
Generally if the Vacuum is running off a dryer plug with hose attached to the
Vacuum and the duct work you are cleaning, the amperage will be dropped
enough you will never have a problem. It is only times when you may have
the Vacuum hooked up to large ductwork, with brand new filters, and it has
no real restriction against the impellor will it ever be a problem.
If you are finding that the vacuum is overheating or you have blown a
breaker it probably means you do not have enough restriction on the suction
and the Vacuum is running over amperage.
This normally happens if you are:
1. Running the Vacuum without a hose. If the Vacuum is run wide open
without a hose attached the motor will overcompensate and cause the
amperage to increase thus over heating the motor or cause the Vacuum to
trip a breaker switch.
2. Have the vacuum attached to as large duct without the vents sealed off.
3. You are running in an old building with weak electrical supply.
4. You are running in a building with an inadequate electrical supply, such
as an ATCO trailer.
5. The electrical circuit you are plugged into is currently loaded with another
appliance or lighting that is pulling electricity away from the vacuum.
6. The filters are brand new.
7. Also note, restricting the airflow to zero will also cause the motor to
overheat.
8. You are using an extension cord that is too light duty. Minimum
requirements for extension cords are as follows:
Up to 100ft - 12 Gauge
100 + ft - 10 Gauge
When the Vacuum is running with brand new filters, it may require you to
manually restrict the airflow until the filters get a bit of dust in them. If the
motor overheats or uses too much amperage, due to having no restriction,
there are a number of things you can do to create restriction: