If the remote switch is not activated within the allotted ramp-up time the
switch will shut down the pump and display an error message.
In manual operation the learning phase of the start-up process is instigated
by the operator activating the remote switch once it is established the
system is running as expected, and at a pressure which is appropriate for the
particular outlet/hydrant setup.
The IPG20 provides the user with a non-isolated nominal 24VAC supply
from its LV (Low Voltage) active terminal whenever it is operated from the
mains or from a 24VAC supply.
The 24VAC supply can be connected through a remote switch and the return
wire can be connected to the “R” (remote input) terminal on the IPG20’s
terminal block.
When operated from a 24VAC / DC supply, the 24V active or the supply
positive can be used as the source of low voltage to the remote switch
and the return wire can be connected to the “R” terminal. It is critical that
the remote switch has voltage free contacts. Under no circumstances
apply an external voltage directly to the “R” terminal of the IPG20 pump
guard.
A remote momentary on switch can be used to actuate the IPG20 controller.
In automatic operation after a predetermined ramp-up time to allow the
system to achieve a stable pressure the switch will go into its “learning”
mode without input from the operator, and if the pressure is stable will
lock in the set point pressure for that particular outlet/hydrant setup. This
mode allows for the controller to be remotely started, perhaps by an auto
dialer, level switch or other device.
This is necessary if manual operation is selected in the program.
I
t is important that there are no leaks or other problems at this stage as
they could be locked in by the switch as being normal.
MANUAL OPERATION
AUTOMATIC OPERATION
30
