SUGGESTED SPECIFICATION FOR DUPLEX VSS-QD UNIT WITH TYPE SBS CONTROLLER FOR INSTALLATION IN CONCRETE PIT

Furnish and install, as shown on plans, a Federal Pump Corporation Type VSS-QD Quick-Disconnect duplex submersible sewage pump unit. The pumps shall be of cast iron construction with non-clog, balanced impellers, and rated as shown in the pump schedule.

Each pump shall have Quick-Disconnect fittings including base plate, guide brackets, base elbow and lifting cable.

Each pump shall be removable from the pit by riding up on the guide rail (4x4 wide flange beam), without disconnecting any piping or electrical connection, and without anyone entering the pit. Pumps shall be relowered to their operating position in the same manner.

Each motor shall be air filled, protected by double-sealed oil chamber, and shall have a stainless steel shaft, thermal sensors, moisture sensing probe in the seal chamber, and 25 ft. waterproof cable. Motors shall be rated as shown in the pump schedule.

Pump control shall be by a Type SBS Submers-a-bulb controller, including four mercury tube bulbs on Style 1 suspension bracket. A NEMA-4 junction box shall be provided together with a control panel in a NEMA-1 wall-mounting enclosure, including therein fusible disconnect switches, magnetic starters, HOA selector switches, automatic pump alternator, required relays and transformers, pump-run lights plus an alarm bell and silencer with lights to indicate high water and outer seal failure conditions.

For concrete pit and thru-cover pump discharge, add the following specification paragraph:

Fumish a Style PF-1 angle iron pit frame and steel cover for the concrete wet pit. The pit cover shall be gas-tight with pump removal plates, flanged openings for pump discharge pipes, vent connection and control openings. The frame and cover shall have a corrosion-resistant coating plus required brackets for the Quick-Disconnect guide rails, and shall be fabricated for a pit size and top opening size as shown in the pump schedule.

For concrete pit and under-cover pump discharge, add the following specification paragraph:

The pumps shall discharge through the side wall of the wet pit. Provision shall also be made in the side wall for venting and for control and power wires. Fumish a Federal Type Q access door for installation in the top slab of the concrete pit. Pit size and door size shall be as shown in the pump schedule.

The access door shall be single-leaf with steel frame, diamond steel leaf, steel hinges and torsion bars for easy opening. The door and frame shall have a corrosion resistant coating plus required brackets for the Quick-Disconnect guide rails.

Also furnish a concrete valve chamber of the size shown in the pump schedule, with steel-covered top access opening, to house the discharge check valves, gate valves and wye fitting.

Pump Schedule:

Pump model Number:

_______GPM per pump _______FT. TDH

Motor HP:_______ RPM ________

Phase:________ Cycles: 60 Volts:_______

Pump Pit Size:_______ in. x_______ in. x_______ in. deep

Top Opening (or Access Door) Size:_______ in. x_______ in.

Valve Chamber Size (If Any): _______ in. x_______ in. x_______ in. deep