Limit Switch; Chain Bucket - Tractel tralift TT Serie Manual De Instalación, De Utilización Y De Mantenimiento

Figure 3-9
EN

3.2.3. Limit switch

The electric chain hoist is equipped with a gearbox limit switch as
standard. This is also suitable for normal limit switch operation with a
high degree of accuracy. The operation of the limit switches (highest and
lowest hook position) must be checked during start-up.
Three different transmissions are available that are adapted to the lift:
TT 250/500
Transmission Colour
i = 1:1 black
i = 1:3 yellow
i = 1:6 blue
TT 1000
Transmission Colour
i = 1:1 black
i = 1:3 yellow
i = 1:6 blue
Description of settings (see Figure 3-10):
– Before pulling in the chain or changing the chain, the gearbox limit
switch must be mechanically disabled by securing the rocker (1).
– Pull in the chain.
– Move to highest hook position, rotate red ratchet wheel (front) (2) to
switching cam of top limit switch (3); (rotate clockwise for higher hook
position and anticlockwise for lower hook position).
– Activate rocker, move to lowest hook position, rotate green switching
wheel (rear) (4) to switching cam of bottom limit switch (5); (rotate
anticlockwise for higher hook position and clockwise for lower hook
position).
– Activate rocker (must engage in switch wheel).
– Check operation of limit switch; the end stop and the hook fittings must
not touch the housing.
10
Single fall lift [m] Double fall lift [m]
20 10
60 30
126 63
Single fall lift [m] Double fall lift [m]
30 15
90 40
192 96
Figure 3-10
3
1
4

3.2.4. Chain bucket

– Move chain out at load side until limit switch is activated.
– Attach free end of chain to housing (see chapter 3.2.2)
– Attach chain bucket and allow chain to run in (see Figure 3-11)
DANGER!
All steel plate chain buckets must be equipped with an additional wire
cable with a minimum diameter of 2 mm (see Figure 3-12).
Figure 3-11
2
5