User manual

PAT700 Total Organic Carbon Analyzer – Alarms Page 115
Anatel Operator Manual
Chapter 7 Alarms
7.1 Alarm indication
The analyzer has two basic operational modes: on-line and bottle. On-line TOC and
conductivity are the two primary on-line modes (although you can also select standby, off-line,
manual, or self clean). In on-line TOC and conductivity modes, the home screen provides an
on-screen animation indicating the general state of water flow through the analyzer. In on-line
TOC, conductivity, or manual TOC modes, the animation area also serves as an alarm
condition indicator. If an alarm occurs in an on-line mode, the following sequence of events
occurs:
• When a TOC or conductivity alarm condition occurs, the home screen animation area
flashes red, the displayed value of the variable causing the alarm also turns red, the
PAT700 makes a sound (if a sound is programmed), the alarm icon is enabled, and the
alarm condition is written to the data log and audit trail. See Figure 7-1.
Figure 7-1 Online TOC mode, current tab, in alarm condition
• The animation area continues to flash red until a user acknowledges the alarm. See
Alarm acknowledgement, page 116.
• If the alarm has been acknowledged and the user returns to the home screen, the
animation area remains solid red until the analyzer completes a full cycle without any
errors.
• Once a full cycle has occurred without any errors, the normal animation reappears.
• If on the next cycle the same or a new error occurs, the animation area again flashes
red and must be acknowledged.
• As long as alarms exist in the alarm log, the alarm log is accessible.