Luffing crane tires manipulation

This paper describes the manipulation essentials luffing crane tires and precautions
  (1) Boom decrease (from arm). Pull back the joystick, foot pedal control luffing speed. Observe Change
Motor current, the current value <55A, the amplitude of continuous operation with a load; current exceeds 55A Time (Jm: <70A), the starting time should be less than one arm of the operating cycle time of 15%.
     (2) Boom increase (drop arm). Push the scissor pallet truck forward, feet stepped on the accelerator pedal to control the speed. Note that the first case at idle push the handle, and then gradually increase the throttle, voltage <80v.
     (3) lL stop luffing jib (keep working range). The handle is placed in situ (middle position), to ensure amplitude limit device to work properly and Renzi Jia should rise to the highest position (ground 4413mm). Because the central brake is normally closed, so only when the pressure is greater than o. 3MFa, the crane was in a loose central brake brake status before manipulation travel.
     (4) cares road. The "traveling downhill" switch to the "drive" position; then "braking, driving" electric door lock twist to "drive" the value of the stomach; steering wheel put the throttle pedal to control the speed, the crane can press the need for speed driving. Observation status ammeter readings sail when lifting, high speed current value should be <198A; low speed should be <100A.
     (5)-L slope traveling. Shangfen traveling crane manipulation procedures and level road is basically the same, but you want to switch to the forward travel control "invasion" file, you can Shangfen throttle driving. Meter readings observed running state, the current reference value is 220A.
     (6) small downhill slope. The "system power, driving" electric locks twisted into "drive" position to take; would travel control switch to the "o" position; steering wheel, hoisting sails by the inertia weight component down, foot brake pedal down control speed.