33
Operational State
Description
Low Inlet Pressure
Shutdown
A low inlet pressure shutdown occurs when the inlet pressure is below 8 PSI for more than 5
continuous seconds or below 1 PSI for 1 second.
This is an automatic operation which will remain in effect until the inlet pressure is above 30 PSI.
Low Pump-Inlet Pressure
Stage 1 - 4
The low pump inlet pressure states occur when the pump inlet pressure drops below the required level
for proper operation. There are four (4) stages which limit the pump motor speed to various levels
depending on the input pressure. These states allow the unit to continue operating at lower input
pressures.
This is an automatic operation which will remain in effect until the pump inlet pressure is above 30 PSI.
Maintaining 50
– 65 psi
Maintaining pressure is the normal operating state of the system. In this state, the system is
maintaining a specific outlet pressure. This pressure is based on the outlet flow rate. For lower outlet
flow rates, the maintained pressure is higher.
This is an automatic operation and indicates the system is running normally.
Maintaining 2
– 6 gpm
Maintaining flow is a custom operational setting for the system. In this state, the system is
maintaining a specific output flow. This is typically used for multi-unit systems only.
Once the setting is made, this is an automatic operation.
Manual Mode
Manual mode allows the system to be operated manually.
This is a manual operation and should only be performed by a qualified technician.
Motor Fault Shutdown
A motor fault shutdown occurs when the system has experienced a critical fault related to the
operation of the pump motor.
This is an automatic operation which may require a system restart or evaluation by a qualified
technician.
8900-06
Operational States (continued)