Is the PELVAC system noisy ?
Yes, transporting pellets via a vacuum system is noisy; however, you are able to use the timer function in the
controller to have it run during work hours or prevent the system from running during unwanted hours; such as
during the evening.
Is the PELVAC system dusty?
The PELVAC system is a closed loop system; however, part of the over pressure in the air return is redirected
back to the silo. If your silo is not completely air tight or does not consist of breatheable dust reducing fabric,
then some dust can escape.
What is the max distance you can transport pellets?
Max distance is up to 15 meters when installing the system with smooth vacuum tubes and when vertical
suctions are minimized below 2.5 meters.
What is the max vertical suction height?
A lot of suction is required to transport pellets vertically and should be minimized as much as possible; however,
it should not be a problem to perform vertical lifts of up to 2.5 meters.
If you require more suction power, consider upgrading to a 1000 watt vacuum motor that will give you 30%
more power.
How often should you clean the vacuum filter?
It depends. Normally it is not needed to clean the filter as the filter is designed only to prevent large fines from
passing through, but all wood pellets are different and some can cause blockages more easily than others. If you
are repeatedly having pressure loss in the vacuum you may want to begin a regular cleaning schedule of the filter
to prevent downtime.
How often should you change the vacuum motor?
Typical lifetime of the motor is 500 hours ( about 30 tons of pellets ) and should be replaced. However, with the
price of a new vacuum motor around 60 euros, it still remains as a very inexpensive solution.
Will dust in the pellets be a problem?
Pellets with less than 1% dust, typically, do not pose any problems.
Can I run the system without a filter in the cyclone?
No! The metal filter protects the vacuum from pellets. Wood pellets that are sucked into the vacuum will
damage the vacuum motor.
How does the distance sensor work?
Distance sensors work by ultrasound. One part of the sensor resonates a ultra sound wave which echos back
from the pellet level; while the other sensor measure the time for the echoing. This allows the controller to
calculate distance.
Where can I purchase smooth vacuum pipes?
Contact your NBE dealer.
Where can I purchase the pipe bends for the 50mm pipes?
These fittings are common at any home building or plumbing store.