Owner's Manual for Thern DW1M1-S4 Capstan
page 8
SA9895A-0316
2.1
General Theory of Operation
2.1.1
THE PULL REQUIRED to move the load must not exceed the load rating of
the unit. Consider the total force required to move the load, not the weight of
the load.
2.1.2
THIS EQUIPMENT CAN develop forces that will exceed the load rating.
It is the responsibility of the equipment user to limit the size of the load.
Inspect the equipment regularly for damage according to the instructions
contained in this manual and in the component manufacturer’s information.
2.1.3
THIS HOIST CONTAINS A LOAD BRAKE IN ADDITION TO
HELICAL-WORM GEARING TO HOLD THE LOAD IN PLACE.
2.1.4
PERFORMANCE RATINGS of the equipment are affected by the amount
of synthetic fiber rope wound on the drum, the way in which it is wound, the
way the unit is used, and tension on the dead end of the rope.
a
LOAD RATING represents the maximum pull that can be placed on new
equipment.
2.1.5
DUTY RATINGS refer to the type of use the equipment is subject to.
Consider the following when determining duty rating.
a
ENVIRONMENT: harsh environments include hot, cold, dirty, wet,
corrosive, or explosive surroundings.
Protect the equipment from harsh
environments when possible.
b
MAINTENANCE: poor maintenance, meaning poor cleaning, lubrication,
or inspection, leads to poor operation and possible damage of the equipment.
Minimize poor maintenance by carefully following the instructions
contained in this manual.
c
LOADING: severe loading includes shock loading and moving loads that
exceed the load rating of the equipment.
Avoid shock loads, and do not
exceed the load rating of the equipment.
d
FREQUENCY OF OPERATION: frequent start and stop functions increase
wear and shorten the life span of the gear train and load brake components.
Lengthy operations cause lubrication to become hot, which also decreases
the life span of the gear train.
Increase maintenance of the equipment if
used in frequent operations.
CONTACT THE FACTORY FOR MORE INFORMATION.
Important!
• Limit nonuniform winding by
keeping tension on the synthetic
fiber rope.
• To help insure rated performance,
make sure voltage at the motor is
equal to the motor’s voltage rating.
• It is your responsibility to detect
and account for different factors
affecting the condition and
performance of the equipment.
