14
DOC No: 8540 REV E
15
DOC No: 8540 REV E
Flow rate should always be adjusted by controlling motor speed where
possible. Ensure that overpressure does not occur in the discharge pipe.
NEVER throttle
fl
ow by an inlet valve.
Starting or running the pump with the discharge valve closed may result
in overpressure in the discharge pipe.
Post Start-up Checks
Once the pump has started, carry out the following checks:
1. Check that the pump and motor operate smoothly and are free from vibration.
2. Check the inlet and discharge
fi
ttings are free from leaks.
Operation
Start-up Procedure
Before starting the pump ensure that any valves in the inlet or discharge lines are open
and that any inlet
fi
lters are clean and free from obstruction.
1. Set the external control signal input to minimum value (0 VDC.)
2. Set the power supply (12 VDC to 36 VDC) to ON. With the control input set to 0V or <
3% PVM VDC the pump will show a nominal 25mA to 100mA current draw and will not
turn.
3. Adjust the control signal input to the required level. Current demand will rise and fall as
the pump load and speed varies.
Once started the pump should prime if it has not already been
fi
lled with
fl
uid. If the pump
fails to prime, stop the pump and
fi
ll the pump head with liquid.
Shut-down Procedure
Switch off the EagleDrive by
fi
rst setting the external control signal input to the minimum
value, then switch off the power supply. Check that the unit runs down in a steady
manner. Close the inlet and discharge valves. Drain the pump if it is to be shut-down for
long periods or installed in areas where the liquid may freeze. Refer to the Maintenance
section for instruction on draining.
Extended periods of dry running may result in permanent damage to the
pump and may cause surface temperature to exceed the operating
temperature of the pump. Ensure that the pump head temperature does
not exceed the
fl
ash point temperature of the
fl
uid or area. Shut down
pump for a no
fl
uid condition. Shut down the pump for a no
fl
ow condition.
CAUTION
CAUTION
Ensure the pump head temperature does not exceed the
fl
ash point
temperature of the
fl
uid or area.
Do not operate EagleDrives in two-wire mode. Control with input connected to
mains voltage. Contact your local Micropump distributor or contact Micropump
directly about a special pump/motor unit with regard to your speci
fi
c system
needs.
To maintain protection of internal drive controller, your external resistor
should be
fi
tted with
appropriate protection.
4-20mA Control Input
4-20mA Control
Install a 250 Ohm resistor across the yellow Speed Input and black Common lead wires.
Applying current across this resistor will result in a commanded proportional speed from
the Eagle Drive.
CAUTION
Recommended Resistor
VISHAY P/N PTF65250R00AYBF
