© Nov. 2022 6-14 GTZZ15J Operation Manual
PRE-OPERATION FUNCTION TEST
TESTING THE TILT
PROTECTION SYSTEM
Figure 6-4
1. Start the machine.
2. With the machine in non-operating position, flip the
level switch to exceed 5°in X (left-to-right)/Y (front-
to-back) direction.
3. The tilt alarm sounds and the chassis tilt indicator
light flashes, with no function restricted.
4. With the machine in operating position, flip the level
switch to exceed 5°in X (left-to-right)/Y (front-to-
back) direction.
5. The tilt alarm sounds with the chassis tilt indicator
light flashing, some functions are restricted, but the
boom retracting, turntable rotating and boom
lowering are allowed.
6. Place two wooden blocks under the two wheels on
the left or right side of the machine. The wooden
block should be 750×250×170mm
(2.46×0.82×0.56ft) in size (L×W×H). With the
machine in non-operating position, drive it onto the
two wooden blocks.
7. The tilt alarm sounds and the chassis tilt indicator
light flashes, with no function restricted.
8. Drive the machine off and remove the wooden
blocks.
9. Place two wooden blocks under the two wheels on
the front or rear of the machine. The wooden block
should be 750×250×177mm (2.46×0.82×0.58ft) in
size (L×W×H). With the machine in operating
position, drive it onto the two wooden blocks.
10. The tilt alarm should sound with the chassis tilt
indicator light flashing, some functions are
restricted, but the boom retracting, turntable
rotating and boom lowering are allowed.
11. Drive off the machine in non-operating position and
remove the wooden blocks.
TESTING THE WEIGHING
SYSTEM
Before the test, fully raise and lower the boom and
retract and extend the boom at least twice to ensure the
pulley and track are adequately lubricated.
Table 6-5
MODEL TEST RESULTS
GTZZ15J
When the load does not exceed 250kg (551 lb), ensure that the platform is able to rise to the
highest position.
With the boom in non-operating position: When the load exceeds 250kg (551 lb), the buzzer
will sound continuously, the overload indicator light will flash, the display screen will indicate
platform overload, drive, boom rising and extending functions are restricted and will not resume
until the excessive load is removed. With the boom in operating position (GB): When the load
exceeds 250kg (551 lb), the buzzer will sound continuously, the overload indicator light will
flash, the display screen will indicate platform overload, some functions will be restricted, but
boom retracting, turntable rotating and boom lowering are allowed. Those restricted functions
will not resume until the excessive load is removed.
With the boom in operating position (except GB): When the load exceeds 250kg (551 lb), the
buzzer will sound continuously, the overload indicator light will flash, the display screen will
indicate platform overload, all functions are restricted and will not resume until the excessive
load is removed.
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