WARN 30XL Series - Manual (Page 7)

7
WARN Industrial Winches
Hydraulic Winches: General Information
NOTE: The hydraulic system diagram and
component descriptions are provided for general
reference. Consult a knowledgeable hydraulics
representative for specific recommendations on
component selection, interconnection, layout,
and best practice.
The pressure rating of the winch motor is
determined by (a) the maximum allowable
pressure at the motor inlet port and (b) the
maximum allowable pressure drop across the
motor. Pressure drop is defined as the difference
between the inlet port pressure and the outlet
port pressure at the winch motor. Exceeding the
maximum inlet pressure may damage the winch
motor. Exceeding the maximum pressure drop
may cause failure of winch components.
The recommended operating temperature range
of the hydraulic motor is 100°F to 150°F (38°C to
66°C). The maximum operating temperature
range is -6°F to 180°F (-21°C to 82°C). Do NOT
exceed the flow rating of the hydraulic motor.
See the product data sheet for specific hydraulic
specifications.
WARNING
Failure to observe these instructions could
lead to property damage, severe injury, or
death
• Never exceed the maximum recommended
hydraulic pressure or flow for any of the
components used.
• Never use a relief valve that exceeds the
hydraulic motor pressure rating. Use of the
incorrect relief valve can overload the winch
or cause hose or fitting failure.
• Always use an open-center type control
valve (A & B work ports drain to tank) to
ensure proper brake operation.
• Always make sure all hydraulic system
components are functioning correctly.
HYDRAULIC FLUID: The hydraulic fluid used
with the winch must be an extreme pressure,
anti-wear hydraulic oil with oxidation and
corrosion inhibitors. It must contain a foam
suppressant, and have a viscosity rating of 100-
300 SUS at 60°F to 115°F (15°C to 46°C). The
recommended nominal filtration level is 10
microns or finer.