3 diagnostic tests, 1 distributor diagnostic, Troubleshooting – Hach-Lange Sigma SD900 Portable User Manual

Page 69

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67

Troubleshooting

7.3 Diagnostic tests

Use the diagnostics option to test for correct operation of the
following components:

Distributor (

section 7.3.1

)

Keypad (

section 7.3.2

)

Display (

section 7.3.3

)

Liquid sensor (

section 7.3.4

)

An overview of the available diagnostic tests is shown in

Table 2 on

page 35

.

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

section 3.3.3.5 on page 26

and

section 6.4 on page 62

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

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