Product Manual

- 01 -
Description
Unpacking
Installing the Crane
Safe Warnings and Precautions
Davit cranes are perfect for permanent or portable installation.
These cranes consist of an angled beam which pivots over a
vertical axis. They can have fixed or adjustable booms, and
are available in portable as well as stationary units. Davit
cranes incorporate a hand operated and cable assembly for
load handling. Independent bases (Optional-Sold Separately)
allow you to move the davit crane from base to base, so one
davit crane can serve more than one lift station. Standard davit
cranes feature an electrostatic powder coating to resist
corrosion. Galvanized and stainless steel models provide added
protection in harsh environments.
Davit Cranes Series 500 lb, 1,000 lb and 2,000 lb
Hand or power winch operation up to 2000 lb capacity
• Hand winch operated models include spur gear or worm
gear hand winch with automatic disc brake for load
control.
• The worm gear hand winch can be power driven with a
maximum 400 rpm drill-motor. Not available for 500 LB
series cranes.
• Corrosion resistant finish with electrostatic powder
coating and corrosion resistant fasteners. Galvanized
finish also available,
• Adjustable booms provide different height and reach
combinations for various size load
s.
• Crane rotates 360° on a pin and fitting bush in the
base.
• Stainless steel models for long service life in corrosive
environments, with stainless steel hand winch.
• Bases in Pedestal and Socket style.
After unpacking the crane, inspect carefully for any damage
that may have occurred during transit. Check for missing or
damaged parts. Shipping damage claims must be filed with
carrier.
When using this crane, safety precautions should always be
followed to reduce the risk of personal injury and damage to
the crane.
1) Read and follow the guidelines set forth in this owner’s
manual. Keep the manual, and all decals adhered to the crane
at all times.
2) Inspect
all components of the crane according to owner’s
manual before operation.
3) Operators must be well trained in operating this crane, and
should be properly dressed (hard hat, safety shoes and safety
glasses, no loose clothing).
4) Operators must know the load and the load must not excee d
the crane rated capacity.
5) The load must be clear of other objects and free to move.
Make sure the load will not tip, spin, roll away, or in any
way move uncontrollably.
6) Adjust the boom to proper position so that the load hook is
centered over the load. Avoid side pulls which could damage
the crane or cause the load to tip. Fig.1
7) When adjusting the boom, set the boom angle a bit above
horizontal and hold telescopic boom weldment firmly to
8) Keep at least 5 wraps of wire rope wound on the drum of
the winch at all times
, to serv
e as anchor wraps. With less
than 5 wraps on the drum the wire rope could come loose,
causing the load to fall off.
9) Keep hands away from sheaves, gears, wire rope, and other
moving parts of the equipment.
10) Keep all unnecessary personnel away from the crane while
in operation. Keep out of the path of the load.
11) Do not lift people. The crane is not designed for lifting
people.
12) Stay Alert: Watch what you are doing. Use your common
sense. Do not use this crane when you are tired, stressed or
when under the influence of drugs, alcohol or medication.
• A qualified professional should inspect or design the
foundation to insure that it will provide adequate support.
• Locate the cra
ne so it will be visible during the entire
operation.
1) CONSULT APPLICABLE CODES AND REGULATIONS for specific
rules on installing the equipment.
2) Locate the crane in an area clear of traffic and obstacles that
could interfere with operation. Make sure the crane is
accessible for maintenance and operation.
3) Install the crane on a level surface. An unlevel surface may
cause the boom to rotate in the direction the mast is leaning.
4) Fasten the base securely to the foundation to withstand
applicable overturning moments and mounting bolt reaction.
See Table 1. For standard products referred to in this manual,
use 3/8 inch or 5/8 inch coarse thread fasteners, grade 5 or
better. Torque for 3/8 inch grade 5 fasteners without
lubri
cation is 30 ft lbs , Torque for 5/8 inch grade 5 fasteners
without lubrication is 150 ft lbs. Make sure mounting holes
are secured to a solid foundation able to support the crane
and the load under all conditions with design factors based
on accepted engineering practices.
Table 1-Crane Reactions
Model
Master Moment
N.m
Suggested
Bolt Size
Axial Force
pedestal
base only
Torgue for grade 8.8
fasteners without
lubrication
in-lb N.m Lb N N.m
E500
21000 2373 M10 2121 9435 40
E1000
36000 4068 M16
1756
7811 200
E2000
91200 10306 M16
4447
19781 200
Force in tension
Crane at 45
°
Figure 1
center line
correct
center line
incorrect
avoid it from sliding out of upper bracket weldment causing
damage or injury.