
Rotary Lobe DEFENDER Plus Packages – The DEFENDER Plus Series
Proven Tri‑Lobe Reliability - Now with Integrated Controls
Defender Plus™ is a fully integrated rotary lobe blower package that combines the proven Defender tri‑lobe platform with a modern control system, updated package assembly, and a footprint designed for real wastewater blower rooms. Built to convey air and gas at low pressures, Defender Plus supports continuous duty service, stable airflow delivery, and dependable operation across variable process conditions.
Core Package Features
- Positive displacement rotary lobe blower with tri‑lobe rotors
- Integrated blower package: blower, motor, belt drive, controls, silencers, and enclosure, factory assembled as a complete system
- Frame options: available in Frame 3 and Frame 4 sizing
- Single‑piece cast iron cylinder for strength and heat dissipation
- Helical timing gears for smooth, quiet operation
- High‑strength shafts + long‑life bearings rated for severe duty
- Dual splash lubrication on drive and gear ends
- Fully boxed steel base for rigidity and transport
- Enclosure with insulated panels designed for quieter performance
- Optimized discharge silencer
- Tunable inlet filter/silencer
- Reduced pulsation design to lessen downstream wear
Smart Controls (Integrated)
- Full‑color touchscreen Governor Controller with real‑time operating data and diagnostics
- Built‑in alarms, diagnostics, and equipment safeguards to reduce unplanned downtime
- iConn™ remote connectivity for monitoring, notifications, data logging, and SCADA integration
- Fixed or variable speed options for application flexibility
Maintenance-Friendly Design
- All routine maintenance accessed from the front
- External oil level checks (running or stopped)
- Easy oil changes via accessible fill and drain hoses
- Automatic belt tensioning system
- Simple belt replacement without special tools
Built for Municipal Wastewater Reality
- Reliable, continuous‑duty airflow that supports biological process stability
- Wide turndown capability for changing process demand
- Reduced noise levels for plant environments
- Lower maintenance time with front-access serviceability
Smarter Operation = More Confidence
- Faster troubleshooting with on-screen diagnostics and alarms
- Better protection against critical events with automatic shutdown safeguards
- Improved visibility for operators and maintenance teams with remote insight (iConn™)

