-7
• Use an air hose whose inside diameter is at least 9.5 mm
(318
in.).
• Before connecting the air hose or pipe to the hoist, be sure to flush or blow out with air to prevent
the invasion of foreign matter (dust, etc.) into the air motor.
• Compressed air supplied to the hoist should be free from moisture or foreign matter.
lnstall an air filter to eliminate them from air supply.
• lnstall a lubricator to feed lubricant to the air motor.
See Chapter 8, Section 8. 1 "Lubrication". (Never operate the hoist without lubricant.)
• Connect the air filter, regulator and lubricator as close to the hoist as possible.
• When the air hose is connected to the hoist, pour about 10 drops of lubricant into the connecting
port of the hoist.
See Chapter 8, Section 8. 1 "(3) Recommended Lubricants".
•lnstall a dump valve (drain valve) at the lowest point in the piping.
5. Checks after Installation and Test Run
5. 1 Check of Hoisting Operation
Always keep the working air pressure no less than 0.4 MPa l4kgflcm', 60psil.
At the initial operation, repeat up
I
down operations several times at low speed, then go to the full-
speed operation.
Adjust the speed by Controlling the pushing force on the push buttons.
At this point, check the lubricator is feeding lubricant to the air motor.
See Chapter 8, Section 8. 1 "Lubrication".
Check the indications marked on the push buttons correctly show the actual directions of up
I
down
operations.
5. 2 Check of the Preventive Device against Reverse Winding
(Overlowering Limit Switch) -See Fig. 1
Slowly operate the hoist in the lowering direction while
paying attention to the air from the air exhaust hole.
Check the preventive device against reverse winding
works at the lower Iimit. (Check the hoist stops when the
wire rope extends1.9m).
lf the hoist dose not stop within 100 mm after starting
air exhaust, stop operation immediately.
Air exhaust hole
Fig. 1
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