2025 WPCD 3 Aerobic Digester Blowers

Blower Bid Specifications:
1. General Information
Cumming Utilities is soliciting sealed bids from qualified manufacturers or suppliers for the
provision of Aerobic Digester Blowers for the Bethelview Advanced Water Reclamation
Facility. All equipment shall meet the performance and technical requirements outlined below.
2. Equipment Summary
¿ Manufacturer : Inovair
¿ Manufacturer¿s Model : Inovair IM-30
¿ Total Blowers Required: 3 Units
3. Performance Requirements
Parameter Requirement
Rated Air Temperature (Normal) 68°F
Maximum Air Temperature 100°F
Minimum Air Temperature 40°F
Rated Capacity 1,750 scfm
Maximum Rated Discharge Pressure 11.6 psig
Barometric Pressure [TBD]
Site Elevation 1090 ft above MSL
Relative Humidity 80% avg
4. Equipment Specifications
Mechanical:
¿ Casing & Heads: Cast Iron
¿ Impellers: 7075 T-6 Aluminum
¿ Shaft: 8620 Stainless Steel
¿ Bearings: Anti-friction
¿ Seals: Carbon face
¿ Base: Steel with anti-vibration strips
¿ Finish: Corrosion-protective
¿ Number of Stages: 1
¿ Operating Speed: [As specified]
¿ Interstage Sealing: [As specified]
¿ Lubrication: Oil System
5. Motor Specifications
¿ Type: Inverter Duty, High Efficiency, Squirrel-Cage Induction (NEMA MG1 compliant)
¿ Power Rating: 125 HP
¿ Voltage: 480 V
¿ Phase: 3
¿ Frequency: [TBD]
¿ Mounting: Horizontal
¿ Enclosure: TEFC
¿ Service Factor: 1.0 or 1.15
¿ VFD Compatibility: Variable Load Class; VFD provided by Owner
¿ Winding Protection: Embedded thermal protection
¿ Hazardous Location Compliance: UL 674 certified
6. Evaluation Criteria
Bids will be evaluated based on the following:
¿ Compliance with technical specifications
¿ Manufacturer qualifications and references
¿ Warranty and support services
¿ Delivery lead time
¿ Price competitiveness
7. Owner's Rights
Cumming Utilities reserves the right to accept or reject any or all bids, to waive informalities,
and to accept the bid deemed in the best interest of the project and the Owner.