Prior To Installation; Electrical Hook-Up - MDM C-Shell 4X3-10 Installation And Service Manual

We congratulate you on your choice of the C•Shell
and meticulously constructed to give you the dependability of yesterday. To insure proper performance and longevity, we urge you to follow the
instructions in this manual. If you have any questions, contact MDM Incorporated for assistance.

PRIOR TO INSTALLATION

The instructions below should only be followed if the pumps are placed in storage.
1. Once received from factory, store all crated pumps in a dry and covered location.
2. Make certain all uncoated machined surfaces are coated with a dielectric or marine grease every seven days to prevent oxidation.
3. Rotate motor shaft multiple times once a week.
INSTALLATION
1. Locate the pump as near the fluid source as possible. We recommend a flooded suction installation.
2. Mount motor base to a secure, immobile foundation.
3. The pipe fittings should be self-supported and in neutral alignment with each port. The fittings must not be forced into alignment which may
cause premature line failure or damage to the pump volute.
4. Never restrict the intake. Keep both input and discharge lines as free of elbows and valves as possible i.e. five feet per second max and a straight
run of at least 10 pipe diameters on the suction side. This will reduce friction losses and maximize output.
5. The C•Shell Pump is not self-priming. It must not be run dry.
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ELECTRICAL HOOK-UP

1. Check that supply voltages match the motor's requirements. The supply voltages can be found on the motor nameplate.
2. Verify that the internal motor leads (load-side) are connected according to the specifications shown on the motor nameplate and that they
match the supply voltage (line-side).
3. Verify motor rotation with rotation meter. Incorrect rotation can cause serious damage to pump and/or motor. MDM Incorporated does not
recommend checking rotation by quickly switching power on and off because serious damage can occur.
4. Supply power wiring (load side) should be protected by conduit or by cable and be of proper gauge. Length should be no longer than necessary.
5. Power should be drawn directly from an enclosure with circuit breaker protection or with a fused disconnect switch.
WARNING: ALWAYS SHUT OFF ELECTRICAL POWER BEFORE INSTALLATION AND / OR SERVICING THIS PUMP!
ALL ELECTRICAL WIRING SHOULD MEET STATE AND LOCAL ORDINANCES. IMPROPER WIRING MAY NOT ONLY BE A SAFETY HAZARD BUT MAY
PERMANENTLY DAMAGE THE MOTOR AND/OR PUMP! 50 HZ MOTORS AVAILABLE - CONTACT YOUR SUPPLIER FOR INFORMATION.
PUMP END ASSEMBLY/DISASSEMBLY
Contact a factory authorized agent, service center, or factory directly before disassembly or assembly. MDM Incorporated factory hours are 7:30am -
4pm MST, Monday through Friday. You can reach us toll free at (719) 634-8202 or e-mail us at sales@mdminc.com.
PROUDLY MADE
IN THE USA
®
WARNING: Eye protection is strongly recommended
4X3 Centrifugal Pump. It has been carefully designed using the advantages of today's technology
®
Generated from efficiency. Adapted for flow. Built for longevity.
4X3 GENERAL ASSEMBLY
© MDM INCORPORATED
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