14
DOC No: 8540 REV D
Flow rate should always be adjusted by controlling motor speed. Ensure
that overpressure does not occur in the discharge pipe. NEVER throttle
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 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 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, 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.
Shut-down Procedure
Switch off the EagleDrive by 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 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.
Do not operate EagleDrives in two-wire mode (with control input
connected to mains voltage). Contact your local Micropump distributor
or contact Micropump directly about a special pump/motor unit with
regard to your specic system needs.
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