Yale HOISTS SHAW-BOX YKA Operation & Service Manual page 120

7 Inspection and maintenance
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
120
60 Hz
5.9
3.1
2
enlargement
[in]
2
3.9
5.9
Adjusting the fast/slow switching "top" (B)
Hoist the load hook to 0.39 in in front of the desired switch-off point (observe the
minimum distance "b").
– If the load hook should become slower beforehand, turn the adjustment screw
Turn the adjustment screw "S4" anticlockwise until the switch contact latches audibly.
Actuate the DOWN-button in the control pendant.
– The fast/slow switching "top" has been set.
Adjusting emergency hoist limit switching, "bottom" (A)
Actuate the DOWN-button in the control pendant with caution.
"S4" clockwise 1 revolution and repeat step 1.
07.2020