SECTION
DATE
SUPERSEDES
TITLE
ET6/8/10/12K(X)
C200
01-15-15F
12-26-13E
INSTALLATION DWG
900530B
CRANE OPERATION AND MAINTENANCE INSTRUCTIONS
CONTROL FUNCTIONS
WINCH UP and WINCH DOWN - Raises and lowers the load with the wire rope.
POWER EXTENSION - "Up" raises the boom elevation by operating the valves and the electric
hydraulic power unit. "DOWN" operates a solenoid release valve mounted on the cylinder to
lower the load and/or boom by gravity at a controlled rate. A check valve on the cylinder prevents
the boom from coming down if a hose breaks. A flow control valve controls the lowering rate.
POWER ROTATION - "L" and "R" control the direction of rotation. The ET6K, ET8K(X),
ET10K(X) or ET12K(X) can be rotated continuously thru 360° or more. There are no restrictions
on the number of rotations in any direction.
CONTROL PRIORITY SYSTEM - As a built in safety feature, the operator can perform only one
major and one minor function at any one time. Major functions include rotation, winching up of a
load, and elevating, extending, and retracting the boom. Minor functions include winching down
and lowering the boom.
a. "WINCH UP" has priority over "BOOM UP", "BOOM OUT", "BOOM IN", and "ROTATION."
b. "BOOM UP" has priority over "BOOM OUT", "BOOM IN", and "ROTATION."
c. "BOOM OUT" and "BOOM IN" have priority over "ROTATION."
d. "BOOM DOWN" and "WINCH DOWN" can be operated with any function.
CRANE OPERATION
Avoid rapid reversal of the winch and rotation control switches. The high inrush current to the
motors during reversal can reduce the life of the contactors, motor brushes, and commutators.
When operating "WINCH UP", "BOOM DOWN", or "BOOM OUT," always maintain clearance
between the boom head and the load block or hook.
Do not lift or drag a load sideways using any of the crane funcitons. The boom has much lower
bending strength sideways than in a vertical direction.
®
VENCO VENTURO INDUSTRIES LLC
CINCINNATI, OHIO
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