Hi I'm Pat Clark with Lifting Gear Hire corporation,
and today we're discussing troubleshooting ideas
surrounding our electric chain hoists.
We'll start with the basics first.
When we do receive a call from one of our customers
in regard to our electric chain hoist,
it's usually due to one culprit, and that is an
inferior power source.
We do everything we can to inform you the proper voltage and amps required to
power the hoist.
In fact, when you receive the hoist, you'll notice on the pendant and affixed
are some reference materials.
Specifically this one points out the proper gauge
and length extension cord only utilize to power one and two ton electric chain
hoist
in fact at full load and running on 115 volts
this can see amps as high as 24 we also offer hoists
ranging in capacity from two-and-a-half all the way up to ten ton
and could be wired for either 220 or 440 volts.
If it is wired for 220, you can see an amps as high as 25.
If its wired for 440, you can see amps as high as 13.
So in summary, you wanna make sure you check all the power sources that lead up to
the hoist itself.
You may have noticed you take delivery of the
hoist, we ship the controls
and the power source separately.
On our one and two ton electric chain hoist,
we'll supply you with the cord and the appropriately sized 115 plug.
On our large
units, they are supplied with the 220 or 440 volt.
We'll supply you with the whip
that has the exposed wires.
It's your responsibility find the appropriately sized OSHA plug
and fit up accordingly.
To connect them,
grab the plug, find a notch,
match it up with its male/female counterpart, screw in the power plug,
grab the pendant cord and repeat the same procedure.
And now you're ready to try the hoist.
So when you're checking the hoist, grab the control pendant and if you were to
press
up on the hoist and the hoist moves down, or if you press down on the hoist
and the hoist moves up, you may have your leads
reversed.
You wanna re-check those connections and then retest again.
You may also
experience the hoist's
inability to lift at the rated capacity, or
improper lifting or lowering speeds.
First, you need to check to make sure
that whatever you're lifting
is the appropriate for the capacity hoist that you're
working with.
Also you may have
experienced a loss or drop in voltage.
Either way, you're going to have to check and amend one or both
Also pertained to power, if your hoist is making a loud buzzing or humming
sound, or is clicking,
it may be trying to get more power to the hoist.
Again, you're going to have to
check your connections and your cords.
Because these hoists our electric, they have a duty cycle, specifically 25
percent, meaning that out every hour,
you can count on being able to use the hoist for about 15 minutes.
The hoists are
engineered and designed to stop working
and allow themselves to cool down when they're overheating.
To prevent this down
time, we ask you to follow a few steps.
First and foremost, as mentioned earlier, make sure you have the appropriate size
gauge length and power
that's actually supplied to the hoist.
Next, decrease the frequency of your lifts.
And lastly, make sure that you decrease the weights of the loads that you're lifting
or hoisting.
These electric chain hoists have an electromagnetic brake on the
inside.
It's designed to stop all hoisting operations when you're not using the
pendant, or there's no power to the hoist at
all.
However, if when the powers off, the hoist continues to run,
you must give us a call immediately.
If your hoist has the ability to lift but
not lower, or vice versa,
let's start with something rudimentary.
We want to make sure that our limit
switches are not engaged.
Also, depending on the length of the rental, or if you're working in an area with
high
vibration,
you may experience some of the wires on the interior or the back of the pendant
become loose.
If that's the case, you want to make sure the powers off,
remove the housing, and inspect for any loose wires
there or on the back of the pendant.
Before we finish up, I'd like to remind you
of a few safety guidelines.
It's important to never use the hook and the chain as a sling itself.
Doing so
can cause deformation of the hook
and damage to the chain.
In addition, when loading the hook,
it's important not to point load it.
The hook is engineered and designed
to deform to prevent overloading and catastrophic failure.
As a good alternative, choose a piece of hardware
taken safely rest at the bottom of the hook.
In addition, on these multi-chain blocks, we
want to make sure we don't
capsize the hoist block itself.
In doing so
can cause kinks in the chain.
Thank you for watching this troubleshooting video.
We hope that you
found it helpful.
For more questions regarding electric chain hoists and other products that
we rent,
give us a call.
As a reminder, the contents of this video are for informational
purposes only.
Please consult the manufacturer's guidelines and use and care instructions
before beginning.