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6
Maintenance
The Maintenance screen gives the options to change the Panel Setup Times and modes. Under the Panel
Setup Times the user can adjust the Startup delay, High Pressure on time, number of blow backs, and the
time between blowbacks. The modes available are the calibration mode, off mode, maintenance mode,
and the startup mode. In maintenance mode the user can choose to turn on or off the High pressure
solenoid, pressure release solenoid, the pump, and choose the probe selection. The mode check alarm
time is adjustable in the maintenance screen as well.
Modes
Start Up Mode
Start up mode is the first mode that the sample panel goes into upon being enabled. Start up mode allows
pressure to be created within the lines and give the flow detector time to stabilize. The sample panel
enters start up mode every time that the pump turns on. If there is a low flow condition or the line is
clogged during start up mode the sample panel goes into an error condition and the PLC energizes the
trouble relay and sends a signal to the DCS signaling that maintenance is required.
Normal Mode
Normal mode occurs immediately after start up mode and is maintained during normal sampling
conditions. Normal mode is defined as: the pump operating correctly, the flow detector is within normal
range and the panel is not in maintenance or blowback mode.