.)

displayed on the screen.

To acknowledge any current events marked wit

h an “*” in the archive, first identify and locate the

faults/warnings/notification. Follow the necessary troubleshooting procedures to solve the problem. See

Section 9

Troubleshooting of System Fault, Warning and Notification Events

for details.

Acknowledge the fault by pressing the ENTER key in the Fault Archive menu. Please note that there are
system faults (e.g. 05_Pressure Test Fail), which cannot be acknowledged by the user. Such faults are reset
and acknowledged automatically by the system when system is started, when system is rebooted or when the
fault condition is solved.

If an event cannot be acknowledged when the system is running, a “SYSTEM

RUNNING” message is displayed on screen.