E-Mu SP1200 Specifications download pdf (Page 78)

PROPRIETARY DATA: This document contains proprietary data of ABB Inc. No disclosure, distribution (electronic or otherwise),

or other means of dissemination may be made without written permission.

3BUS 208 000 R130156 Utility Service Installation

Air Purge

The Scanning Platform is air purged to assure reliable operation in a paper mill

environment. The purge air duct is attached to the idler end column either directly

or with a flexible air hose. If a flexible air hose is used, the flexible portion of the

hose should be less that 10 ft. (3 m) to avoid a drop in pressure. See Figure 4-1.

Figure 4-1 Purge Air Duct Attachment

Note: Do not allow the weight of a heavy metal air duct to rest on the plastic

top cap. Off load the duct by means of bracing to the machine

foundation or use a flex ducting.

The source of air for air purge can be supplied by either the DC motor cooling air

or the ABB purge blower. Clean DC motor cooling air has the advantage of no

special air filter maintenance and is generally preferred when available. If the DC

motor cooling air is used, an adjustable damper is needed to reduce the air flow and

avoid excessive system pressure loss (especially when the doors are opened).

For installation of the ABB purge blower, refer to the instructions which are supplied

on the illustration drawings.

Normal applications should operate with the platform fully sealed. For high

temperature applications, a continuous air flow must be supplied through the scanner

beams to the drive end.

Idler End Column

Ty pic al

Installation

NOTE:Designed to accommodate

6” I.D. Duct

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E-Mu SP1200 Specifications Page 78