JLG M450 Operator Manual - Manual (Page 55)

SECTION 4 - MACHINE OPERATION
3121210 – JLG Lift – 4-9
4.7 BOOM
A RED TILT WARNING LIGHT IS LOCATED ON THE CONTROL CONSOLE
WHICH LIGHTS WHEN THE CHASSIS IS ON A 5 DEGREE OR GREATER
SLOPE. DO NOT SWING OR RAISE BOOM ABOVE HORIZONTAL WHEN
LIGHT IS LIT OR AUDIBLE ALARM SOUNDS.
DO NOT DEPEND ON TILT ALARM AS A LEVEL INDICATOR FOR THE
CHASSIS. TILT ALARM INDICATES CHASSIS IS ON A SEVERE SLOPE (5
DEGREE OR GREATER). CHASSIS MUST BE LEVEL BEFORE SWINGING,
OR RAISING BOOM ABOVE HORIZONTAL.
TO AVOID UPSET IF RED TILT WARNING LIGHT LIGHTS WHEN BOOM IS
RAISED ABOVE HORIZONTAL, LOWER PLATFORM TO GROUND LEVEL.
THEN REPOSITION MACHINE SO THAT CHASSIS IS LEVEL BEFORE
RAISING BOOM.
TRAVELING WITH BOOM BELOW HORIZONTAL IS PERMITTED ON
GRADES NOT EXCEEDING THOSE SPECIFIED ON THE SERIAL NUMBER
PLATE.
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINERY IF ANY
CONTROL LEVER OR TOGGLE SWITCH CONTROLLING PLATFORM
MOVEMENT DOES NOT RETURN TO THE ‘OFF’ OR NEUTRAL POSITION
WHEN RELEASED.
TO AVOID A COLLISION AND INJURY IF PLATFORM DOES NOT STOP
WHEN A CONTROL SWITCH OR LEVER IS RELEASED, REMOVE FOOT
FROM FOOTSWITCH OR USE EMERGENCY STOP SWITCH TO STOP THE
MACHINE.
Swinging the Boom
Depress footswitch to swing boom, with footswitch activated,
position SWING control switch to RIGHT or LEFT for direc-
tion desired.
WHEN SWINGING THE BOOM MAKE SURE THERE IS AMPLE ROOM FOR
THE BOOM TO CLEAR SURROUNDING WALLS, PARTITIONS AND EQUIP-
MENT.
Raising and Lowering the Lower and Mid Boom
Depress footswitch to raise or lower the Lower and Mid
Boom, with footswitch activated, position Lower Boom Lift
switch to UP or DOWN as desired.
Raising and Lowering the Upper Boom
Depress footswitch to raise or lower the Upper Boom, with
footswitch activated, position Upper Boom Lift switch to UP
or DOWN until desired height is reached.