Despatch RFD1-42 -2E with Protocol 3 - Manual (Page 14)

T HEORY OF O PERATION RFD1-42-2E Oven Owner’s Manual
14 Version 1
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
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retrieval systems without the written permission of Despatch Industries, unless for purchaser's personal use.
3. Theory of Operation
3.1. The RFD1-42-2E Oven
Despatch RFD1-42-2E ovens (Figure 2) are Class A
ovens specifically designed to meet NFPA 86
requirements. They 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 RFD1-42-2E 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 RFD1-42-2E oven employs a
higher volume fan than competitive ovens, allowing dense loading of the chamber without
interfering with the process. The RFD1-42-2E oven maintains an air delivery temperature within
1/2ºC of the number appearing on the digital display. The oven regulates fresh air intake by a
damper slide located on the left side (Figure 3), and sets the exhaust rate by an adjustable control
on the exhaust stack.
The oven operator interface is located on the control panel to the right of the oven door (Figure
2). The RFD1-42-2E 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 RFD1-42-2E oven comes with two shelves.
These Class A ovens are specifically designed to meet NFPA 86 requirements. They include a
pressure relief panel, purge timer and exhaust fan.
Danger!
Class A ovens are designed for a specific amount of solvent.
Exceeding this amount could result in an explosion. Do not
process closed containers of any substance or liquid in this
oven because they may explode under heat. In case of fire, leave
door(s) as they are. Shut off electricity. Shut off fuel. Call the fire
department. Stay away
.
Figure 2. RFD1-42-2E Oven.