Maeda CC1908S-1 - 2 Nd-Speed Hoisting and Lowering; Hoisting Operation with Hook Stowage Lever

M A E D A Crawler Crane 5.4 CRANE OPERATION
5/2020 CC1908S-1 5-31
5.4.5.2 2ND-SPEED HOISTING AND
LOWERING
WARNING
• Winch using 2nd speed only when there is
no load and no load is being hoisted.
Winching using 2nd speed with a hoisted
load may cause serious personal injury due
to machine toppling, damage, or dropping
of the load.
• If the actual load display is 0.5 t or more
when winching using 2nd speed, the speed
will automatically be switched to 1st speed.
The speed will automatically revert to 2nd
speed when the load reduces to 0.25 t or
less, but operation should be stopped first,
as there is a risk of serious personal injury
due to machine toppling, breakage, or
dropping of the load.
Operate the winch 1st speed/2nd speed selector
switch on the left-hand control lever.
• 1st speed: The winch speed switches to 1st
speed. ① is displayed on the winch
section of the monitor.
• 2nd speed: The winch speed switches to 2nd
speed. ② is displayed on the winch
section of the monitor.
 If the actual load on the moment limiter is 0.5
t or more, 2nd speed hoisting cannot be
selected even when the winch 1st speed/2nd
speed selector switch is pressed.
 When "Single fall" or "2 falls" is selected for
the number of falls on the moment limiter,
2nd speed hoisting cannot be selected even
when the winch 1st speed/2nd speed
selector switch is pressed.
5.4.5.3 HOISTING OPERATION WITH
HOOK STOWAGE LEVER
WARNING
• The hook stowage lever cancels the
automatic stop function of the overwinding
prevention device.
• Use the hook stowage lever only for simple
stowage of the hook block in the boom tip.
Slide down the hook stowage lever on the right-
hand control lever.
 The working status lamp illuminates in red
while winding up using this lever.
 Loads cannot be raised by operating the
winch using this lever, but this is not a fault.