4.5 - GREEN MACHINE
™
- North America - Installation, Operation, Maintenance, & Troubleshooting Manual
Chapter 11: Operator Training Guide
Page 206
11.3.3
Vacuum Pump Alarm
•
The VST controller will indicate an alarm for the following items:
•
Main voltage is too low
•
Output short circuit
•
Motor overload
•
Motor temperature is too high
•
The Vacuum Pump is not working properly
•
The GREEN MACHINE will not to operate during this alarm
11.3.4
Maintenance Switch Alarm
•
When the Maintenance Switch is engaged the GREEN MACHINE will not operate and a
Maintenance Switch Alarm will show as active.
•
To remove the Maintenance Switch Alarm, turn the Maintenance Switch ON to disengage the
Maintenance Switch.
•
The GREEN MACHINE will not to operate during this alarm.
11.3.5
Overfill Alarm
•
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.
•
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 clear.
•
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.
