3 diagnostic tests, 1 distributor diagnostic, Troubleshooting – Hach-Lange Sigma SD900 Portable User Manual
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Troubleshooting
7.3 Diagnostic tests
Use the diagnostics option to test for correct operation of the
following components:
•
Distributor (
•
Keypad (
)
•
Display (
)
•
Liquid sensor (
)
An overview of the available diagnostic tests is shown in
.
7.3.1 Distributor diagnostic
Use the distributor diagnostic to check for proper operation of the
distributor. The test moves the distributor arm to all 24 bottle
positions regardless of the number of bottles that are specified in
the program.
Note: The distributor diagnostic is only active when the sample program is
configured for multiple bottles.
Procedure:
1. Select
DIAGNOSTICS
>
DISTRIB DIAG
from the main menu. The
distributor arm will begin moving to all positions.
2. The display will show
ARM MOVING
and then return to the
diagnostics menu when the test is complete.
If the arm is not connected or is not able to move to all
positions, the message “arm faulty” will be shown. Review
to make
sure the distributor and arm are set up properly.
ERASING LOG.
PLEASE WAIT
Confirmation that the event log is being
cleared.
Wait for the log to be erased.
ERROR
WRONG PWD
An incorrect password was entered.
Press
BACK
or
ENTER
and enter the
correct password.
PGM DELAY DISABLED
A program delay was set based on
counts but sample pacing/collection was
set based on time. The program delay is
automatically disabled.
To use a program delay in counts, set
the sample pacing/collection to flow
based.
STARTING
PLEASE WAIT
Confirmation that a program is starting.
Wait for the program to start.
ALARM
LOW BATTERY
The main battery power is low.
Replace the battery with a fully-charged
battery.
ALARM
LOW MEMORY BATTERY
The internal memory battery is low
Contact the service center.
ERROR
INVALID SELECTION
The selection is not compatible with the
program setup. For example, the base
selected in the system setup menu must
be compatible with the number of bottles
in the program setup menu.
Select a value that is compatible with
the values specified in the program
setup menu.
Table 7 SD 900 error and information messages (continued)
Message
Reason
Action