Unic URW295CR User manual

ＭＡＩＮＴＥＮＡＮＣＥ ＭＡＮＵＡＬ
ＦＵＲＵＫＡＷＡ ＵＮＩＣ ＣＯＲＰＯＲＡＴＩＯＮ
URW295CR

１． Dimensionsandweightofcranebody （１−１）
２． Descriptionofcarrierequipment （２−１）
３． Descriptionofcraneequipment （３−１）
４． Majorspecifications （４−１）
５． RatedRoadChart （５−１）
６． Attention
１ Inspectionbeforecraneoperation （６−１）
２ Emergencystopswitch
３ Shock-lessfunction （６−２）
４ Interlockingbalancecontrolfunction
７． Modechange
１ Manualmode （７−１）
２ Radiocontrolmode
３ Switchingofmodeindicator
４ Switchingof"shockless"function （７−２）
５ Switchingof low-temperatureoperationmode
６ Resettingofinterlockingbalancecontrol （７−３）
７ Switchingofoutriggerradiocontorolmode
８ Methodofenginestartandstopthatusesradiocontroller （７−４）
８． Controlbox
１ Internalviewofcontrolbox （８−１）
２ Modeindicatorlightingwhenitisinnormaloperation （８−２)
３ Modeindicatorblinkingwhenitisinwrongoperation （８−３）
４ Modeindicationofeachoperation
５ Errorindication （８−４〜５）
６ Zeropointadjustment （８−６）
（８−７〜８）
（８−９）
（８−１０）
（８−１１）
11Howtocorrectstore ofhook （８−１２）
12Howtocorrectreleaseofhook （８−１３）
13PWMvaluecorrectionprocedure （８−１４）
14 Voicemessagelist （８−１５）
10Howtocorrectenginespeed
Contents
７ Zeropointadjustmentprocedureswhenspool,
differentialtransformer,oracceleratorunithasbeenreplaced
８ Modeindicationwhenzeropointadjustmenthasbeeninfailure
９ Howtocorrectcraneoperationspeed

９． Controlvalve
１ MRV-500controlvalve （９−１）
２ Mainreliefvalve （９−２）
３ Reliefvalveforstoringhook （９−３）
４ Pressurereducingvalve （９−４）
５ Backpressurevalve （９−５）
６ Pressureregulatorvalve （９−６）
７ Valvebody(D,H,T,S) （９−７）
８ Valvebody(Outrigger) （９−８）
９ O-ringfittedonjointingsurfaceofvalvebody （９−９）
10Acceleratorcylinder （９−１０）
11Spoolassembly(typesofD,H,T,S) （９−１１）
１０． Oilflowinthein-outbody
１ Whennooperationiscarriedout （１０−１）
２ Whencraneisbeingoperated （１０−２）
３ Whenunloading （１０−３）
（１０−４）
（１０−５）
（１０−６）
（１０−７）
８ Descriptionofaccelerationcylinderfunction （１０−８）
１１． HydraulicCircuit
１ HydraulicSystem （１１−１）
２ HydraulicCircuitDiagram（controlvalve） （１１−２）
３ Hydrauliccircuitdiagram （１１−３）
１２． Piping
１ Pipingofcontrolvalveforrunning （１２−１）
２ Controlvalvepipingforcrane （１２−２）
３ Outorigachangevalvepiping （１２−３）
４ Constructionofswiveljointandpositionofhouses （１２−４〜５）
５ PipingofColumn （１２−６）
１３． Boom(5-sectionboom)
(1)Simultaneoustelescopingofboom4andboom5 （１３−１）
(2)Boom4,5frontsidesectionindetail （１３−２）
(3)Boom3,4rearsidesectionindetail （１３−３）
(4)Installationproceduresforslideplateandguide （１３−４）
４ Whenhookisbeingwoundupbyhookstoringoperation
５ Whenhookstoringrelief valveisbeingfunctionedbyhookstoringoperation
６ Whenboomup,hookup,boomretraction,andslewingC.W.arefunctioning
７ Whenboomdown,hookdown,boomext,andslewingC.C.W.arefunctioning

１４． Telescopingcylinder
１ 5-SectionBoom(TripleCylinder)Operation
(1)WhenTelescopingCylinder1extends （１４−１）
(2)WhenTelescopingCylinder1retracts （１４−２）
(3)WhenTelescopingCylinder2extends （１４−３）
(4)WhenTelescopingCylinder2retracts （１４−４）
(5)WhenTelescopingCylinder3extends （１４−５）
(6)WhenTelescopingCylinder3retracts （１４−６）
（１４−７）
２ FunctionandWorkingofCushionSeal
(1)FlowofPressureOilWhenRetracting （１４−８）
(2)FlowofPressureOilWhenExtending （１４−９）
３ CauseofTroublesandMeasurestobetaken （１４−１０〜１１）
１５． Derrickcylinder
１ Flowofoil,whenlowering （１５−１）
２ Flowofoil,whenraising （１５−２）
１６． Howtopunch （１６−１）
（１６−２〜３）
１７． Hoistwinch （１７−１）
２ Cautiontobetakenwhenreassemblinghoistwinch （１７−２）
３ CauseofTroublesandMeasurestobeTaken(Hoistwinch) （１７−３）
１８． Hook （１８−１）
１９． Slewing
１ Constructionofslewingreductiongear （１９−１）
（１９−２）
３ Slewingreductiongeardisassemblyprocedures （１９−３〜５）
２０． Turntable
１ TurntableMountingProcedures （２０−１）
（２０−２）
２１． Column （２１−１）
２２． Slipring
１ Constructionofslipringanditsfittingposition （２２−１）
Telescoping/Derrickcylindermeasurestopreventpistonfrombeing
loosened
１ Tighteningtorqueforboltsfasteningcolumnandtighteningorder
１ ConstructionofHoistWinchandbrakeshoeadjustingprocedure
２ Positionofsoftzone,tighteningsequenceofboltsandtighteningtorque
(7)AdjustingProceduresforSelectorValvewithAdjustingBolt
２ ConstructiontobetakenwhenreassemblingSlewingreductiongear

２３． Over windingalarm
１ Functionofoverwindingalarmandproceduresforoperation （２３−１）
２ Boomtopindetail （２３−２）
３ Illustratedwiringdiagram,overwindingalarm （２３−３）
２４． Electriccircuit
１ Systemstructure （２４−１）
２ Electriccircuitdiagram （２４−２，３）
３ Generalview （２４−４〜８）
２５． Structureofemergencystopswitchdisassembledcondition （２５−１）
２６． Correspondenceandcheckmethodattrouble
１ Emergencymeasureswhencranewillnotfunctionatall （２６−１）
２ Howtocontroloutriggerswheninanemergency （２６−２）
（２６−３〜４）
４ Inspectionofderrickcylinder （２６−５）
５ Insupectionprocedureswhencylindersinke （２６−６）
６ Proceduresforcheckingoutriggersforsinking （２６−７）
２７． Boomlengthdetector
１ Howtoinstallanddetachboomlengthdetector （２７−１）
（２７−２〜４）
２８． MentenanceAndInspectionOfCarrier （２８−１〜３）
２９． MaintenanceAndInspectionOfCrane （２９−１〜４）
３０． Refuelingresin （３０−１〜３）
３１． Listofrecommendedlubricant （３１−１〜２）
３ Howtojudgedifferentialtransformerforbreakorshort-circuitofcoil
２ Howtoreplacemaincordforboomlengthdetectorandpotentiometer

１．Dimensions and weight of crane body
The total length 2690 ｍｍ
Tread length
1050 ｍｍ
The total height
1375 ｍｍ
All width 600ｍｍ
（１−１）
Total weight(approx.) 1850kg

２ Descriptionofcarrierequipment
18
29
310
411
512
613
714
Acceleratorlever Locklever
Crawlingmotor Hourmeter
Crawlinglever Chokeknob
Idleroller Hydraulicoiltank
Truckroller Staterswitch
Rubbercrawler Hornswitch
Wheelsprocket Fueltank
（２−１）

３ Descriptionofcraneequipment
112
213
314
415
516
617
7
818
9 19 Anti-rolloverdevice
10 (onlycraneequippedwithdevice)(Option)
11 20
Boom
Column
Frame
Hoistwinch
Craneoperatinglevers
Outriggercontrollevers
Hook
Slewingdevice
Derrickcylinder
Telescopingcylinder
Outrigger
Outriggerselectionswitch
Over-windingalarm
Loadmeter
Warninghorn
Wirerope
Level
Automaticstopforleavingminimumwirerope
Loadindicator
(Withwireroperetainingroller)(Option)
Option
（３−１）

４ Major specifications
２．９３ton×１．４ｍ （With outriggers extended fully）
Maximum lift above groud(Hook) Approx ８．８ｍ
Boom to be extended to: ２．５３ｍ～４．０７５ｍ～５．６１ｍ～７．１３ｍ～８．６５ｍ
Maximum working radius ８．４１ｍ
４０ｍ／min （At 4th layer on the drum）
Hoisting speed of hook １０ｍ／min （At 4th layer on the drum, with 4-part line hooking）
Extending speed of boom ６．１２ｍ／２０sec
Raising speed of boom ０°～７８℃／１１sec
Slewing speed １．５ ｒｐｍ
Slewing range ３６０° （Continuous）
Construction ＩＷＲＣ ６×ＷＳ （２６） Class Ｂ （Breaking load： ４３．２kN）
Diameter1×length ８ｍｍ×５４．０ｍ
Outrigger 2-section for bend and 3-section
Hydraulic Rated pressure Crane：２０．６ＭＰa（２１０ｋｇｆ／ｃ㎡）、Crawl：２１．６ＭＰa（２２０ｋｇｆ／ｃ㎡）
pump Rated discharge Approx.３８ℓ／min
Rated rotation Approx.２０００ｒｐｍ
Hydraulic oil tank capacity ２７ℓ
Equipment and construction
Boom telescoping Boom:5-section,Hexagonal box beam
Telescoped by direct pushing of hydraulic cylinder and by wire rope
Boom derricking Direct pushing by hydraulic cylinder(With hydraulic automatic locking device)
Hoisting Hydraulic motor Axial plunger type
Reduction gears Spur-gear reduction
Brake Automatic mechanical brake
Slewing Hydraulic motor Trochoid type（With hydraulic automatic locking device）
Reduction gears Worm-gear+Spur-gear reduction(Supported by ball bearings)
Brake Worm self-lock
Hydraulic pump Variable delivery piston pump
Hooking capacity ２．９t Number of slinging rope:4
Safety device Hydraulic automatic lock
Automatic stop for overwinding／Overwinding alarm／Load indicator
Load indicator(With angle meter)／Level／Alarm buzzer
Hook safety latch
Interlock for crane-crawl lever and outriggers
Weight Approx.１８５０ｋｇ
Crawling device
Crawling Endless rubber crawler
Crawler １８０×４０×７２ＦＲ
Length of ground contact １０５０ｍｍ
Pressure of ground contact ４８．０ｋＰａ （０．４９ｋｇｆ／ｃ㎡）
Crawling speed Forward/Backward：０～２．３Ｋｍ／ｈ
Hill-climbing ability ２０°
Engine Rated output ９．６ｋＷ／２０００ｒｐｍ （１３ＰＳ／２０００ｒｐｍ）
Crawling Independently driven by hydraulic power
Parking brake Disc brake with hydraulic motor built-in
Starting engine Electric starter
Fuel tank Capacity:7liters
(With hydraulic automatic locking device)（2nd&3rd sections:sequential
actuation,4th&5th sections:simultaneous actuation）
extension.Double acting hydraulic cylinders
with pilot-operated check valves,direct pushing type.
Major specifications （Speed,indicated in the table below is at oil temperature range of 45～
55℃
,
o
p
eratin
g
with noload
,
and at rated
p
um
p
dischar
g
e.
）
Crane capacity(maximum lifting load)
Speed of winding-up(Rope speed)
Hoisting
rope
（４－１）

５．RatedRoadChart
Boomsection １・１＋２
WorkingRadius （ｍ） 1.0 1.4 1.5 1.8 2.0 2.5 3.0 3.5 3.835
RatidRoad 2.9 2.9 2.65 2.25 2.05 1.65 1.3 1.0 0.9
（ｔ） 2.0 2.0 2.0 1.45 1.1 0.65 0.49 0.35 0.25
Boomsection １＋２＋３
WorkingRadius （ｍ） 2.2 2.5 2.9 3.0 3.5 4.0 4.5 5.0 5.37
RatidRoad 1.35 1.35 1.35 1.25 1.0 0.8 0.65 0.52 0.43
（ｔ） 0.8 0.65 0.53 0.5 0.38 0.28 0.22 0.16 0.12
Boomsection １＋２＋３＋４
WorkingRadius （ｍ） 3.4 3.8 4.0 4.5 5.0 5.5 6.0 6.5 6.89
RatidRoad 0.85 0.85 0.75 0.6 0.5 0.42 0.36 0.32 0.27
（ｔ） 0.42 0.34 0.3 0.25 0.19 0.14 0.1 0.08 0.06
Boomsection １＋２＋３＋４＋５
WorkingRadius （ｍ） 3.8 4.1 4.5 5.0 5.5 6.0 6.5 7.0 8.00 8.41
RatidRoad 0.55 0.55 0.45 0.37 0.31 0.27 0.23 0.2 0.15 0.13
（ｔ） 0.35 0.29 0.25 0.2 0.16 0.13 0.1 0.07 0.04 0.03
Caution
●Howboom-sectionsareextended
Boom:1
Allboomsectionsareretracted.
Boom:1+2or2
Boomsection(2)onlyisextended.
Boom:1+2+3or3
Boomsections(2)and(3)areextended.
Boom:1+2+3+4or4
Boomsection(4)isextendedtothemar
k
Boom:1+2+3+4+5or5
Boom-section(2),(3),(4),and(5)arefullyextended.
OutriggerMaxEXT.
OutriggerNotMaxEXT.
OutriggerMaxEXT.
OutriggerNotMaxEXT.
OutriggerMaxEXT.
OutriggerNotMaxEXT.
OutriggerMaxEXT.
OutriggerNotMaxEXT.
■Theratedloadisperformancewhenthecraneisplacedlevelandisbasedonanactualoperatingradius
includingboomdeflectionunderload.Theratedloadisalsobasedonstrengthandstabilityofthecrane.
■Maximumextensionofanoutriggerisaconditioninwhichtheinnerboxisextendedtothemaximumextension
positionandaswinglockpinoftheoutriggerarmisinsertedintothenormalposition.Inotherconditionsthan
theabove,operatewithperformanceofnotmaximumextension.
■Ifanyoneofthefouroutriggersisnotfullyextended,operatewithperformanceofnotmaximumextension.
■Improperset-upoftheoutriggersmaycausethecranetoturnover.Placetheoutriggersonafirmandlevel
surfacewithmaximumextension.Makesure,then,thatlockpinsaresecurelyinserted.
Boom1 Boom4
Boom5
Boom3Boom2
Boom1 Boom2
Boom1 Boom2 Boom
3
Boom1 Boom2 Boom3 Boom
5
Boom1 Boom2 Boom3 Boom
4
Boom5
（５−１）

６．１ Inspection before crane operation
Do not operate the crane for about 2 seconds after starter switch
has been tuened on.
The crane is carrying out the system diagnosis to prevent incorrect operation.
The mode indicator lamp is to be fully lit up for 2 seconds during the
system diagnosis.
If the crane is operated during the system diagnosis, voice message
,“Beep, Service remote control, Service remote control”,sounds and
the crane is turned into inoperable conditions.
In this case, please turn off starter switch. Please operate the crane
after turning on starter switch again and hearing Remote control ready.
After the system diagnosis has been completed, operate the crane
when the voice message “Remote control ready, Remote control ready”
is heard.
６．２ Emergency stop switch
If the crane cannot be operated after the engine has been started, check that emergency stop switch has not been
depressed. Depress emergency stop switch when the crane makes an uncontrolled movement .
All the crane functions stop to be operated.
Emergency stop switch
Depression of switch means the emergency stop is activated.
If the emergency stop switch has been depressed,
depress it again for reset.
Mode indicator lamp blinks [59]
when the emergency stop switch has been depressed .
Mode indicator lamp blinks [58]
when the unloading circuit has been damaged.
State that switch is not pushed
Emergency stop release
State that switch is pushed
Emergency stop operation
Caution
No operation is allowed when resetting the emergency stop switch.
If the emergency stop switch is reset during crane operation, it is very dangerous as the crane may make
an abrupt movement.
Although the engine speed may increase for a short time when the emergency stop switch has been pushed
in again to reset the emergency stop, this is not a fault.
Depression of emergency stop switch allows
the unloading solenoid to magnetize.
Control box Mode indicator lamp
（６－１）

６．３ Shock-less function
In order to preuent a lifted cargo from swinging, it allows the crane to make a
smooth stop when operated through radio remote control.
When making the crane a sudden stop, actuate the “selector switch” controlling
opposite function while the shock-less is functioning.
(Do not pull the speed lever during this operation.)
In order to inactivate the shock-less function, turn ON the “hook winding-down”
switch with the “Mode switch” depressed.
６．４ Interlocking balance control function
This is the function that controls the movement of lever and the engine speed for
every combination of interlocking operation through radio remote control.
Examples listed below are not a fault:
When controlled through radio remote control device, the movement
of lever differs each time of operation or the control lever will not be
shifted to its maximum.
When operation is switched from interlocking to independent, control
speed may become slower than that of the independent operation in itself.
Stop the radio remote control operation once and go back to independent
operation again to return it to the original control speed.
This is a measure preventing its operating speed from making an abrupt
increase when operation is switched from interlocking to independent.
Following gives a serious influence on performance of interlocking operation:
Unspecified hydraulic pump has been mounted.
The rated speed of hydraulic pump has not been set as specified.
Any of control levers has been altered.
Hooking system has been changed.
（６－２）

7.1Manualmode
Radiocontroloperationswitchispushedorifmodeindicatorlamphasdisappeared
bypushingRadiocontrolselectorswitch,themanualoperationispossible.
7.2Radiocontrolmode
Ifthekeyswitchofthetransmitteristurnedon,thestartbuttonispushed,andmodeindicatorlamplights,
theradiocontrollercanbeoperated.
7.3Switchingofmodeindicator(State⇔Operation)
Stateindication Operationindication
(normalcase） Depressbothwinding-upandradiocontrollerselector
switchesatthesametimeorturnOFFpowertocrane
andturnitONagain.
Depressbothwinding-upandradiocontrollerselector
switchessimultaneously.
＋
Modeindicatorlampisturnedoff.
Modeindicatorlampislights.
Keyswitch
Startbutton
Radiocontroloperationswitch
Radiocontroloperationswitch
(7-1)

7.4Switchingof"shockless"function (Carryitoutwhenitisnotover-wound）
"shockless" No"shockless"
(normalcase） “[-]”appearsontheleftsideofmodeindicator.
7.5Switchingof low-temperatureoperationmode
Low-temperature Low-temperature
operationmode operationmodeON
OFF(normalcase） Modeindicatorshows[06].
Voicemessage,“changecontrolmode”isissued.
Depresstheswitchforstoringhookwiththeswitchfor
slewingC.W.turnedON.
Depresstheswitchforstoringhookwiththeswitchfor
slewingC.C.W.turnedON.
TurnONwinding-downswitchwithpara-hookswitch
depressed.
TurnONwinding-upswitchwithpara-hookswitch
depressed.
(7-2)

7.6Resettingofinterlockingbalancecontrol
Retainingfunctionof Retainingfunctionof
dividingoperationON dividingoperationOFF
(normalcase） Depresstheswitchforstoringhookwiththeswitch Modeindicatorshows[oF].
forboom-downturnedON. Voicemessage,“changecontrolmode”isissued.
7.7Switchingofoutriggerradiocontorolmode
TurnON"modeoperationswitch"tooutriggerside.
Craneoperationmode Outriggeroperationmode
(normalcase） Modeindicatorshows[04].
TurnON"modeoperationswitch"tocraneside. Voicemessage,“changecontrolmode”isissued.
Depresstheswitchforstoringhookwiththeswitch
forboom-upturnedON.
modeopreration
switch
(7-3)

7.8Methodofenginestartandstopthatusesradiocontroller
However,thisoperationispossibleunderthefollowingcondition.
１） Starterswitchmustbeon.
２） Thepowersupplyofthetransmittermustbeon.
３） Theoperationmodemustbearadiocontroll mode.
Enginestop Enginestart
Depresstheswitchformodeselectwiththeswitchfor
slewingC.C.W.turnedON.
Depresstheswitchformodeselectwiththeswitchfor
slewingC.W.turnedON.
(7-4)

８．１ Internal view of control box
Matters to be attended when carrying out electric welding
When carrying out electric welding, a large amount of electric current from the welder flows back
through ground circuit which in turn may damage the control box.
Be sure to observe the following:
(1) Turn OFF the starter switch.
(2) Disconnect the cable from the “－” (negative pole) terminal of battery.
(3) Be sure to connect the ground cable of welder securely to the nearest position from the
point to be welded.
Modo indicator Fuse Package Packing
Radio remote control selector switch
（８－１）

８．２ Mode indicator li
g
htin
g
when it is in normal o
p
eration
××
○×
×○
○○
○○
×○
－－
－－
－－
－－
－－
×○
－－
××
－－
Remote
control manual
Automatic stop for leaving minimum wire rope signal is received.
it allows to stop unwinding automatically when remaining wire ropes on the
drum come close to 3 turns so that the rope can not be unwound further.
Current control is in outrigger mode.
Only outrigger operation can be done either manually or remote controller．
No operation but outrigger is possible either manually or by remote controller.
Remote controller is not connected．
Check that remote controller cable is securely connected to connector．
Check remote controller cablel for damage and for break.
Current control is in traveling mode.
No operation but outrigger is possible either manually or by remote controller.
Elements in the mode indicator are to be fully lit up as in［8.8.］ for about
2 seconds after the starter switch has been turned ON．
The crane is carrying out system diagnosis while the “mode indicator” is
fully lit up．
What is to be checked during system diagnosis is if；
・Electronic circuit in the control box is functioning correctly，
・Manual control lever is at its neutral position，and
・Remote controller is connected to the crane and the controller functions
normally．
Current control is in radio controller mode.
Current control is in low temperature operation mode (manual mode)
Current control is either on radio control operation mode or on outrigger radio
control mode,but power to transmitter has not been turned ON.
"Rasing boom"operation is being carried out while hook has hit against
weight for over-winding alarm.
（８－２）
ML stop signal is received.
LED
display
Current control is in manual mode.
Hook hits against weight for over－winding alarm (over-wound).
During operation for storing hook.
Current control is in low temperature operation mode (radio controller mode)
Content
Automatic stop release switch ON.

８．３ Mode indicator blinking when it is in wrong operation.
８．４ Mode indication of each operation
Operation Mode
indication Operation
Fastest speed
mode Raising boom ３８ Storing hook
Medium speed
mode Lowering boom ３９ Mode select
Slow speed
mode Hoisting-up ４０ Horn
２ interlocking
operation Hoisting-down ００～０.０ Speed: 0～
100%
３ interlocking
operation Retracting boom
４ interlocking
operation Extending boom
５ interlocking
operation Slewing C.W.
６ interlocking
operation Slewing C.C.W
７ interlocking
operation
When wind-up switch of transmitter and radio control selector switch are pushed
at the same time,it is change to the operation display.
It returns to the state display when wind-up switch of transmitter and radio control
selector switch are pushed at the same time again.
（８－３）
The battery of the radio controller transmitter has decreased.
The emergency stop switch of the radio controller device is pushed.
The crane with the radio controller is operating it while checking the spool neutrality.
The "winding up hook" is operated in automatic stop for leaving minimam wire rope.
LED
display
３５
２６ ３６
２１
２２
２３
２５
Mode
indication
Mode
indication
２８
３０
３１
２４
２７
２０
３７
３２
３３
３４
Operation
It is operated to selector switch of shock-less function while operating the crane.
The manual operation is done at the radio controller mode.
Correspondence
The radio controller is operated at a manual mode.
1. The crane is operated at outrigger mode.
2. Outrigger is operated at the crane radio controller mode.
3. It is operated to switch of outrigger mode while operating the crane.
It is operated to switch of the low temperature operation mode while operating the crane.
Either one of operation such as"winding up hook","extending boom"is being carried out
while hook has hit against weight for over-winding alarm.
The hook storage switch was pushed while operating the crane.
It operates it by an automatic halt condition.

８．５ Error indication
When an error is detected, the mode indicator goes off or blinks and the voice message “Service remote control” sounds.
Mode
indication Trouble Available operation
None System error
４２
４３
４４
４５
４６
No operation
is possible. Readjust zero point.
４７
Operation is
possible. Turn power ON again.
４８ In case where it happens again,
４９ replace control box.
５０
５１ Check transmitter and receiver.
５２ After turning power ON again,
５３
５４ Check connection of cable to receiver.
５５ After turning power ON again,
Turn power ON again.
５６ System error
No operation
is possible. Turn power ON again.
５７
５８ Unloading error
Radio controller
cannot be
o
p
erated.
Replace control box.
５９
No operation
is possible. Turn OFF both emergency stop switches.
６０ Spool neutral error Derrick After turning power ON again,
６１ Hoisting
６２ Telescoping
６３ Slewing Check that manual lever has not been caught.
６４ Outrigger
６５ Acceleration
６６ Outrigger selection switch Front right RET/EXT Damaged switch exchange
６７ Front left RET/EXT It is possible to operate it excluding the damaged switch.
６８ Rear right RET/EXT
６９ Rear left ET/EXT
（８－４）
“Radio controller selector switch”in control box has
been controlled before indicator "8.8" goes off.
Radio
controller
cannot be
operated.
In case where it happens again,
replace control box.
wait until mode on "8.8" indicator goes off to
operate radio controller.
Manual lever (spool) fails
to be returned to neutral
within 2 seconds after
power has been turned
ON.
Measures
Either one of emergency stop switches has been
depressed.
No operation
is possible.
Failure in radio controller receiver Transmitter lever
has been pulled before indication on indicator
“8.8” goes off.
Transmitter switch has be depressed before
indication on indicator "8.8" goes off.Signal from
receiver failed to be received
Operation is
possible. wait until mode on "8.8" indicator goes off to
operate radio controller.
Replace fuse in control box.
Turn power ON again.
In case where it happens again,
replace control box.
“Hook storing/releasing switch”on crane side has
been controlled before indicator "8.8" goes off.
In case where it happens again,
replace control box.
No operation
is possible. wait until “8.8”on mode indicator goes off to
operate radio controller.
If lever has no problem, replace proportional
solenoid valve.