Aluminum_Sulfate_Feeder.docx

GENERAL REQUIREMENT

SOLICITATION ITEM CLIN 0002 Two Required

The following feeding system is offered to accurately meter and wet:

PRODUCTS: .........................................................................................................................................Aluminum Sulfate BULK DENSITY: .................................................................................................................................................. 50 PCF FEED RATE: .................................................................................................................................... 50 lbs / hr Maximum

EQUIPMENT DESCRIPTIONS

ITEM 2 -- MODEL W105 FEEDER – ALUMINUM SULFATE

The Model W105 Feeder features Acrison’s exclusive dissimilar speed, Double Concentric Auger Metering Mechanism for “conditioning” dry solid ingredients to provide an exceptionally high degree of accurate metering performance and overall dry solids handling versatility.

Standard Features

1. The Model W105 is equipped with a six-inch diameter Intromitter (conditioning auger).

1. The Intromitter and smaller metering auger are mechanically geared together to operate at proportional, but dissimilar speeds.

1. The feeder is supplied with a 3 cubic foot hopper, constructed of 316 stainless steel. Hopper includes a paddle-type low level probe and a vibrator.

1. Easy clean-out design, including a full open front feed chamber.

1. Feeder material of construction is 316 stainless steel. The Intromitter, discharge cylinder, drive shafts and seal components are 316 stainless steel. The metering auger is 316 stainless steel.

1. The conditioning auger is flange-attached to its drive shaft.

1. The metering auger includes a threaded attachment to its drive shaft.

1. The feeder is powered by a 1/2 horsepower, totally enclosed, variable speed AC inverter duty motor.

1. All available metering auger/discharge cylinder sets for this particular feeder model are interchangeable.

1. Volumetric metering accuracy is 1 to 2 percent or better (error) based upon a given number of consecutive one-minute samples.

1. The feeder is all steel in construction, totally rugged, and designed for exceptional longevity.

1. The Model W105 is completely dust-tight and virtually silent when operating, has unsurpassed quality and dependability, and is very low maintenance.

1. Feeder is mounted on a mild steel tubular feeder base.

1. All non-stainless steel surfaces are painted Acrison’s standard color.

DISSOLVING TANK

A Dissolving Tank provides a means for placing into solution a powdered or granulated additive with water, typically as part of an overall water treatment package.

Standard Features

1. 50 gallon working capacity, 11 gauge, 316 stainless steel.

1. Supplied standard with a cover and a removable inspection cap.

1. Includes inlet, discharge, overflow and drain connections.

1. The dissolving tank is equipped with high and mid level (conductance type) level probes constructed of 316 stainless steel to cycle the feeder and water inlet solenoid valve to maintain a constant strength solution while the tank is continuously discharged by the metering pumps supplied by others. Also, a high-high and a low level probe are provided for alarm purposes.

CONTROL PANEL

A NEMA 4 control panel will be provided to control the Acrison feeder/dissolver system as described above. The panel is supplied loose for customer mounting and wiring. Power requirements are 230/3/60.

Standard Features

0. VFD Motor Controller for Feeder

0. Feeder Hand/Off/Auto Control with Run and Alarm Lights

0. Solenoid Hand/Off/Auto Control with Open Light

0. Constant Strength Logic

0. Mixer On/Off Switch with Run and Overload Lights

0. Vibrator Hand/Off/Auto Control with Run Light

0. Hopper Low Level Alarm Light

0. Dissolver Low Level Alarm Light

0. Dissolver High Level Alarm Light

0. Dry Contacts as Required

1.

A solenoid valve and throttling valve both constructed of brass, and an acrylic rotameter will be supplied loose for installation by the contractor in the incoming water line. In conjunction with the feeder output rate adjustment, the dilution water and chemical will be introduced continuously and in the desired proportion when the tank level drops below the mid probe. The net fill rate should be adjusted to be 15 to 25% greater than the pump rate to allow the tank to fill gradually to the high probe at which point the feeder and water will stop.

1. The dissolving tank is equipped with a 900 RPM ½ HP Mixer. The mixer shaft and propeller are constructed of 316 stainless steel.

1. A water-operated dust and vapor removal unit (PVC) is included. Contractor is to pipe this component to a nearby drain. For proper operation, 1-2 GPM @ 50-60 psi water supply is required.

1. The dissolving tank is all steel in construction, totally rugged, and designed for exceptional longevity.

1. Unsurpassed quality and dependability.

1. Very low maintenance.

1. All non-stainless steel surfaces are painted Acrison’s standard color.

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