Lower the load hook to the desired lowest
hook position.
Lower the load hook to the desired lowest
hook position.
─ The load hook should not contact the floor of the building.
─ The wire rope should not be slack.
─ A certain minimum clearance must be maintained between the cable guide and the drum housing. This clearance is determined in the next work step.
─ The hook path (distance between the highest hook position [= hook headroom, dimension C] and the lowest hook position) must not be greater than is specified on the type plate.
|
Cable guide |
|
|
| |
|
Cable drum |
Drum housing |
Measure the distance 'F' between the cable
guide and the drum housing and compare this with the table.
|
Wire rope hoist |
Reeving |
Distance 'F' |
|
GM 800 |
|
42 ± 2 |
|
GM 1000 |
|
56 ± 2 |
|
GM 2000 |
|
59 ± 2.5 |
|
GM 3000 |
|
73 ± 2.5 |
|
GM 5000 |
|
87.5 ± 3 |
|
GM 6000 |
|
102 ± 3 |
|
GM 7000 |
2/1 |
131 ± 4 |
|
GM 7000 |
4/2 |
87 ± 3 |
|
Cable guide |
|
|
| |
|
Cable drum |
Drum housing |
Measure the distances 'F1' and ‘F2’ between
the cable guides and the drum housing and compare these with the table.
|
Wire rope hoist |
Distance ‘F1’ |
Distance ‘F2’ |
|
GM 3000 - D |
66 ± 3 |
66 ± 3 |
|
GM 5000 - D |
80 ± 3 |
76 ± 3 |
|
GM 7000 - D |
84 ± 3 |
87 ± 3 |
|
|
Danger due to a suspended load falling! The cable can be torn from the cable drum, causing the suspended load to fall and kill or injure people if the distances ‘F’ or ‘F1’ and ‘F2’ are not heeded. These distances guarantee that there is always enough wire rope wound onto the cable drum. Always maintain ‘F’ or ‘F1’ and ‘F2’. |
If necessary, raise the load hook until the
distance 'F' or ‘F1’ or ‘F2’ is achieved.
● The lowest hook position of the load hook has now been determined.
|
Seal |
|
|
| |
Remove the housing cover of the electrical
system housing on the cable drum.
Press the seal apart in the centre with a
screwdriver and remove it.
The bottom hoist limiter is set with the left adjusting screw.
|
White pointer of cam ring |
Orange pointer |
|
| |
|
Left adjusting screw |
Adjusting key |
Remove the adjusting
key. It is fastened on two mounts on the gear limit switch.
Alternatively, a hexagon wrench key size 3.0 (ideally with rotary plate) can be used.
An electrically operated screwdriver may NOT be used.
Press the adjusting key into the adjusting
screw. Press it into the adjusting screw with light pressure.
If necessary: Turn the adjusting screw until
the white pointer of the cam ring lies to the right of the orange pointer. It
should be neither to the left of the orange pointer nor exactly on it.
The middle white arrow shows the exact position of the switching point; the two white arrows to the left and right of it indicate the start and end of the switching phase (switching hysteresis).
If necessary: Turn the adjusting screw until
the white pointer of the cam ring lies to the right of the orange pointer.
Continue turning until the white pointer lies exactly on the orange pointer and
a clicking sound is audible.
─ Turning to the right shifts the switching point downward.
─ Turning to the left shifts the switching point upward.
● The switching point for the lowest hook position is now set. At this switching point the load hook stops during normal operation after it has previously braked. The braking distance is automatically determined by ABUControl in the next step.
The bottom hoist limiter is set with the foremost adjusting screw.
|
Microswitch |
Control cam |
|
| |
|
Adjusting screw |
|
Turn the foremost adjusting screw until the
control cam is on the right of the Microswitch. It must not be on the left of
the Microswitch or exactly on it.
Turn the adjusting screw to the left until
the control cam presses in an anti-clockwise direction against the Microswitch
and an audible click is heard
● The switching point for the lowest hook position is now set. At this switching point the load hook stops during normal operation after it has previously braked. The braking distance is automatically determined by ABUControl in the next step.
In normal operation, the load hook brakes at a slow lifting speed before it stops at the lowest hook position.
The braking distance is also determined automatically by ABUControl.
Raise the load hook without load a few
metres upwards.
Lower the load hook with fast lifting speed
downwards.
● The load hook stops at the lowest hook position.
Depending on how the switching point was changed, it may be that the load hook with fast lifting speed moves to the switching point and then suddenly stops there or that the load hook brakes earlier than is necessary and a long stretch moves only at slow lifting speed.
If the load hook has to travel a long way at slow lifting speed, the end position of the brake phase can be changed manually. See Temporarily changing the end position of the brake phase of the hoist drive ‚ [2].
● ABUControl saves the new switching point of the lowest hook position and now calculates the necessary braking distance automatically.
During the next travel to the switching point:
● The load hook brakes (depending on the current lifting speed) shortly before the lowest hook position at slow lifting speed.
● The load hook only still travels with slow lifting speed immediately before the switching point.
● The load hook stops at the switching point.
Raise the load hook.
Lower the load hook at both slow and fast
lifting speed and check whether it halts at the lowest hook position.
|
Seals |
|
|
| |
Insert the seal on the adjusting screw and
press it in.
