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This is an explosion proof, submersible sewage pump for use in hazardous locations rated Class 1, Division 1, Groups C & D. Pump has a 3 inch maximum solid handling capability.
Features
Cast iron, ASTM A48, Class 30, two vane semi-open, non-clog impeller design with pump out vanes for mechanical seal protection
Heavy duty gray cast iron, ASTM A48, Class 30 casing. Volute type casing with 4", 125#, flanged, horizontal discharge conforming to ANSI standards
Compatible with A10-40, A10-60 cast iron or A10-40B, A10-60B cast iron and brass (non-sparking) slide rail assembly
Tandem mechanical seal system in an oil filled seal chamber. Each seal operates independently to ensure fail safe performance
Standard seals are carbon rotary and ceramic stationary. Outer seals are designed for easy replacement
Pump has a standard dual probe moisture detection system located in an oil filled seal chamber. The sensor leads must be connected to a "seal fail circuit" in the control panel
Motor is designed for continuous submerged operation and the maximum allowable runtime in air is 15 minutes
Air filled, Class F insulation motor
Motor conforms to the latest requirements of NEMA, IEEE, ANSI and NEC standards
Applications
Designed for a variety of hazardous commercial and industrial applications such as:
Sewage systems
Flood and pollution control
Dewatering and effluent
Hospitals
Trailer courts
Hotels and motels
Control Panel Requirements
To maintain warranty coverage and agency listings, Control panels must have:
Moisture detection system – to warn of a seal failure
Thermal protection system – winding thermostats open the pilot circuit of the magnetic motor controller before dangerous temperatures are reached
Overload (Over Current) protection – Class 10, quick-trip type overload protection must be provided in control panel
Intrinsically safe relays – use "intrinsically safe relays" in a Class 1, Division 1, environment to power the float switches. They eliminate the danger of a spark if a switch cord becomes damaged. Intrinsically safe relays are available as an option from most panel suppliers. Other level control systems are available and may be applicable for this service, consult with your control manufacturer.
Typical control option: Guaranteed Pump Submergence Float – Many engineers specify a redundant OFF float or a Guaranteed Pump Submergence Circuit. This provides a second OFF float as protection from “OFF” float failure or hang up which protects the pump(s) from running dry.
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