Grove Published 02-21-2019, Control # 611-05 3-97
TMS9000-2 OPERATOR MANUAL OPERATING CONTROLS AND INDICATORS
The cylinders are only considered unlocked (able to be
raised/lowered freely) at +4.0 or -4.0 degrees. When lowered
at that position the crane is then slewed to 0.0 degrees
where they are raised to lift the counterweight. To unload the
counterweight the reverse happens: crane is slewed to 0.0
degrees, cylinders extend to lower counterweight onto the
deck, crane slews with cylinders extended to +4.0 or -4.0
degrees, cylinders raise without counterweight.
Locking/unlocking the counterweight
With the lifting cylinders extended:
Extending/retracting the lifting cylinders
With the turntable locked prior to raising the counterweight.
Pre-tensioning pressure display
For driving the counterweights should be pinned. For lifts on
the job site it is not necessary to pin them. The cylinder
pressure may be used to keep them up. The cylinders have a
check valve and accumulator which will hold pressure on for
several hours. There is no indication to the operator if the
cylinders drift down, but the accumulator automatically
charges to keep the pressure high - about 190 bar (2756
psi).
Main hoist
Refer to Main hoist, page 4-55 for information on operating
the main hoist.
To unlock: Select symbol 5 (Figure 3-121)
To lock: Select symbol 6
The movement stops after the button is released, or when
an end position is reached.
1 Retract:
After reaching the end position the
counterweight is pre-tensioned
(Figure 3-122)
2 Extend
The movement stops after the button is released, or when
an end position is reached.
1 Green:
Pre-tensioning pressure reached
(Figure 3-123)
2 Red:
Pre-tensioning pressure too low – pre-
tension counterweight