Yale HOISTS SHAW-BOX YKA Operation & Service Manual page 122

7 Inspection and maintenance
Adjustment tool for geared limit switch
(Ordering no. A0443050990)
Dim. [in]
50 Hz 60 Hz
1PS
5.1 5.9
1PD
a
*1
2PS
2.8 3.1
2PD
4PS
1.6 2
4PD
b = V × t × 0.023 ft
V = Hoist speed [fpm]
t = Brake ramp [s]
(Factory setting = 1.5 s
b
Example:
YKC/SKC-L05-...S264-V
b = 64 × 1.5 × 0.023 = 2.2 ft
c 2.4
*1
d 4.7
e 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
122
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".
Reeving
1
2
4
)
enlargement
[in]
2
3.9
5.9
Adjusting operational hoist limit switching, "top" (B)
See section 7.15.1 Geared limit switch - version 1
Adjusting emergency hoist limit switching, "top" (A)
See section 7.15.1 Geared limit switch - version 1
Adjusting the fast/slow switching "top" (B)
See section 7.15.1 Geared limit switch - version 1
The geared limit switch can be damaged if an electric screwdriver is used to
07.2020