Checking the sump pumps float is easy and can be done by the homeowner. A burned out pump is usually casued by the float getting stuck in the ON position and Sump pump switches are the main link for controlling the sump pump. The main cause for sump pumps to not operate properly is the switch. Without the switch, the pump will not turn on. There are basically three types of switches; vertical, diaphragm, and tethered. There is an electronic switch that we will get into later. PUMP SWITCH AMAZON LINK: amzn.to/38rvaIhMODEL #60017-001This video shows how to replace the sump pump switch on a submersible unit. I've installed Buy Zoeller 270-0005 Direct. Free Shipping. Check the Zoeller BN270 1-HP Cast Iron Sewage Pump w/ Variable Piggy Back Float Switch (20' Cord) ratings before checking out. Step 5. Fill the pit with a garden hose or bucket and wait for the pump to cycle on. When the water rises in the sump pit, it increases the pressure on the switch. Once the pressure is high enough, it compresses a bladder within the switch that turns the pump on. As water is pumped out, the pressure decreases, and the pump shuts off. Compare. Wayne CDU1000 - 1 HP Stainless Steel Cast Iron Submersible Sump Pump w/ Vertical Float Switch. Model: CDU1000. 8% Buy This. (67) Q&A (4) $239.99. ----- NPDES COMPLIANCE FLOW MEASUREMENT MANUAL Table of Contents Disclaimer ii Acknowledgement iii Table of Contents iv List of Illustrations vii List of Tables ix Foreword 1 Introduction 3 Basic Methods 10 Weighing the Discharge 10 Volumet ric Methods 11 Sump Pumps 13 Orifice Buckets 15 Weirs 17 Sharp Crested 17 V-Notch 19 Rectangular 22 Cipolletti 27 Other Weirs 30 Submerged Weir Conditions Wells, Sump Pumps and Septic Sewage Systems - stop basement flooding options - Bought a house recently and got my first basement/garage flood this weekend. I know nothing about this stuff so bear with me and correct me if I name things wrongly. The house was built in 1951. It's a 1 1/2 story cape, about 1600 sq feet.