Wood-mizer KD150 Series, Руководство пользователя

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23
The drying rates in Table 1 are the rates to follow
when first using the machine. These rates can be
safely exceeded by an additional 50% (i.e., 1.0% can
be raised to 1.5% and 3.3% can be increased to almost
5%) given careful judgment and operating experience
for Groups 1, 2, and 3. Top quality moisture meters, or
weight samples, must be used at these higher drying
levels to avoid lumber damage. Some hardwoods
such as Southern Red Oak, White Oak, and Group 4
hardwoods should not use any sort of accelerated
schedule.
Moisture Removal Rate Per Day (Maximum)
These removal rates are estimates only. Always check
your actual removal rates daily, using an accurate
moisture meter. There are many variables that affect
drying rates, such as how lumber is sawn, stacked,
and how the chamber is built.
KD150 Running at 100% calculated moisture
removal rate per 24 hour period.
* Drying rate may be too high, look at the maximum
rates on page 27.
Drying Group 1 woods at a rate of less than 5% per
day may result in mold or staining of the lumber.
Drying Group 3 woods at a rate greater than 3.5%
per day may result in checking or other degrade to
the lumber.
Group 1 woods generally do not have a maximum
drying rate, you will want to remove the moisture
quickly, and fast enough to avoid mold and stain.
Set the Dry Bulb on 120º/Wet Bulb at 75º. The
compressor will run constantly. You can turn the heat
switch off once the temperature reaches 100º, Heat
from the compressor motor and fan motors will keep
the temperature rising. (At the end of the drying
cycle, for softwoods, turn the compressor switch
“OFF”, and set the dry bulb temperature to 150º F. or
160º F. to set pitch.)
Use the alternate schedules if you are in a warm
climate or otherwise unable to maintain a 90º F dry
bulb temperature at the beginning of the drying
cycle.
Load Size 300 BF 500 BF 700 BF 1000 BF
Group 1 11.8% 7.1% 5.1% 3.5%
Group 2 8%* 4.8%* 3.3% 2.4%
Group 3 7.4%* 4.4%* 3.2% 2.2%
Figure 3-1 Wood Groups
Moisture Removal Rates
Figure 3-2 Lumber Types
Figure 3-3 Moisture Removal Rates
KD150 Drying Schedules
Cedar, Eastern White Pine, Red (Norway) Spruce, White
Fir, Balsam Pine, Eastern White
Hemlock, Eastern Spruce, Black
Larch, Eastern Spruce, Red
Aspen
Basswood
Cottonwood
Poplar
Ash, Black Birch, Yellow Maple, Soft Walnut
Ash, White Cherry, Black Maple, Hard
Beech Elm, White Sweet gum (Red gum)
Birch, White Hickory Tupelo (Black gum)
Elm. Rock
Oak, Red
Oak, White
Softwood
Soft Hardwoods
Medium Hardwood
Hardwoods
Group 1 ( KD150 load size, 300 BF,
3.5m
3
) 4/4 Softwoods
4/4 Soft Hardwoods
Group 2 ( KD150 load size, 1000 BF,
7m
3
) 4/4 Medium Hardwoods
8/4 Softwoods
8/4 Soft Hardwoods
Group 3 ( KD150 load size, 1500 BF,
9m
3
) 4/4 Hardwoods
8/4 Medium Hardwoods
Group 4
8/4 Hardwoods
When drying a mixed load of woods, colored wood
(ie Red Oak) must be stacked on the bottom to pre-
vent the moisture from it staining the other wood.
Wood-Mizer
KD150 12/22/17