Despatch RAD1-42 -2E with Protocol 3 - Manual (Page 13)

RFD1-42-2E Oven Owner’s Manual T HEORY OF O PERATION
Version 1 13
Copyright © 2012 by Despatch Industries.
All rights reserved. No part of the contents of this manual may be reproduced, copied or transmitted in any form or by any
means including graphic, electronic, or mechanical methods or photocopying, recording, or information storage and
retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
Figure 3. RAD1-42-2E Oven Damper
Control.
Damper slide
3. Theory of Operation
3.1. The RAD1-42-2E Oven
Despatch RAD1-42-2E ovens (Figure 2) effectively
distribute heat and have very fast processing times
compared to other lab ovens their size. Because of
effective heat distribution and fast processing times,
the RAD1-42-2E ovens are especially useful for
testing, preheating, sterilizing, drying, aging and
curing, along with other production applications.
Horizontal airflow with precision digital control
delivers uniform, fast processing. The overall result is
efficient productivity under strenuous conditions.
The unique Despatch computerized design moves
forced convected heat through perforated stainless
steel walls. The air is recirculated with a high volume
fan. The Despatch RAD1-42-2E oven employs a
higher volume fan than competitive ovens, allowing
dense loading of the chamber without interfering with the
process. RAD1-42-2E oven air delivery temperature is within 1/2
°C of the number appearing on
the digital display. Also, fresh air intake is regulated by a damper slide located on the left side of
the oven (Figure 3
). The exhaust opening is fixed on the RAD1-42-2E oven. The exhaust port,
located on the back of the oven, is covered by a hat bracket. For safety reasons, do not remove
the hat bracket.
The oven operator interface is located on the control panel to the
right of the oven door (Figure 2). The RAD1-42-2E oven has a
type 304 stainless steel interior and a scratch-resistant baked
enamel exterior. The interior cleans easily, and its construction
reduces heat loss and aids in maintaining temperature uniformity.
The RAD1-42-2E oven comes with two shelves.
3.2. Damper Control
The RAD1-42-2E oven comes with a manually-adjustable
damper mechanism which controls the flow of fresh air into the
chamber. The damper control is located on the left side of the
oven (Figure 3). The maximum amount of fresh air is distributed
into the chamber when the damper is in full open position.
3.2.1. 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
Figure 2. RAD1-42-2E Oven.