8-10
[CHECKING AFTER STARTING ENGINE]
Check the followings in this section after starting the engine and before starting the first work every day.
CAUTION
The checkups described in this section should be carried out after starting the machine.
Refer to "Operation 2.2 Starting Engine" and later to execute the engine startup, traveling
operations, outrigger operations and crane operations.
[1] CHECKING FUNCTIONS OF BOOM
At the performance of function check for boom, ensure the safety such that hook and boom
would not interfere with any personnel nor object.
1. Check abnormal noise from boom and searcher hook during
crane operation.
2. Operate crane without load and check loose and missing of each
bolt.
3. Check hook for deformation, abnormal noise from bearing and
correct function of wire rope latch (1).
[2] CHECKING MOMENT LIMITER FOR OPERATION (SEARCHER HOOK MODE)
If you find any abnormality with the moment limiter, immediately contact us or our sales service
agency.
1. Turn the starter switch to the “ON” position.
2. Check with the working status lamp. The red of the lamp lights up for 2 seconds and then the green
lights up.
3. Check the moment limiter display unit.
Verify that no error code is displayed at the “RATED TOTAL LOAD” display on the display panel.
4. Shift the wire falls selector switch on moment limiter display unit to ”Searcher hook mode” (all LED ON).
5. Start the engine and operate the crane as follows to verify if the moment limiter properly displays the
value.
Crane Operation and Displayed Parameter
Value Displayed on
Moment Limiter
Displayed “boom length” with the boom length at minimum 3.7 m
Displayed “boom length” with the boom length at maximum 12.5 m
Displayed “working radius” with the boom length of “5.9 m” (2-row booms) and
boom angle of “57 °“
3.0 ± 0.1 m
Displayed “ACTUAL LOAD” when the weight of the known weight was hoisted
Must be equal to the total weight of weight + lifting ring
Note that it may show some errors depending on the boom conditions.
Actual load
6. Operate the crane until the moment limiter display values indicate the boom length is "5.9 m" (booms (1)
+ (2)) and boom angle is "57 degrees", then measure the "boom angle" and "working radius.
If the measured value(s) differ from the moment limiter display value, contact us or our sales agency.
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