Summary: Myers Non-Clog Pumps Installation and Service Manual

This document is an Installation and Service Manual for Myers Pentair Pump Group non-clog pump models 4V, 4R, 4VH, 6VH, 4VC, and 6VC. The manual provides comprehensive technical guidance for installation, operation, maintenance, and troubleshooting of these pumps, which are designed for handling raw sewage and waste water with solids up to 3 inches in diameter. The pumps feature non-clog impellers (two vanes on all models except the 4R series, which uses one recessed impeller), with 4-inch and 6-inch standard flange discharge options depending on model. Motor specifications vary by series, with horsepower ratings ranging from 1 to 60 HP and RPM ratings of either 1150 or 1750. Available voltages include 230 volts (single phase only), and 200, 230, 460, or 575 volts (three phase), with 4VC and 6VC models offering dual voltage options.

Installation requirements emphasize that only qualified electricians may perform installation and wiring using approved starter boxes and switching devices. All motors contain heat-sensing thermostats that automatically reset when cooled, and pumps include seal failure detection through probe-installed sensors in the seal chamber with warning light indicators at control panels. Power cords measure 25 feet standard with extension options available, and cord sizing depends on motor horsepower, voltage, and distance from the wet well per provided cable sizing tables. The manual includes detailed sections on electrical connections, motor winding resistance specifications for all models and voltages, impeller and pump case replacement procedures with specific torque values for cap screws, and comprehensive troubleshooting guidance addressing common operational issues such as air-locked impellers, clogged intakes or discharge valves, improper rotation, seal failures, and motor overload conditions. Pump dimensions and connection box wiring diagrams for simplex and dual pump systems are provided as reference materials.