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280-Series

Product catalog summary

Overview: The Liberty 280-Series is a range of 1/2 hp submersible effluent/sump pumps designed for on-site wastewater systems, liquid waste transfer, and commercial heavy-duty sump pump applications. These pumps are built with Liberty's unique "Uni-Body" casting for reliable performance.

Key Features:

One-piece "Uni-Body" casting for durability.
Quick-disconnect 10' standard power cord for easy replacement.
Permanently lubricated upper and lower bearings.
Oil-filled, hermetically sealed motors with thermal overload protection.
Stainless steel removable bottom screen and rotor shaft.
Corrosion-resistant stainless steel fasteners.

Model Variants:

115 V Models: 280 Manual, 281 Wide-Angle Float with Quick Disconnect, 283 Wide-Angle Float with Series Plug, 287 VMF for heavy-duty applications.
208-230 V Models: 280HV Manual, 281HV Wide-Angle Float with Quick Disconnect, 283HV Wide-Angle Float with Series Plug, 287HV VMF Switch.

Specifications:

Vortex style impeller for handling solids up to 3/4".
1-1/2" discharge.
Maximum fluid temperature: 140˚ F.
Motor: 1/2 hp, 60 Hz, 3450 RPM, oil-filled, thermally protected.
115 V models: 8.5 amps; 208/230 V models: 4.6 amps.

Performance and Dimensions:

Weight: 29 lbs.
Height: 13"; Major Width: 10" (model 287).
Minimum Sump Diameters: Model 281, 283 - 14"; Model 287 VMF - 10".
Factory switch settings: Turn on level - 13" (Model 281, 283), 9.5" (Model 287); Turn off level - 7" (Model 281, 283), 4.0" (Model 287).

Additional Information:

Wide-angle floats are mercury-free and mechanically activated.
Model 283 features a fully adjustable wide-angle float.
Optional cord lengths available: 25', 35', 50'.

Catalog excerpts

280 series V11:280 series C1V4 8/30/11 11:14 AM Page 1 280-Series Cast Iron Quick-Disconnect Power Cord Submersible Effluent/Sump Pumps 1/2 hp 1-1/2" Discharge 3/4" Solids Handling One-Piece Cast Motor Housing Features: • Liberty’s unique, one-piece “Uni-Body” casting • Quick-disconnect 10' standard power cord allows replacement of cord in seconds without breaking seals to motor. (other lengths available) • Permanently lubricated upper and lower bearings • Oil-filled, hermetically sealed motors with thermal overload protection • Stainless steel, removable bottom screen • Stainless steel rotor shaft • Stainless steel fasteners 115 V. Models: 280 Manual 281 Wide-Angle Float with Quick Disconnect 283 Wide-Angle Float, Series Plug MODEL 283 287 VMF, vertical magnetic float for heavy-duty sump pump applications 208-230 V. Models: Available with Vertical Float 280HV Manual 281HV Wide-Angle Float with Quick Disconnect 283HV Wide-Angle Float, Series Plug 287HV Vertical Magnetic Float (VMF) Switch Wide-Angle Floats are mercury-free, mechanically activated.

Open the catalog to page 1

1/2 hp Submersible Effluent/Sump Pumps The Liberty 280 series provides a cost effective "mid- range" pump for on-site waste water systems, liquid waste transfer and commercial heavy-duty sump pump applications that require higher head or more flow. Designed around Liberty's unique "Uni-Body" casting, the 280-Series will provide years of reliable performance. • Vortex style impeller permitting passage of solids • 416 stainless steel rotor shaft • Permanently lubricated upper and lower ball bearing • Epoxy powder coat finish • All fasteners - corrosion-resistant stainless steel • Stainless steel...

Open the catalog to page 2

280-Series

280-Series

Catalog excerpts

All Liberty Pumps catalogs and technical brochures