System One Pumps S1-101 Construction and Features

Frame Mounted Centrifugal Pump

Major Elements of Pump Units (of Interest) Power End Wet End Driver Foundation (Baseplate)

Pump “Wet End” Impeller Casing w/ Feet Backcover (Seal Chamber)

Wet End – Casing w/ Feet Centerline Mounting Support Legs/Feet Discharge Flange Suction Flange Casing Drain & Plug (Option)

Impellers – Basic Types Enclosed Open

Wet End – Impeller “Eye” Area Vanes Shroud

Why Impellers are Trimmed Maximum Impeller H vs Q Head Minimum Impeller H vs Q TDH System Curve – System Relationship of Q & H GPM

Wet End – Backcover (Seal Chamber) Wetted Face (Front) Viewing Back Side Mechanical Seal Gland Studs & Nuts Mechanical Seal Environment Mechanical Seal Chamber Flush Tap

Wet End – Jacketed Backcover (Option) Sometimes the backcovers are jacketed. Allows an external fluid to circulate around the mechanical seal environment. Maintains proper temperature control (heating or cooling) of the mechanical seal. External Fluid Circulation Chamber

Wet End – Backcover - Other Common Options Different chamber designs Taper bore and cylindrical bore. Throttle Bushings Various designs & materials. Restricts flow into mechanical seal chamber. Most bushings require special machining of backcover. Shortened chamber depth to accommodate special mechanical seal designs

Wet End (Component) - Mechanical Seal Keeps the Liquid Being Pumped from Leaking Out Past the Pump Shaft Installed on the Shaft in the Backcover Seal Chamber A Purchased Item (if Installed) Many Global Manufacturers

Wet End - Simple Mechanical Seal Single Seal

Pump “Power End” Frame (Bearing Housing) Pump Shaft Adapter Note; Adapter Not Needed On Smallest (Frame “S” & “SD”) Pumps

Power End – Rotating Element Assembly Shaft (Imp. Threads) Inboard/ Radial Bearing Oil Flinger/Filter Outboard Angular Contact Thrust Bearings Bearing Retainer Cover Shaft Wetted End

Power End - Frame Oil Filler Assembly Micrometer Adjustment Assembly Eye Bolt (Lifting) Bearing Cartridge Shaft Assembly Labyrinth Oil Seal (Outboard) Labyrinth Oil Seal (Inboard) Oil Bath Reservoir Bearing Frame Foot

Power End – Micrometer Impeller Adjustment Assembly • Patented Feature • Precise Repeatable Impeller Settings • Each Line Represents .003" (.08 mm)

Why Impellers Are Adjusted Set initial pumping clearance (impeller to casing) based on temperature of pumpage .015” ≤ 100°F Add .002” for every 50°F above 100°F .38mm ≤ 38°C Add .05mm for every 28°C above 38°C Pumping Clearance

Why Impellers Are Adjusted (Cont.) To compensate for wear and renew performance. Typical reduction in performance due to wear (based on 0.01”/year)

Effect of Impeller Clearance

Power End – Oil Sight Glass & Magnetic Plug Observe Oil Level & Condition Mag. Plug to Maintain Clean Oil

Power End – Cooling Coil Option Cools the Oil and Bearings

Power End - Adapter Adapter Note; Adapter Not Needed On Smallest (Frame “S” & “SD”) Pumps

Power End - Adapter

How It All Comes Together Pump & motor/driver mounting type, size and options are selected. Based on customer requirements, application parameters, motor/driver specifics and sales policies C-Face or D-Flange Adapter Mounting Example

Baseplate & Flexible Coupling Baseplate is to what the pump & driver are commonly mounted. Coupling connects the output shaft of the driver/motor to the pump shaft. Flexible Coupling Typical Baseplate

SYSTEM ONE PUMPS Wet End Parts A. VOLUTE (CASING) A B. IMPELLER C. STUFFING BOX D. SEALING DEVICE E. BACKCOVER

SYSTEM ONE PUMPS Power End Parts H B A I L D D C E K E G F J A. BEARING HOUSING B. FRAME ADAPTER C. SHAFT D. BEARINGS E. BEARING PROTECTION F. OIL SUMP AREA G. OIL SIGHT GLASS H. BREATHER I. BEARING RETAINER J. OIL DISPERSION THRUST BEARING CARTRIDGE IMPELLER ADJUSTMENT I L D D C E K E G F J

System One Pumps Thank you! (Send orders.)