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the magnet field. Hold the impeller firmly to resist the magnetic attraction. Keep magnets away from
and free of any metal chips and particles.
Do not overtighten fasteners. Contact March Manufacturing for appropriate torque levels.
Care must be taken that the “O” Ring sits in the groove appropriately. Do not pinch or nick the O-Ring.
Before connecting power, rotate the motor fan to ensure there is no binding or rubbing of the drive
magnet against the rear housing.
Disassembly
Disconnect power from the pump, and drain the pump.
See “Draining the Pump” section below.
After draining, separate front housing/cover from rear housing. Ensure that no liquid is remaining on
the parts.
Separate the parts. Exercise caution in removing impellers on all models -- but especially on the 7.5, 8,
and 10 Series -- due to the strong magnetic forces between the impeller magnet and drive magnet.
When handling impeller hold onto the outer diameter of the impeller vanes with both hands and extract
the impeller from the rear housing. Hold the impeller firmly to resist the magnetic attraction as you
remove the impeller. Keep magnets away from and free of any metal chips and particles.
If any part appears damaged or defective, take pictures and contact a March Distributor or March
Manufacturing.
Individual parts are listed on the appropriate pump manual.
Shut Down Procedure
1. Disconnect the power/turn off motor.
2. Carefully close the discharge valve.
3. Close suction valve.
*Caution must be exercised with automated valves.
Draining the Pump
1. Wear appropriate safety gear.
2. Disconnect the power.
3. Close suction and discharge valves.
4. Remove pipe/hose/tube from suction and discharge.
5. Unscrew/untighten fasteners from wet end.
6. Direct outlet downward into appropriate container.
NOTE: Observe local laws and regulations for handling and disposing hazardous liquids. Do not get
motors wet. Not all motors are dust proof or submersible proof.
Other
For further information on temperature ratings, pressure ratings, horsepower, and NPSHr, utilize the
pump’s specific pump manuals and performance curves, which can be found on
Always follo
w the recommendations of March Manufacturing’s
specified otherwise by a March Manufacturing representative.
