Zoomlion QY30V, Manual

Page: 113 / 276

04-18 04-18
Operation – crane superstructure Operation – crane superstructure
rope pulley. When the distance detected between the hook block and the pulley is less rope pulley. When the distance detected between the hook block and the pulley is less
than the safety one, the hoisting limit switch is triggered and the dangerous crane than the safety one, the hoisting limit switch is triggered and the dangerous crane
movements “Spool up winches”, “Derrick main boom down” and “Telescope boom out” movements “Spool up winches”, “Derrick main boom down” and “Telescope boom out”
are switched off automatically and acoustic warning will be sent. At this time, only the are switched off automatically and acoustic warning will be sent. At this time, only the
crane movements “Reel off winches”, “Derrick main boom up” a crane movements “Reel off winches”, “Derrick main boom up” and “T nd “Telescope boom in” elescope boom in”
can be switched on. See Fig. 04 – 09. can be switched on. See Fig. 04 – 09.
Fig. 04 – 09 Fig. 04 – 09
Press the bypassing “hoist up” switch on the Press the bypassing “hoist up” switch on the left control box to bypass the left control box to bypass the switch-off. switch-off.
Ne Never use the byp ver use the bypassing “ assing “ hoist up” hoist up” switch in no switch in no rmal oper rmal operation! ation!
Connection and installation of hoisting limit switches on jib and rooster sheave are as Connection and installation of hoisting limit switches on jib and rooster sheave are as
follows: follows:
a) a) Wh When en th the e ji jib b is is us used ed, , re remo move ve the the by bypa pass ss av avia iati tion on so sock cket et on on th the e po posi siti tion on “ “ ” ” of of
the terminal box and install aviation socket which is connected to the hoisting limit the terminal box and install aviation socket which is connected to the hoisting limit
switch on the auxiliary winch into the terminal box. And then connect the plug on switch on the auxiliary winch into the terminal box. And then connect the plug on
the jib to the socket on the boom head. See Fig. 04 – 10. the jib to the socket on the boom head. See Fig. 04 – 10.
Warning Warning
Hoisting Hoisting
limit
limit
switch
switch
weight
weight
Hoisting Hoisting
limit
limit
switch
switch
weight
weight
Hoisting Hoisting
limit
limit
switch
switch
weight
weight
Dangerous operation Dangerous operation
(Be switched off)
(Be switched off)
Bypassed (Return Bypassed (Return
to safe operation) to safe operation)