A541-11-880 Issue A
Page 42
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Appendix A1
A1.1.2
Pump start / stop and control
To Start or Stop the pump the PDT must be in control, indicated by the
Local Control
LED being illuminated.
To take or release control briefly press
Control
.
If something else is in control, error message ‘Control locked’ appears, refer to ‘Control Holder’ in the
Status
menu.
Press
Start
button PDT displays:
Press Stop
button PDT displays:
A1.1.3
Warning / alarm display and acknowledgement
Each new warning / alarm is displayed when it occurs, overwriting any text already present unless another
unacknowledged warning / alarm is currently being displayed. The corresponding
Warning / Alarm
LED flashes to
indicate a new warning / alarm.
Pressing
ENTER
acknowledges the warning / alarm currently displayed and the
Warning / Alarm
LED stops flashing.
If available the display will show the suggested action, press
ENTER
again to clear.
If there is another new warning or alarm the
Warning / Alarm
LED will continue to flash and this is then displayed,
otherwise the display will revert to the original text from before the alarm(s) / warning(s) occurred.
If there are warnings / alarms still present, but they are all acknowledged, then the corresponding LED remains
continuously illuminated. The text indicating acknowledged warning / alarm conditions still present may be viewed
in the
Status
menu, see below. Some Alarms such as 1.01 STOP ACTIVATED remain present until the pump is manually
started from the PDT or front panel controls.
Once all warning/alarm conditions have gone away, then the corresponding LED is extinguished.
To avoid a build up of out of date Warnings they are automatically acknowledged after 36 hours.
Table A1 - Pump start / stop and control
Pump State
Local Control LED
PDT display
Operator
Pump response
Stopped
On
START MENU Start
Pump
Press
ENTER
to
confirm
Pump Starts
Running
On
Pump Running Press
CANCEL
Press
CANCEL
No change (running)
Stopped or Running
Off
No PDT Control Press
CANCEL
Press
CANCEL
No change
Table A2 - Pump start / stop and control
Pump State
Local Control LED
PDT display
Operator
Pump response
Stopped
On
PUMP Stopped Press
CANCEL
Press
CANCEL
No change (stopped)
Running
On
STOP MENU Fast
Shutdown
If Auto Shutdown is
required press down
arrow. Press
ENTER
to confirm
Pump Stops
Stopped or Running
Off
No PDT Control Press
CANCEL
Press
CANCEL
No change