McDonnell Miller MM-217M Low Water Cut-Off/Pump Controller Instruction Manual

This manual provides installation, wiring, and operational instructions for the McDonnell Miller MM-217M low water cut-off and pump controller.


McDonnell Miller MM-217M Low Water Cut-Off/Pump Controller Instruction Manual - cover page
Brand
McDonnell & Miller
Category
Other
Document type
User Manual
Language
English
Pages
14
File format
PDF
File size
1.6 MB
Published
05 November, 2026
Updated
05 November, 2026
MD5 checksum
19DBDD33F90041757AD2B38932331CDF

About this manual

This document serves as the instruction manual for the McDonnell Miller MM-217M (Model 210341) low water cut-off and pump controller. It covers installation procedures, including determining the correct elevation for the unit, installing the low water cut-off body, and mounting the water gauge glass. The guide also details electrical wiring requirements for various models, including Series 150S, 157S, 158S, and 159S, with specific diagrams for motorized valves and combination pump controls.

What's inside

  • Operation
  • Installation Tools
  • Installing the Low Water Cut-Off
  • Installing a Water Gauge Glass
  • Electrical Wiring
  • Wiring Diagrams
  • Testing
  • Maintenance

Specifications

Maximum Pressure150 psi (10.5 kg/cm2)
Enclosure RatingNEMA 1 General Purpose
Full Load Amperes (120V)7.4 A
Full Load Amperes (240V)3.7 A
Motor Horsepower1/3 Hp
Warranty1 year from installation or 2 years from manufacture

Frequently asked questions

What is the maximum pressure rating for this controller?

The maximum pressure rating is 150 psi (10.5 kg/cm2).

What tools are needed for installation?

You need two pipe wrenches, one flathead screwdriver, and pipe sealing compound.

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