Ql Bow Thruster Manual < GENUINE → >
QL Bow Thruster Manual
The (often branded under Volvo Penta's Quality Line) is a critical document for owners of legacy BP and CT series units. Since Volvo discontinued the QL line over a decade ago, the manual is now a "survival guide" for maintaining these aging systems rather than just a set of operating instructions. Manual & Maintenance Overview
- Electrical Safety: Bow thrusters draw hundreds of amps. The manual contains mandatory cable sizing charts and fuse ratings. Guessing these values can lead to fires.
- Intermittent Use Protocols: QL thrusters are rated for intermittent (S2 or S3) duty cycles. The manual specifies exact run times (e.g., 3 minutes on, 3 minutes off). Ignoring this burns out the motor.
- Hydraulic vs. Electric: QL produces both electric (most common) and hydraulic models. The maintenance schedule differs drastically.
Key Components:
1. Overview of QL (Quick) Bow Thrusters
If you don’t have the original manual, download the closest Quick model manual – the principles are nearly identical across their BT range. Always follow the voltage and current limits specific to your model to avoid permanent motor damage. Ql Bow Thruster Manual
- Propeller: QL-PROP-55 for 55kgf models (left-hand vs right-hand available).
- Anode kit: QL-ZINC-T55.
- Control relay box: QL-RELAY-12V-250A.
- Joystick panel: QL-JOY-PRO.
Part 7: Upgrading or Replacing Parts – Using the Parts Manual
4. Maintenance Schedule (Every 6–12 months)
If your manual is beyond repair (moldy, torn) or your thruster is discontinued, do not panic. QL has evolved into the VETUS BOW series. QL Bow Thruster Manual The (often branded under