Many workshops rely heavily on a chain hoist for most of their tasks. Hence, things may come to a standstill for them if it’s not working properly, or worse yet, stops working altogether.
This makes it important for you to be aware of some common issues you may run into while operating the hoist and learn how to fix them. We will be taking a look at some of them as well as talk about how to troubleshoot them.
One of the possible causes for this may be the emergency stop button being on, or the main switch being shut off. If that’s not the cause, however, you would want to check the fuse. If it’s blown, it may need to be replaced.
Sometimes, the hoist may stop working properly, or not work at all, when it gets overheated. In such a case, simply allowing it to cool down may work best.
However, if it turns out that neither of these things have caused your hoist to stop working, then the problem would likely be the pendant pin not being pushed out, or some of the screws may need a bit of tightening.
A common cause for this may simply be that you have overloaded the hoist. However, if that’s not the case, you should be checking the slip clutch. If it’s damaged in any way or not in the right position, you need to replace or readjust it.
If you’re sure about these things not being an issue, then you would want to make sure the brake is releasing properly. If it’s not, you need to check the gap setting, resistance level of the brake coil and the rectifier output voltage.
This might have something to do with the brake lining. This is especially in case the load is drifting more than 4 inches.
If it’s indeed the case, the brake lining may need replacing. However, sometimes, the brake lining may be working fine but it may just be that the air gap may have end up being a bit too wide. Simply readjusting it would fix the problem.
A chain hoist is believed to an ideal equipment when it comes to lifting heavy loads efficiently. However, it’s not the safest equipment out there.
You need to follow some safety measures to prevent the risk of an accident or serious damage. Here’s some important tips that may help you.
A Thorough Check Before Operating
It’s absolutely necessary to make sure the hoist is working properly before you start operating it. If you find something that doesn’t seem right, don’t start using it until it has been fixed.
The breaks and other important controls need more attention. Similarly, if any of the parts seem to have got damaged in some way, repair or replace it before proceeding. Overlooking these factors and operating the hoist is like an accident waiting to happen.
Take All the Safety Precautions
While attaching the load to the hoist, make sure it’s attached securely. It should also be in level.
If the load doesn’t reflect good balance, it may end up being a possible cause of an accident. So lower the load until it hangs properly and there is good balance.
Another important safety precaution is to always put the load in the middle, and not stand in the way of the hoist – whether it’s in motion or not. If there are also other people around you, make them follow the same.
Also do not ride on the hoist and don’t overload it. Sometimes it may handle a bit extra load than its maximum capacity, but some other times it may not be able to cope with it.
Handling the Chain and Other Parts
Make sure there are no obstructions in the chain. It may prevent it from operating smoothly. Also, avoid using the chain at its maximum tension level. It too can be a cause of accident.
There are some parts in the hoist system that operate on electricity. Make sure you don’t get too near to them – if you end up touching any of them you may get electrocuted.