MANTA 700

Common issues

• Brake band/lining wear reducing holding capacity below rated load
• Gearbox oil leaks or contamination
• Wear grooves or scoring on the rope/warping drum surface
• Motor or hydraulic overload trips from mooring line overload or a seized drum bearing
• Corrosion of deck mounting bolts and base in exposed weather locations
• Faults in the local/remote control system

Inspection checklist

• Function-test under load (no-load, and rated load where practicable) at the planned maintenance interval
• Check brake holding capacity and adjustment
• Check gearbox oil level and condition
• Check mounting bolts and base for corrosion or looseness
• Check electrical/hydraulic control functions including emergency stop
• Visual check of the drum/warping surface for wear, cracks, or sharp edges that could damage mooring lines
• Test overload protection trip function

Service intervals

Critical spares

• Brake linings/pads
• Gearbox oil seals
• Motor or hydraulic motor spares
• Drum bearings
• Control station components (push-buttons, limit switches)

Safety

• Crush and entanglement hazard at the rotating drum and rope - keep hands and loose clothing clear and follow proper mooring line handling procedures
• Snap-back zones exist if a rope or wire fails under tension - this must be covered in the mooring safety briefing
• Electrical or hydraulic isolation is required before maintenance work on the unit
• Brake failure under load is a major hazard - never exceed the rated line pull/SWL

Class survey

Class periodical surveys of mooring/anchor handling equipment check safe working load marking, brake holding performance, and general mechanical condition; SWL and test certificates for the capstan should be retained onboard and cross-checked at survey.