4.5 - GREEN MACHINE
™
- North America - Installation, Operation, Maintenance, & Troubleshooting Manual
Chapter 8: Troubleshooting
Page 147
8.8
Overfill Alarm
•
A VST Control Panel Controller Overfill Alarm is Active when the Fuel
Management System Overfill Alarm is Active.
See Figure 8-17
.
•
An overfill condition exists when, during a fuel drop, the gasoline level
in the UST exceeds the overfill alarm setting, which is 90% capacity of
the UST.
See Figure 8-18.
•
The VST Control Panel is connected to the Tank Overfill Alarm
output relay.
•
When an overfill occurs, the output (N.O.) relay closes and
GREEN MACHINE will turn OFF.
•
The Overfill Alarm box will display RED indicating an Overfill
Alarm is active.
•
When the gasoline level drops below the overfill alarm level, the
output relay opens and the alarm clears. The GREEN MACHINE
will remain OFF for 2 additional hours.
•
After the 2-hours elapse:
•
The Overfill Alarm box will not be shown on the Fault
and Alarm Screen.
•
The GREEN MACHINE will turn ON if the UST pressure is
above 0.2 IWC.
•
The GREEN MACHINE will remain OFF if the UST
pressure is below 0.2 IWC.
Figure 8-17: GREEN MACHINE Controller Alarm Screen
