Despatch RAD Series - Manual (Page 23)

RAD Oven Series Owner’s Manual A SSEMBLY & S ETUP
Version 1 23
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.
4.3.1. Down Drafts
Where down drafts occur in gravity stacks, their cause should be determined and corrections
made without delay. They can cause concentrations of exhaust volatiles within the work chamber,
poorly baked products, poor burner operation or the spreading of odors into the factory.
Down drafts may result from insufficient gravity stack height, or its failure to extend above
nearby buildings, roofs, pent houses, or other obstructions which cause downward wind
movements into the stack. Such causes are usually easily remedied. Or they may result from a
negative pressure within the factory caused by excessive gravity or forced exhaust ventilation
from the factory. The most effective remedy for this condition is the installation of a “make-up”
supply air system equal in capacity to the total exhaust from the factory.
4.4. Wiring & Power Connections
See electrical schematics in Section 8.3 for line connections.

The oven must be hardwired directly to the electric supply.

Verify proper fan rotation on initial start-up and recheck rotation
whenever wiring or electrical component changes are made.
Each fan has an arrow showing correct rotation.
Danger!
All grounding and safety equipment must be in compliance with
applicable codes, ordinances and accepted safe practices.