Skutt EnviroVent - Manual (Page 8)

8
III
FIRING
Shelves
The bottom kiln shelf, either a full shelf or two half shelves placed with a slight gap between
shelves, need to be supported at least one inch off the kiln floor to allow sufficient air
circulation. If the holes are blocked, venting cannot take place. Subsequent shelves through
the kiln may be placed with a slight gap between them to allow the best air circulation.
Important: Keep the kiln floor clean and the holes unobstructed for the EnviroVent

to
continue doing its job properly.
Motor Operation
The EnviroVent

motor must be switched ON throughout heating in order to ventilate your
kiln and collect the fumes. The motor has a fan that keeps it cool and operating properly
during the hottest firings. If you fire with the motor off beyond 2000

F, you void the
warranty and may damage the motor.
Leaving the motor in the on position during cooling will reduce the amount of time it takes
to reach a temperature where you can safely handle your ware. If a slower cooling is
preferred, the EnviroVent

may safely be turned off when the internal kiln temperature is
less than 2000

F.
Fresh Make-up Air
It is essential to have a source of fresh air to replace the air vented outdoors. The
EnviroVent

fan moves between 60-80 cubic feet per minute. Unless you know that the
room ventilation can handle the total volume of loss, leave a window or door slightly ajar for
make-up air. Remember: do not exhaust fumes near a fresh air intake.
Loading
Loading the kiln evenly from top to bottom is still recommended, but not as critical as
before venting. Certain applications may require placing a shelf between the lid and top
ware for air deflection below the air holes or a small plate under each hole.
Plug all Peepholes and Shut Lid
Turn on the EnviroVent

motor, close the lid, plug the peep holes and fire. You can open
any peephole during firing to check the bending of witness cones and the progress of your
firing. Do not prop the lid or leave any peepholes open during a normal firing. To do so can
cause fumes to enter the room and additional room temperature air drawn into the kiln may
affect the firing.
Firing times
When the correct holes are drilled in your kiln, firing times should not be much longer than
normal. If firing times are significantly longer, see Section 5 on Troubleshooting for help.
Additional ventilation