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Assembly/Disassembly
Magnets
Magnets on specific models may be strong enough to pull the wet end and motor end quickly together
during assembly or disassembly.
WARNING: Do not put fingers between the two mating surfaces (between impeller magnet and/or
impeller vanes and the rear pump housing) during assembly or disassembly, especially for the 7.5, 8,
and 10 Series. Magnets may attract tools, use caution.
Assembly
Contact March Manufacturing for proper assembly procedure concerning drive magnet and motor
bracket.
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 gently engage the impeller into
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.
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