BLUE M
Blue M - - DC 146 Series Industrial Ovens, Models DC, DCW, DCI, DCC
Page 33
6.1 System Overview
A high volume horizontal type airflow system is employed with an electrical heating system to provide
maximum temperature uniformity. Heating and the generation of airflow occurs in the conditioning plenum
located below the workspace floor. The plenum is isolated from the workspace to prevent direct heat
radiation. Air circulation is generated by a centrifugal type blower wheel that is driven by an externally
mounted motor. The water-cooled cooling coil, which is optional for the Model DC / DCW and standard for
the Models DCI and DCC, is installed in the conditioning plenum to the right of the electric heaters.
Standard units employ perforated duct walls to permit air circulation through the workspace. Special units
that require temperature uniformity requirements will employ semi-pierced duct walls. A horizontally placed
air diffuser panel is installed in the right side duct wall to uniformly direct airflow upwards.
For Models DC / DCW, adjustable air intake and exhaust dampers / ports are installed on the left side of the
oven to enable the exchange of process air with fresh ambient air. These ports can be opened for the
purpose of either cooling or to remove undesirable process vapors or moisture. They can also be adjusted to
provide between a one-pass airflow system and a full recirculated airflow system in the workspace.
For Models DCI and DCC, inert gas is injected into the conditioning plenum, replacing ambient atmospheric
air for the complete process cycle. A pressure relief valve for the Model DCI and a vent port for the Model
DCC are installed to vent the chamber.
Type J Thermocouples are placed in the workspace airflow at the top rear wall to measure temperature with
the main and limit controllers.
6.0
IR CIRCULATION SYSTEM
CONDITIONING PLENUM – MODEL DCW1406
Air Intake Damper
in Closed Position
Discharge Air
Exhaust Port
Heaters
Air Diffuser
Blower Wheel
Differential Air
Pressure Sense Tube
Model DCW1406
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