13
Operation Test
(a) Please reverse any two connections while the direction is incorrect.
(b) Firmly push
switch button to lower load chain until the limit spring touches
the limit switch. Power should be cut off automatically.
(c) Firmly push
switch button to check the collection of load chain into chain
bucket.
(d) Check the emergency stop device function :
While holding down either
or
button on the push button switch, push the
emergency stop button. Check that the hook stops when the emergency stop
button is pushed.
Also, check the hoist does not move in response to the push
button switch.
Finally, check that the emergency stop device pops out when turned to the right
and that operation can be resumed thereafter. If the equipment fails to pass any of
the above checks, check the wiring and automatic locking function of the
emergency stop device.
(e) Check load chain lubrication (It has been lubricated at our works, but the lubricant
may dry out during transportation). It is also advisable to keep a small amount of
lubricant in the chain bucket to keep the chain in an oil bath.
(f) Check chain position. Weld joints on links must face the same direction (Illust. 8).
Correct chain operation can only be achieved when all joints are vertically in line.
Illust. 8
Illust. 9
The bottom hook on multi-fall hoist must never be rotated as shown below.
(Illust. 9)
