Manitowoc National Crane 800D, Operator'S And Service Manual

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OPERATION 800D
2-26
Published 5-27-2018 Control # 039-06
The RCL or (optional) Hydraulic Capacity Alert Systems are intended to be used as aids to prevent most
overload conditions.
Do not use the RCL or (optional) Hydraulic Capacity Alert System as substitutes
for safe operating practices as outlined in the “ Safety Information ” section of this manual.
Do not expect the RCL or (optional) Hydraulic Capacity Alert System to detect all possible overload
conditions.
They will not prevent structural or stability overloads to the crane or winch caused by:
1. Freely swinging loads or operating in an out-of-level condition which will result in excessive side loading.
2. Side loading due to pulling sideways on the boom with boom rotation or load hoist. Load must always be
directly under boom tip.
3. Sudden load movements from erratic operation of the crane functions which will result in excessive shock
loading.
4. Improper loadline reeving for loads larger than single line pull capacity.
5. Extending the boom without first paying out the loadline which can result in deadheading (two blocking)
the loadline against the boom tip.
6. Loads in excess of capacity when operating with a jib deployed.
7. Loads with lift cylinder fully retracted.
8. Excessive induced loading during auger system operation.
9. Operation without outriggers and stabilizers fully deployed or inadequate footing for the outriggers and
stabilizers.
Note: The 800D must have an RCL system if equipped with jib or personnel platform
options.
JIB OPERATIONS
The Capacity Alert System does not provide accurate indication of overload
conditions when operating with a jib deployed. Reliance upon the system to warn of
overload with the jib deployed
(or other excepted overload conditions) can result in
structural damage, instability, injury and death. The operator must always know the
weight of the load to be lifted, insure that the loadline reeving is correct for the size
of the load, and operate the machine within its rated capacity in a safe, smooth
manner according to the instructions outlined in the “
JIB Safety and Operation ”
section of this manual
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