Tadano TT-800XXL1, Service Manual

Page: 238 / 267

Y-4 Y-4
Check (Crane Operation)
12
WY04-05 1 0E
6. Alarms
Item
Type of
alarm
Sound Checking procedure
O/R switch
non-neutral position
alarm
Electric
buzzer
• 2300Hz
• continous
Piiii
• Buzzer sounds ten seconds later if either Ext./Ret.
selection switch or Jack/Slide selection switch is actuated
and none of O/R button is operated.
• When any O/R button is operated within ten seconds,
buzzer sounds again after counting ten seconds.
Moment limit detected
by AML Electric
buzzer
• 280Hz
• continous
buzz
Raise the moment to 1 00% while the AML is activated
(Intermittent sound is output when the moment exceeds
90%)
Two-block alarm
Electric
buzzer
• 2300Hz
• continous
ding-dong
Activate the two-block detector switch for each main winch
and auxiliary winch by hoisting up the corresponding winch.
Front jack overload
alarm
Horn • 4 1 5Hz
Making the internal pressure for the front jack extension
circuit
1 8.6MPa [3500psi (245kgf/cm
2
)].
(Checking this alarm is not necessary because it is output
only when the front jack is overloaded.)
A.
Swing brake lever
position detection
buzzer
Actuate the P.T.O., and turn OFF the swing brake switch
(on right side of AML) to put into the state that the crane
can be operated.
1 . Disconnect the connector of the accumulator pressure
detection switch.
2. Operate the swing brake lever to confirm that
• Buzzer sounds if the lever in the dolly side, and
• Buzzer dose not sound if the lever in the crane side.
Crane side
Dolly side Swing brake lever
Proximity switch
Cab
IWY04-05 1 0E04
D
ol
ly
bu
zzer
B.
Swing brake
accumulator low
pressure warning
buzzer
Electric
buzzer • Intermittent
Puu···· Puu···
3. Reconnect the connector of step 1 after confirming the
step 2.
Adjust the lever in the above figure to the crane side,
and disconnect the connector of proximity swtch.
(Buzzer will not sound because the pressure of
accumulator is high.)
4. Turn ON the swing brake switch. Confirm the
accumulator pressure becomes low, and the buzzer
sounds.
5. Turn OFF the swing brake switch, and confirm the
buzzer stops sounding one minute later.
6. Reconnect the connector of step 3.