Despatch LAD Series WITH PROTOCOL PLUS - Manual (Page 14)

6
Damper Control
The oven is equipped with a manually adjustable damper mechanism. The damper
control arm is located on the front panel of the oven. The damper adjustment controls
the flow of fresh air into the chamber. If the damper is in the full open position, the
maximum amount of fresh air is distributed into the chamber.
Determining Damper Settings
The optimum setting for the amount of fresh air that should be distributed into the
chamber depends on several factors. These factors include ambient environment
temperature, load conditions, load distribution, heat up rates, cool down rates, desired
temperature uniformity and most importantly the desired operating temperature. To
consider all of these variables at any one point in time is not practical and there are
engineering tradeoffs that should be considered. Therefore guidelines should be used
to determine the fresh air damper setting.
In general, the damper should be set so that the amount of fresh air flowing into the
chamber agrees with the desired operating temperature conditions. The following
outline shows the considerations involved with various damper position settings.
Full Closed Position
When the fresh air damper is in the full closed position, the chamber will be able to
achieve the maximum attainable heat up rates for the chamber. In addition, the
chamber will use the minimum amount of power to operate at the desired temperature.
In almost all cases, the fresh air damper should be in the full closed position in order to
efficiently operate at the maximum operating temperature for the chamber.
WARNING:
This oven is not designed for use with
flammable material. If your process
involves flammable material, see the LFD
Series.