ATI
Q46UV UV254/Turbidity Monitor
Part 5 - Configuration
36
O&M Manual
Rev-D (11/19)
Timer Cycle
When the Clean Timer is set to ON in the Config menu, this routine
selects the cleaning frequency. Range is 1-999 hours but cleaning
should not be done more than every 8 hours, especially when chemical
cleaning is used.
Timer Hold
This routine sets the amount of time signals will be held after completion
of a cleaning cycle. Range is 1-999 minutes. Use 3 minutes for
Timer Clean or
Chem Pump
If Cln1 was selected, Timer Clean allows programming of the number of
air cleaning pulses delivered during a clean cycle. Range is 1-9 and
default is 3. If Cln2 was selected, Chem Pump controls the run time for
the chemical feed pump. Range is 1-99 seconds and default is 30
seconds.
Chem Clean
For chemical cleaning systems, this routine sets the amount of time that
cleaning chemical is left in the flow chamber. Range is 1-99 minutes and
default is 15 minutes.
5.26 Diagnostics Menu [DIAG]
The diagnostics menu contains all of the user settings that are specific to the system diagnostic
functions, as well as functions that aid in troubleshooting application problems.
Set Hold
The Set Hold function locks the current loop output values on the present
process value and holds relays in current status. This function can be
used prior to calibration, or when removing the sensor from the process,
to hold the output in a known state. Once HOLD is released, the outputs
return to their normal state of following the process input. The transfer
out of HOLD is bumpless on the both analog outputs - that is, the
transfer occurs in a smooth manner rather than as an abrupt change. An
icon on the display indicates the HOLD state, and the HOLD state is
retained even if power is cycled. Press ENTER to initiate user entry
mode, and entire value will flash. Use the UP arrow key to modify the
desired value, selections are
ON
for engaging the HOLD function, and
OFF
to disengage the function. Press ENTER to store the new value.
The Set Hold function can also hold at an output value specified by the
user. To customize the hold value, first turn the HOLD function on.
Press the ESC key to go to the DIAG Menu and scroll to Sim Output
using the UP arrow key. Press ENTER. Follow the instructions under
Sim Output (see following page).
Fault List
The Fault List screen is a read-only screen that allows the user to display
the cause of the highest priority failure. The screen indicates the number
of faults present in the system and a message detailing the highest
priority fault present. Note that some faults can result in multiple
displayed failures due to the high number of internal tests occurring. As
faults are corrected, they are immediately cleared.
