Maeda MC305C-3 - Slewing Operation; Boom Telescoping Operation

M A E D A Mini-Crawler Crane Section 4 – REMOTE CONTROL OPERATION
3/2019 MC305C-3 4-111
4. Then turn ON the Main switch of the
Receiver.
Fig. 4-333
NOTICE: When the main switch of the Receiver
is turned ON, the abnormal signal detector
circuit works for 3 to 4 seconds. During this
moment, the Crane is not ready for operations.
NOTICE: Four of the Crane operation levers are
provided. Each controls the following operation,
respectively. (See the figure.)
Fig. 4-334
(1): Slewing (upper: counterclockwise (left),
lower: clockwise (right))
(2): Boom telescoping (upper: extend, lower:
retract)
(3): Hook raising and lowering (upper: raising,
lower: lowering)
(4): Boom lift (upper: raising, lower: lowering)
Slewing Operation
WARNING! At the slewing operation, actuate
the Accelerator lever carefully and always
keep in low speed.
Also, actuate the Accelerator lever slowly
and delicately to avoide abrupt slewing.
Such abrupt acceleration or deceleration
especially while a load is hung will make a
large impact to the Crane and may result a
serious hazard such as Crane tipping or
damage.
Fig. 4-335
Slew Clockwise (Right)
Push the Slewing/No.1 outrigger operation lever
to "Clockwise (lower)", then pull the Accelerator
lever slowly.
The boom slews clockwise (right), provided that
you look down the Crane from the sky.
Slew Counterclockwise (Left)
Push the Slewing/No.1 outrigger operation lever
to "Counterclockwise (upper)", then pull the
Accelerator lever slowly.
The boom slews counterclockwise (left),
provided that you look down the Crane from the
sky.
Stop Slewing
Release the Accelerator lever slowly, then
release the Slewing/No.1 outrigger operation
lever to return it to its neutral position.
The boom stops slewing.
Boom Telescoping Operation
Fig. 4-336
Boom "Extending"
Push the Boom telescoping/No.2 outrigger
operation lever to "Extend (upper)", then pull the
Accelerator lever slowly.
The boom extends.
Boom "Retracting"
Push the Boom telescoping/No.2 outrigger
operation lever to "Retract (lower)", then pull the
Accelerator lever slowly.
The boom retracts.