(2) should be carried out in normal use 125% of the rated load, lifting off the ground about 100 mm, 10 minutes of static load test and check whether it is normal.
3 dynamic load test is rated load weight for repeated lifting and move around the test, trial and check the mechanical transmission parts, electrical parts and connecting parts are normal and reliable.
4 In use, the absolute prohibition does not allow circumstances, and exceeds the rated load and nominal hourly closing times (120 times) of the cases.
5 installation and maintenance, must be strictly checked limit device is flexible and reliable, when hook up to the upper limit position, the hook from the shell of the housing to the roll must be greater than 50mm (10t, 16t, 20t must be greater than 120mm). When the hook down to the lower limit position, should ensure safety rope on the drum circle, circle must be effective and safe in two laps or more.
6 Press the two allowed the opposite direction of the electric hoist movement flashlight door button.
7 After work must supply the total gate opened, cut off the power.
8 electric hoist shall hand manipulation, the manipulator should fully grasp the safety rules, non-oblique pull hanging crooked.
9 must be in use by specialized personnel hoist regularly checked and found that failure to take timely measures and carefully documented.
10 Adjust the amount of electric hoist brake down, they should ensure that the rated load, brake down the amount S ≤ V/100 (V stable within the next minute the load lifting distance).
11 rope discard criteria:
Wire rope inspection and discard criteria by CB/T5972-1986 "crane wire rope inspection and retirement of practical norms" implementation.
12 electric hoist use must keep enough oil and keep the oil clean and should not contain impurities and dirt.
13 oiled rope should be used when a stiff brush or a small piece of wood is forbidden by hand directly to the working rope oiled.
14 electric hoist does not work, you can not put heavy objects hanging in the air, to prevent parts produce permanent deformation.
15 in the course, if we find fault, immediately turn off the main power supply.
16. Use should pay particular attention to the situation of wearing parts.
17.10 to 20 tons hoist in the long continuous operation may occur after automatic power-off phenomenon, which belongs to the motor overheating protection function, then you can drop over a period of time until the motor has cooled down you can continue working.
18. Use and management according to JB9009-1999 "rope hoist safety rules" for the first four execution.
19. Inspection and maintenance according to JB9009-1999 "rope hoist safety rules" in implementation of Article 5.
Safety Precautions
In understanding the basis of operating instructions, please note the following:
· Please use the instructions and memorize the contents of the nameplate after the operation.
· Keep upper and lower stop position before lifting objects block adjustment.
· Before use make sure the brake situation is reliable.
· If it is found rope before using any of the following abnormal conditions, never operate.
· Bending, deformation and corrosion.
· Rope fracture extent exceeding the requirements, wear volume.
· Installation before use with 500V megger check the motor and control box insulation resistance, cold resistance at room temperature should be greater than 5MΩ, before use.
· Never exceed the rated load lifting objects from a hook at the rated load capacity has been marked on the nameplate.
· Lifting objects prohibited by people, and the other Never lift electric hoist as lifting mechanism for manned.
· The following shall not be someone lifting objects.
· Lifting objects, hook in the swing state can not lift.
? Keep moving to the object just above the hoist lifting again, not oblique hanging.
· Limit does not allow repeated use as a limit switch.
? Do not lift objects connected with the ground.
? Do not over-jog operation.
? Do not pull the front of the line by hand switches other objects.
? The maintenance and inspection must cut off the power before.
· Maintenance and inspection work must be carried out in a no-load condition.
· Make sure before using wedges firmly attached and reliable.
