Beta 3 U15a Service - Manual

Before performing any service:

| Symptom | Probable Cause | Solution | | :--- | :--- | :--- | | Low Pressure | Worn nozzle, clogged inlet filter, air leak in hose. | Clean/replace nozzle, tighten fittings, check water supply. | | Pulse/Surge | Air trapped in pump, faulty unloader valve. | Squeeze trigger to bleed air; adjust or replace unloader. | | Engine Won't Start | No fuel, spark plug fouled, low oil sensor tripped. | Add fuel, clean plug, check engine oil level. | | Water Leaking from Head | Worn high-pressure seals. | Install seal repair kit. | | Oil Leaking from Crankcase | Worn crankshaft seal or overfilled oil. | Replace shaft seal; correct oil level. | Beta 3 U15a Service Manual

| Parameter | Value | |-----------|-------| | System Type | 2-way active bi-amplified | | LF Driver | 15" woofer, 3" voice coil | | HF Driver | 1.4" titanium compression driver | | LF Amplifier Power | 400W RMS (Class D) | | HF Amplifier Power | 100W RMS (Class AB) | | Frequency Response | 45 Hz – 18 kHz (±3 dB) | | Crossover Frequency | 1.8 kHz (active, 24 dB/octave Linkwitz-Riley) | | Max SPL | 128 dB peak | | Input Sensitivity | 0.775V (0 dBu) for full power | | Input Impedance | 20 kΩ balanced | | AC Power | 100-120V / 220-240V (50/60 Hz) auto-select | | Power Consumption | 550W max | Before performing any service: | Symptom | Probable