Yale HOISTS SHAW-BOX YKA Operation & Service Manual page 118

7 Inspection and maintenance
Adjustment tool for geared limit switch
(Ordering no. A0443050990)
Dim. [in]
50 Hz
1PS
5.1
1PD
a
*1
2PS
2.8
2PD
4PS
1.6
4PD
b b = a
c 2.4
*1
d Effective hook path
With the option hook operated
*1
hoist limit switch (see section 4.12),
dimension "a" increases by 3.9 in,
dimension "c" increases in accordance with
the table.
Type Dimension "c"
YKA/SKA, YKB/SKB
YKC/SKC, YKE/SKE
YKD/SKD
118
Preparatory work
Remove the screws on the hood of the geared limit switch.
Remove the hood.
NOTICE
set the switching points.
➢ Only adjust the switching points with the "adjustment tool for geared limit switch".
60 Hz
5.9
3.1
2
enlargement
[in]
2
3.9
5.9
Adjusting operational hoist limit switching, "top" (B)
1st Actuate the UP-button in the control pendant with caution.
Hoist the load hook to 0.39 in in front of the switch-off point (B).
– (Observe the minimum distance "a" + "c" between the hook block and the next
– If the operational hoist limit switch should switch off beforehand, turn the
Turn the adjustment screw "S3" anticlockwise until the switch contact latches audibly.
Actuate the DOWN-button in the control pendant.
– The "top" operational hoist limit switching position has been set.
The geared limit switch can be damaged if an electric screwdriver is used to
obstacle or hook aperture "C" (see section 7.15), depending on the dimension at
which the hook hangs lower.
adjustment screw "S3" clockwise 1 revolution and repeat step 2.
07.2020