Micropump DB-380.B - Manual (Page 12)

12 of 20 MODEL 380 MOTOR INSTALLATION AND OPERATION MANUAL IOM # 7820
REV A
(10/99)
MICROPUMP, INC.
A Unit of IDEX Corporation
PO Box 8975, Vancouver, WA 98668-8975, USA
Phone: (360) 253-2008
Fax: (360) 253-2401
email: [email protected]
Website: www.micropump.com
MICROPUMP LIMITED
A Subsidiary of Micropump, Inc.
Howard Road, Eaton Socon
St. Neots, Cambs. PE19 3ET England
Phone: (44) (0) 1480-356900
Fax: (44) (0) 1480-356920
Website:
www.micropump.com
MOTOR WILL NOT OPERATE
CAUSE REMEDY
No power to the motor. Ensure that the proper voltage has been applied to
the motor power leads (red and black wires).
No control voltage applied. Ensure that the appropriate control voltage has
been applied to the control lead (white wire).
Also, ensure that the control power supply
common has been connected to the motor
common (black wire).
Thermal limit has activated. NOTE: The motor will restart automatically when
it has cooled down to below 76ºC (169ºF),
provided power and control voltage are still
applied.
Reduce the motor load by lowering outlet pressure
or reducing flow (by reducing motor speed).
Improve heat sinking by mounting the motor to a
cool, metal surface.
Improve heat dissipation by blowing air over the
motor.
Motor damaged Improper operation (including exceeding the
maximum power voltage) or reverse connection of
the power leads (black wire connected to +24VDC
and red wire connected to ground) can
permanently damage the motor. A damaged
motor cannot be repaired, it must be replaced.
MOTOR RUNS, BUT PUMP DOES NOT PRODUCE FLOW OR PRESSURE
CAUSE REMEDY
Suction valve closed.
Discharge valve closed. Open suction valve.
Open discharge valve.
Feed piping blocked.
Outlet piping blocked. Check piping for blockage.
Magnets have de-coupled. Shut off the motor.
Allow the motor to come to a complete stop.
Ensure the inlet and outlet valves are open.
Restart the motor.
Driving hub is loose on the motor shaft. Shut down the motor.
Remove the pump from the motor.
Tighten the driving-hub set-screw (observe
driving-hub set-height -- refer to the outline