WMDKdoc020322
7-1
7
SECTION 7 IMPORTANT INFORMATION
The drying schedules in this manual are to be used when drying timber in the WMDK
Modular Kiln System
The schedules outlined are a general guide. However, many kiln operators use more
severe drying conditions than those in the schedules while others dry at a more
conservative rate.
For faster drying and best results - the species, thicknesses, and moisture content of the
timber which take the same schedule should be segregated into (1) kiln whenever
possible.
If it is necessary to dry various species and thicknesses of timber in the same kiln, always
operate the kiln according to the greenest, thickest, and most difficult to dry species.
The kiln should always be full, or near full, when using schedules specified for species
and thickness being dried. If the chamber is partly filled, the exhaust should be cut back in
equal proportions.
Some boards within the same specie and thickness retain moisture more than others.
When this happens, it usually shows up as a low depression on the final setting and will
require longer equalizing time. At this point the vent may need to be reopened to vent the
extra moisture.
Pieces which are square, or nearly so, or in dowel form in cross section, will dry more
quickly than wider pieces of the same thickness.
Wide timber, i.e. timber exceeding 300mm in width, is more apt to caseharden and
surface check than narrower boards. For this reason, we suggest that when a large
portion of the load is wide boards, that it be dried at a slower rate than narrow stock.
Under no circumstances should any of the fans or exhaust blower be shut off during the
drying period of a charge of timber.If the fans or exhaust blower are turned OFF during
drying they will be cool and thus become condensers for water vapor, allowing possible
damage to the motors. The exhaust blowers must be allowed to run continuously even
when the exhaust valve is closed.
The exhaust valve should never be closed entirely except for conditioning of the timber in
the final stages of drying or for preconditioning well air-dried stock
Quarter sawn timber requires a longer time for drying than plain-sawn timber of the same
thickness and species.
If mould occurs on the timber, open the exhaust valve to reduce humidity. Mould thrives
Содержание MK20-2
Страница 50: ...Operation Loading The Kiln 4 4 5 WMDKdoc020322 Operation See Figure 4 2 FIG 4 2 Blanking Sheet Material ...
Страница 54: ...Operation Temperature Controller 4 4 9 WMDKdoc020322 Operation Set the value to 95 Press the S key again ...
Страница 68: ...SECTION 9 WMUK MODULAR KILN RECORD SHEET 0 1 2 0 1 2 0 1 2 ...
Страница 69: ... 0 1 2 0 1 2 0 1 2 ...
Страница 71: ...Replacement Parts Fan Module Assembly Replacement Parts CESHdoc020322 10 2 10 10 2 Fan Module Assembly ...
