March Safety Instructions, Preventive Maintenance, and Troubleshooting Guide
Read this sheet and the appropriate pump instruction manual before installing and operating any pump. Failure to follow safety instructions may result in injury or death.
These pumps utilize magnets. Any individuals with pacemakers, implanted defibrillators, electronic medical devices, metallic heart valves, or sickle cell anemia should consult a health care professional before working with these pumps.
Pumps may be heavy, take caution when lifting and/or moving a pump.
Unpack the pump and/or parts and check for signs of shipping damage. If damage is detected take pictures and contact the carrier. Check that all ordered parts are included.
Remove all labels and stickers from all wet end part surfaces that come into contact with the liquid (impeller, shaft, thrust washer, housing(s), etc…). Do not remove labels on the motor, and/or exterior of the pump. Do not remove labels from the exterior of marine pumps.
For stainless steel pumps, the impeller, thrust washer, and shaft are packed separately.
Installation of Complete Pump
Pumps should be securely fastened. Install the motor per local and national electrical codes. Always ground the pump motor. Only use the specified voltage listed on the nameplate, do not operate the pump with a different voltage then specified on the motor nameplate. Do not exceed the service factor of the motor. Do not cover the motor. Check all electrical connections with the wiring diagram found on the motor.
Most March Pumps are not self-priming pumps. Liquid must flow naturally to the pump. Do not operate the pump until liquid is inside of the pump. Never run the pump dry.
If the pump is in a hazardous environment, utilize an appropriate explosion-proof motor.
Do not submerge the pump unless it is a submersible pump.
The pump has moving parts when in operation. Follow local safety standards for locking out the motor during assembly or disassembly.
The pump may be used for transferring various chemicals. Always wear appropriate person protective equipment (including protective eye care, gloves, clothing, etc.) and follow safety procedures during operation of pump. Procedures should be in place for draining and decontamination of pump before disassembling or inspecting the pump.
Do not operate with a closed suction or discharge valve. Do not start with a closed suction valve.
The wet end and/or motor may become hot during operation.
Always check with a March Manufacturing representative before pumping any liquid with solids.
March Manufacturing has not established a general preventive maintenance schedule for its line of pumps, as each application presents its own specific conditions. The pump should be checked upon installation, first use, and monitored for one week. If any abnormality is detected concerning vibration, noise, electric current, flow or head rate, turn off the pump immediately and inspect individual parts.
The pump should be periodically inspected for wear on the impeller bushing. The frequency of the inspection should be determined by the customer.
Follow motor lubricating oil instructions as found on motor label. (Not every motor requires lubrication)
Bolts may loosen after extended running. Tighten bolts if loose.
Remove excessive dust or particles from motor.
Do not clean exterior of pump or motor with any flammable solvents.
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.
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.
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
Disconnect the power/turn off motor.
Carefully close the discharge valve.
Close suction valve. *Caution must be exercised with automated valves.
Draining the Pump
Wear appropriate safety gear.
Disconnect the power.
Close suction and discharge valves.
Remove pipe/hose/tube from suction and discharge.
Unscrew/untighten fasteners from wet end.
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.
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 www.marchpump.com
Always follow the recommendations of March Manufacturing’s Chemical Resistance Guide unless specified otherwise by a March Manufacturing representative.
Liquids containing ferrous metal fines should not be pumped.
If magnets decouple, stop the pump. Running the pump with the magnets decoupled will weaken the magnets.
Lack of Flow/Head
Check for air leaks in suction piping.
Make sure that the pump is primed and not running dry.