Yale HOISTS SHAW-BOX YKA Operation & Service Manual page 123

7 Inspection and maintenance
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 hoist limit
*1
switch (see section 4.11),
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
07.2020
Adjusting operational hoist limit switching, "bottom" (B)
Actuate the DOWN-button in the control pendant with caution.
Lower the load hook to 0.39 in in front of the switching point (observe the minimum
distance "d").
– If the operational hoist limit switch should switch off beforehand, turn the
Turn the adjustment screw "S6" clockwise until the switch contact latches audibly.
Actuate the UP-button in the control pendant.
– The "bottom" operational hoist limit switching position has been set.
Reeving
1
2
4
)
enlargement
[in]
2
3.9
5.9
Adjusting emergency hoist limit switching, "bottom" (A)
The "bottom" operational hoist limit switching position must be set.
Actuate the DOWN button in the control pendant with caution.
Observe the hoisting movement, until operational hoist limit switching (B) switches
off in the bottom hook position.
adjustment screw "S6" anticlockwise 1 revolution and repeat step 2.
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