WATERWORKS INTERNATIONAL
AUTOMATIC WATER FILTER SYSTEMS
Premier-Flo self-contained filter plants shall consist of the following major components: base, pump, motor, strainer, facepiping, valve, controls, and filter vessel. The system shall be shiped as a complete factory assembled and tested unit. Filter media shall be shiped with the unit for field installation.
| COMPONENT | SPECIFICATION | |
| BASE | Standard: | High density black polyethylene |
| Addition: | Structural steel, primed and painted | |
| Addition: | Type 304 stainless steel | |
| PUMP | Standard: | Self-priming; close grain cast and machined brass volute, impeller, and pump-to-motor coupling; close coupled to a TEFC motor; and a capable of GPM at feet TDH. |
| MOTOR | Standard: | TEFC, heavy gauge rolled steel case; NEMA
56C frame; 1.15 service factor at 40°C over ambient; HP; and at the following VAC and phase: single phase 120V; 208V; 230V three phase 208V; 230V; 460V |
| Option: | 575V three-phase. | |
| STRAINER | Standard: | Basket type, FRP body, ABS basket, clear lexan cover, held in place by stainless steel band clamp |
| FACEPIPING | Standard: | Schedule 80 PVC; backwash sight glass; influent / effluent pressure gauges, 0-60 psi, liquid-filled |
| Addition: | Schedule 80 CPVC for system water temperatures of 120° to 180° F. | |
| VALVE | Standard: | CPVC, 3-way, valves with 24 VAC electric actuation. |
| CONTROLS | Standard | (three phase or single phase, Automatic backwash operation) UL Listed control panel with: minimum NEMA 3R enclosure; motor starter with thermal overload and short circuit protection; transformer to convert supply to 24 VAC control power; through-the-door power disconnect; differential pressure switch; programmable relay with adjustable timing controls for backwash steps; 30-second time delay in delta P switch circuit, 1-100 hour "re-setting" timer for either/or backwash initiation; manual ON/OFF switch; and manual backwash initiation switch. |
| Option: | Backwash counter. | |
| Option: | Fresh water backwash from municipal water supply. | |
| Option: | Fresh water backwash from static water supply using pump to assist. | |
| Option: | Integral backwash effluent regenerator for zero discharge. | |
| Addition: | Backwash lockout between/among units, to prevent simultaneous backwash of multiple filter units; 0-15 minute adjustable lockout time delay relay. | |
| Addition: | Contacts for connection to BMS, additional specifications required from owner. | |
| Addition: | Contacts and HOA switch for remote start/stop. | |
| Addition: | Overload pilot light. | |
| Option: | Manual backwash; single-phase; three-phase. | |
| VESSEL | Standard: | 18 gauge type 304 stainless steel; cycolac and styrene internals; 50 psi working pressure; fitted with tank drain, manual air relief valve, 35 psi automatic pressure relief valve. Maximum flow rate GPM at 20 GPM per square foot filter surface area. |
| MEDIA | Standard: | Quartzite or silica in nature, hard, not smooth, uniformity coefficient of 1.7, relative size of .45 to .55 mm, containing no more than 5% flat particles or more than 1% clay, loam dust, or toher foreign material. Media weighs 100 lbs per cubic foot. |
| NOTE | Backwash flow rate, irrespective of water source, must be no less than 75% and no greater than 100% of the vessel's designed maximum gpm. Backwash duration is factory preset at 3 minutes and is field adjustable. | |