Hook Inspection; Limit Switch Adjustment - Tractel Group tralift TE Serie Manual De Utilización Y De Mantenimiento

1) Press the << down >> button on the pendant control to empty the chain bag. When the chain stop is positioned at about 4
in. (100 mm) from the hoist body, stop the hoist.
2) Remove the end stop from the chain
3) For single fall hoists -
- At the other end of the chain, remove the load hook from the chain.
- For two fall hoists -
- Remove the opposite end of the chain from the fixing bracket on the hoist body. Pull out this chain fall from the bot-
tom hook block sheave.
NOTE : Do not remove the entire length of the old load chain from the hoist load wheel. The old load chain will be
used in reeving the new load chain into the hoist.
4) Cut the old load chain into short lengths and dispose of it so that it is not reused.
5) Cut the new load chain to the length required.
Cutting chain can produce flying particles! Wear eye protection and provide a shield over the load chain.
6) Fit an open link to one end of the old load chain remaining on the hoist load wheel.
NOTE : The chain link opening shall be positioned outside from the load wheel axle.
7) Hook one end of the new chain end onto the open link. The new load chain links weld shall be oriented outside from the
load wheel axle (See Fig 27).
8) Operate the hoist to allow the reiving of the new load chain around the wheel.
9) Remove the old load chain and open link.
10) For single fall hoists
- Fit the working end of the new load chain to the load hook.
- For two fall hoists -
- Fit the working end of the new load chain into the bottom hook block sheave ensuring that the chain is not twisted.
Rotate manually the block sheave to reeve completely the chain around the sheave sprocket wheel.
- Fit the new chain end to the anchor part located on the hoist body checking that the chain is not twisted.
11) On the end of the new load chain going to the chain bag, fit the end stop with its buffer bushing.
Before operating the hoist, check carefully that the new load chain is not twisted and the chain welds are positioned outsi-
After fitting a new load chain, the end limit switches bumper have to be remounted properly. Be careful on the 2 falls, the 2 blocks are
different. A test has to be cared out before using the hoist in normal working condition.

6.3 - Hook Inspection

On tralift TE range, the upper suspension hook is fixed and mounted perpendicular to the hoist. Only the load hook has ball bearings and can
swivel. The suspension and load hooks should be inspected regularly for wear. Damaged safety latches must be replaced immediately. The
hooks should be frequently checked to ensure there is no trace of corrosion, impact, distortions or cracks or elongation.
Inspect the hooks for the following :
1) The load hooks should rotate freely even when under load.
2) Latches should be appropriately secured in place and open/close properly.
3) Any signs of cracking (use of magnetic particle or dye penetrents are recommended).
4) Any indications of deformation including:
a) Throat Width
A maximum movement of 10% of the hook opening distance, "A" in Fig. 23, is acceptable according to ANSI B30.10.
If the maximum opening distance "A" is greater than the values in Fig. 23, the hook shall be replaced immediately
before any further use. This operation must be performed by a competent person or a service shop approved by
TRACTEL.
b) Twisting
Check for twisting of the hook (Fig. 23).

6.4 - Limit Switch Adjustment

The upper and lower electrical limit switches are factory set. These are direct contact end limit switch. However after replacing the load
chain, it will be necessary to check the right positioning of the end limit switch or adjust the electrical limit switches.
This operation must be performed by a trained service technician who is qualified to work on powered equipment or by a
service shop approved by TRACTEL. The hoist must not be used to lift any load during the adjustment operations.
WARNING
CAUTION
de the hoist load wheel axle.
WARNING
15
GB