Running 600 Controller Self-Diagnostic Tests - Waters 600E Installation And Maintenance Manual

Table 5-2 Shutdown Messages (Continued)
Message Displayed
High Temp Limit
Pump Flow Limit
Set Point > 0
and No Heater

5.2 Running 600 Controller Self-Diagnostic Tests

Self-Diagnostic Test Overview
The 600 controller automatically performs a series of self-diagnostic tests during each
powerup. The self-diagnostics perform a check on the following:
• The 68000 processor, associated clock and reset circuitry, LEDs and drive circuitry,
and ROM that contains code preceding first entry
• ROM, associated address decoding, bus latch, and drive circuits
94 Error Messages, Diagnostics, and Test Procedures
Meaning
Exceeded value
entered on Pump
Setup screen
Incorrect Pump Head
Vol. value entered on
Pump Configuration
screen
Column heater not
properly connected
Correction
Before suspecting a column heater,
ensure the set point and high-limit
values are sufficiently separated to
allow minimal temperature fluctuation
around the set point without triggering
a shutdown. If not, modify the values
in the Pump Setup screen.
Verify that a 100 µ L or 225 µL Pump
Head Vol. value is entered on the
Pump Configuration screen. If the
pump head volume value is incorrect
for the 600E pump, a mismatch in flow
rate occurs, resulting in a shutdown.
If the Pump Head Vol. value is correct,
there is probably an internal failure
(such as in pump drive circuits and
pump mechanics). Contact Waters
Technical Service.
When you enter temperature values on
the Pump Setup screen, the column
heater must be connected or a shut-
down occurs. This feature reminds you
not to start a method specifying
column heating without installing the
heater.