Page 167 - FanPedia - By Twin City Fan and Blower

FAN-PEDIA SPARK RESISTANT

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Twin City Fan & Blower CONSTRUCTION
©2017 TCF.COM
PRESSURE BLOWERS

AMCA Type C

Typical Non Ferrous Materials
-Aluminum Type C offers a minimal level of spark resistance and only
-Aluminum/Nickel/Bronze requires that possible contact between stationary and rotating
2 -Monel components be reduced. Typically, this construction includes the
-Copper use of an aluminum inlet cone and an aluminum rub ring. The
-Brass aluminum inlet cone will be the first point of fan wheel contact
-Bronze if there is a mechanical failure. The aluminum rub ring placed
at the opening of the housing where the shaft passes, protects
against contact of the steel fan shaft and steel fan housing.

NON-FERROUS CONSTRUCTION

1 - INLET RUB RING
2 - RUB STRIP
3 - RUB RING

STEEL CONSTRUCTION
- HOUSINGS / FRAME
3
- WHEEL / IMPELLER
- FASTENERS
1 - PEDESTAL
- STEEL

NOTE #1: BEARINGS NOT ALLOWED
IN AIRSTREAM

NOTE #2: IF FAN HAS A NON FERROUS WHEEL
Construction varies by model.
AS STANDARD, USE TYPE B

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