M A E D A Mini-Crawler Crane Section 4 – WARM-UP
9/2020 MC285CB-3 4-27
WARM-UP
WARNING! Unsafe Operation Hazard. In the
event of a problem while performing the
warm-up procedure, immediately turn the
Starter Switch to the OFF position to stop
power to the electrical system. Remove the
key from the Starter Switch. Be sure to
correct the problem before operating the
machine.
NOTICE: Once the machine starts, check the
monitor to ensure no errors are displayed.
Perform the following warm-up operation after
the machine has started. If any problems are
found during warm-up operation procedures,
repair as necessary before continuing operation.
1. Push in the travel lever while unlocking the l
ever to enable operation of the outriggers
and the crane.
Fig. 4-59
2. Set the outriggers. See “OUTRIGGER
SETTING” on page 4-43.
3. Loosen the wire rope which has been
locking the hook block before disengaging
the hook block from its hanger. See “Before
Crane Operation” on page 4-61.
4. Use the motor speed adjuster switch on the
monitor to increment the display to the
halfway position, and run the motor at
medium speed.
Fig. 4-60
5. Slowly operate the boom derrick lever back
and forth so that the derrick cylinder
extends and retracts to its stroke end to
check that its function is normal. If not,
correct it as necessary.
Fig. 4-61
6. Slowly operate the boom telescope cylinder
back and forth so that the boom extends or
retracts to its stroke end to check that its
function is normal. If not, correct it as
necessary.
Fig. 4-62
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