Pump Solutions Group Neptune GLYCOL FEED SYSTEM G-100-1A, G-100-2A - Manual (Page 3)

II. OPERATION
The glycol feeder is provided with a control panel with HAND/OFF/AUTO selector
switch.
When the panel is switched to the AUTO position, the pump is actuated via the pressure
switch, which is mounted in the discharge assembly and sensing the pressure in the loop.
The pressure switch is pre-set to start the pump at 12 psi and stop the pump when 30 psi in
the loop is achieved. The adjustment range for the standard pressure switch is 10-45 psi to
start the pump and 20-60 psi to stop the pump. The minimum differential pressure
between the cut in and cut out set points is 10 psi and the maximum is 30 psi. The float
switch in the bottom of the tank will stop the pump if the glycol solution in the tank gets to
low level.
The MANUAL position of the selector switch in the panel will allow the pumps to run and
inactivate both the pressure switch and the level switch.
PLEASE READ THIS
The initial setting of the pressure switch is critical
to the proper operation of the glycol feeder.
WARNING
The pressure relief valve is factory set at 60 psi.
DO NOT operate the glycol feeder above 100 psi.
If your application requires a higher operating
pressure, consult the factory.