Grove Published 3-25-2020, Control # 595-10 4-5
GRT8100 OPERATOR MANUAL SET-UP AND INSTALLATION
Check Hoist limit switch warning light and acoustic alarm as
follows:
1. Manually raise weight fitted on the A2B switch. As soon
as weight is raised, the acoustic alarm should sound and
A2B switch warning should display.
2. Using the main hoist, pull hook block slowly against the
A2B switch weight. As soon as the hook block raises the
weight, the acoustic alarm should be triggered, the A2B
switch warning should display, and the main hoist should
switch off. Lower the hook block slightly to eliminate this
condition.
3. Slowly lower the boom to bring about a potential hoist
limit situation. As soon as the hook block raises the
weight, the acoustic alarm should sound, the A2B switch
warning should display, and the luffing gear should
switch off. Lower the hook block slightly to eliminate this
condition.
4. Slowly extend (telescope out) the boom to bring about a
potential hoist limit situation. As soon as the hook block
raises the weight, the acoustic alarm should sound, the
A2B switch warning should display, and the telescoping
function should switch off. Lower the hook block slightly
to eliminate this condition.
5. If crane is equipped with a boom extension or lattice
insert, the inspection procedure must be repeated for
the A2B switch of the extension/top section.
6. Verify display of main boom length agrees with actual
boom length.
7. Verify display of main boom angle agrees with actual
boom angles.
8. Verify display of the crane operating radius agrees with
the actual radius.
9. Verify load display by lifting a load of known weight.
Load display accuracy must be within the tolerance
range.
HOIST ROPE REEVING
NOTE: 35 x 7 (rotation resistant) wire rope is used on this
crane.
Within load and range chart limits and permissible line pull,
multi-part lines allow the operator to raise a greater load than
can be raised with a single part line. Various hoist rope
reeving (part line) is possible with the boom nose and hook
block (Figure 4-6 and Figure 4-11). Reeving should be done
by a qualified rigger using standard rigging procedures.
To quick reeve the hook block without removing the wedge
socket on end of hoist rope, remove the retaining clips from
the two pins (1, Figure 4-6), then drop the two rope guards
(2) to their lowered position.
WARNING
If warning indicators and audible alarm do not function as
described and crane movements are not switched off, the
system is not working properly. The malfunction must be
corrected before starting work.
FIGURE 4-6
Item Description
1Pin
2 Rope Guard
1
1
2
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