DOC No: PN 86880 REV A
18
OPERATION
Starting or running the pump with the discharge valve closed may
result in overpressure in the discharge pipe.
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 ash point temperature of the uid or area. Shut down pump for
a no uid condition. Shut down the pump for a no ow condition.
Ensure the pump head temperature does not exceed the ash point
temperature of the uid or area.
Start-up Procedure
Before starting the pump ensure that any valves in the inlet or discharge lines are
open and that any inlet lters are clean and free from obstruction.
1. Set the external control signal input to minimum value (0 VDC) or >97% PWM IN
2. Set the Main Power IN (12 VDC to 36 VDC) to ON. With the control input set to
0V or < 3% PWM IN 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 lled with uid. If
the pump fails to prime, stop the pump and ll the pump head with liquid.
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 ttings are free from leaks.
Flow rate should always be adjusted by controlling motor speed where
possible. Ensure that overpressure does not occur in the discharge
pipe. NEVER throttle ow by an inlet valve.
Shut-down Procedure
Switch o the EagleDrive by:
1. Slowly decreasing the external control signal input to the minimum value.
2. Check that the unit runs down in a steady manner.
3. Switch o power supply.
Once stopped, 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.
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