Lewmar C10 Capstan, Owners Installation, Operation & Servicing Manual

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Lewmar C10/12 Capstan Manual ref B10407 iss.1
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5
5- Hydraulic system
5.1 Installation
Capstan unit should be connected to a hydraulic powerpack with directional control valve installed
to control the capstan movement.
A typical hydraulic circuit is shown below
5.2 C10/12 Hydraulic motor/gearbox
The hydraulic motor/gearbox consists of a high torque hydraulic motor fitted to an in line gearbox
with brake.
Refer to section 5.3 for flows and pressures information.
The motor gearbox is self sustaining.
5.6 Motor ports & drain
The Lewmar hydraulic motor ports are:
A & B ports ½” BSP.
Drain port is ¼”BSP.
Note:
• A drain line is required
• The minimum bore diameter of the drain line
required is 10mm ( 3 /
8
”).
• Safe working pressure: 10 bar.
• Tubing material: Oil compatible semi-rigid
plastic tube braided hose or steel pipe. Hydraulic installation schematic
5.3 Pressures and Flow rates
MODEL NORMAL PRESSURE FLOW RATE
bar psi
l/min US gal/min
C10 (200 cc/rev) 175 2573 20–55 5.2–14.3
C12 (250 cc/rev) 13.5:1 G/Box 155 2279 30–80 7.8–20.8
5.4 Hose types
For reliable operation and safety it is essential
to use reinforced braid hose for connecting
to the motor A and B ports which conforms to
SAE100R2A or DIN 20 021 Part 2.
The recommended hose sizes are:
• Up to 30 l/min +
1 /
2
” (13mm) bore diameter.
• Up to 50 l/min +
5
/
8
” (16mm) bore diameter.
• Up to 70 l/min + 3 /
4
” (19mm) bore diameter.
• Up to 130 l/min + 1” (24mm) bore diameter.
Ref: 3.78 litres = 1 US gallon
4.54 litres = 1 Imperial gallon
5.5 Recommended Oil
Lewmar recommends Mineral based non-foaming,
anti-wear, water tolerant 32 centistokes at 40°C to
ISO32
GB