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March AC-4C-MD Magnetically Coupled Pump

We are using our Alphatross with Shell Diala Oil AX instead of the Low Odor Base Solvent that was supplied by NEC. We have a few hundred gallons of this oil on hand, which made it more cost effective to replace the pump than to purchase the 8 or so gallons of LOBS ($93.30/gallon on 2021-08-09). The transformer oil is much more viscous than the LOBS, (9 mm2/s vs 0.1 mm2/s at 40°C), necessitating a larger pump to maintain adequate flow. March suggested going with an AC-4C-MD 115V with trim to 2.5 inches. The original system from NEC shipped with a March AC-3CP-MD-115VAC.

March pump page: March curves page: March pump manual: 2D Drawing: Installation guide:

March also provided us with a 3D model in STEP format for use in our modeling.

march_pump.txt · Last modified: 2021/12/22 12:27 by leblanc