78
1‒2 LowerControls
Symptom Cause Remedy Referto
Operationsfromlower
controlsarenotavailable.
Engineisstopped. Starttheengine. Chapter8,Section1
Keyswitchonthelower
controlsisturnedto
“
”(OFF)or“ ”(UPPER
CONTROLS).
Turnthekeyswitchonthe
lowercontrolsto“ ”
(LOWERCONTROLS).
Chapter8,Section1
Enableswitchisnotheld
up.
Holdthemasterswitch
upandoperatetheboom
fromthelowercontrols.
Chapter8,Section4
Preheatlightonthelower
controlsisflashing.
Releaseallcontrolsand
thepreheatlightturnsoff,
thenoperateagain.
Chapter3,Section1
Chapter4,Section3
Chapter8,Section4
Enginedoesnotstart. Bothoftheoilpressure
lightandthechargelight
onthelowercontrolsare
litoff.(Theselightsarelit
offwhentheengineis
running.)
Turnthekeyswitchonthe
lowercontrolsto“
”
(LOWERCONTROLS).
Chapter8,Section1
Pulloutbothoftheupper
andloweremergencystop
buttonsto“ON.”
Chapter8,Section1
Boomfunctionsarenot
availablewithemergency
pump.
Bothoftheoilpressure
lightandthechargelight
onthelowercontrolsare
litoff.(Theselightsarelit
offwhentheengineis
running.)
Pulloutbothoftheupper
andloweremergencystop
buttonsto“ON.”
Chapter8,Section1
Turnthekeyswitchon
thelowercontrolsto“ ”
(LOWERCONTROLS).
Chapter8,Section1
Warningbuzzersounds
whenpre-operationcheck
switchisoperated.
Platformisnotastowed
posture.
Turnthekeyswitchon
thelowercontrolsto
“ ”(OFF).Afterchecking
surroundingsafety,start
theengineandstowthe
platform.Thenoperate
thepre-operationcheck
switchagain.
Chapter6,Section2