Manitowoc Grove GRT8100 User Manual

SET-UP AND INSTALLATION GRT8100 OPERATOR MANUAL
4-4 Published 3-25-2020, Control # 595-10
Unlocking
NOTE: Always remove the switch lock (enable) before
installing an A2B weight around the hoist rope.
1. (A) Pull down lanyard (2) and remove cap (1). Switch is
unlocked (enabled).
2. (B) Install cap (1) on A2B switch.
Checking Before Operation
Check the following electrical connections before operating
the crane to ensure the RCL system is properly connected
for the crane configuration.
Cranes with Main Hoist Only
If the crane is operated only with the boom and without boom
extension or lattice insert, no additional connections are
necessary. It must however be ensured that the A2B switch
weight is correctly mounted on the main boom hoist rope.
With even numbers of rope lines, the lifting limit switch
weight shall be attached to the “dead end” of the hoist rope.
With odd numbers of rope lines, the lifting limit switch weight
shall be attached to the rope line with the lowest operating
speed.
If the crane is operated with a main boom extension or top
section, the connecting cable must be mounted between the
distributor socket on the extension or insert, and the
distributor socket on the main boom. The main boom A2B
switch weight must be disconnected and mounted on the
extension or fly section A2B switch.
Machines with Main and Auxiliary Hoists
If the main boom extension or fly section is not used, then the
bridging plug must be plugged into the distributor socket on
the main boom and the lifting limit switch weight must be
mounted on the main boom.
If the crane is operated with a main boom extension and/or
with a lattice insert, then the connecting cable must be
mounted between the distributor socket on the extension or
on the top section and the distributor socket on the main
boom. In addition, weights must be fitted to both the A2B
switch of the main boom and the extension or fly section.
If the boom extension or lattice insert are in working position
and if the main boom is not equipped with a hoist rope, then
the weight of the A2B switch on the main boom must be
removed to prevent endangering personnel or damaging
equipment.
After electrical connections have been checked to ensure
the system is properly connected for the respective crane
configuration, the following checks must be made:
1. Check electrical wiring connecting various parts of the
system for physical damage.
2. Check A2B switches and weights for free movement.
3. Inspect spring cable drum for smooth running, initial
drum tension, and correct cable winding.
4. Inspect mechanical and electrical installation of power
measurement sockets on the lattice insert (if present).
FIGURE 4-5
8684-2
WARNING
Failure to reposition the A2B weight will prevent the A2B
system from functioning properly. No weight shall be
mounted on the A2B switch of the main boom when
working with the extension/top section.
WARNING
The following tests must be performed with care to
prevent personnel injury or crane damage. Proper
functioning of the CCS requires successful completion of
these tests before starting work.
If the operator cannot see the hook block approaching the
pulley head, this task must be assigned to an assistant
(slinger).
The crane operator must be prepared to stop the crane
immediately if the CCS is not working correctly, i.e. when
warning indicators do not display, the acoustic alarm does
not sound, and crane movements such as raising,
extending and luffing are not disabled.

Manitowoc Grove GRT8100 Specifications

General

Brand	Manitowoc
Model	Grove GRT8100
Category	Construction Equipment
Language	English