Ql — Bow Thruster Manual

The QL bow thruster provides lateral thrust for improved low-speed maneuvering and docking. Typical models are tunnel or pod installations with electric or hydraulic drives; QL focuses on compact units for small-to-mid sized recreational boats.

| Symptom | Manual Reference (Section) | Likely Cause | Solution | | :--- | :--- | :--- | :--- | | | Section 5.1 - Control Circuit | Fuse F1 (5A) blown or battery switch off | Replace fuse; engage battery switch | | Motor runs but no thrust | Section 6.2 - Mechanical | Sheared drive pin (sacrificial pin) | Replace drive pin (PN: VETUS 6.2.3) | | Thruster works one direction only | Section 5.4 - Contactors | Stuck relay or solenoid | Tap contactor gently; check for corrosion | | Loud grinding noise | Section 7.1 - Annual Maintenance | Worn carbon brushes or dry bearing | Replace brushes (manual has part #) | Ql Bow Thruster Manual

: The thruster motor can be mounted at any angle from 0∘0 raised to the composed with power 90∘90 raised to the composed with power . However, if installed between 45∘45 raised to the composed with power The QL bow thruster provides lateral thrust for

: Use the thruster in short pulses of 2–5 seconds. This prevents the electric motor from overheating—which can reach up to 150 raised to the composed with power C —and protects your battery bank from rapid depletion. Speed Limits However, if installed between 45∘45 raised to the

The QL manual is adamant about the . For electric models: