Siemens EA 746 Series Especificações descarregar pdf (Página 29)

Technical Instructions POWERS™ Controls No. 4 Pneumatic Damper Actuator

Document Number 155-032P25

October 10, 2005

Page 10 Siemens Building Technologies, Inc.

Extended Shaft

Mounting - Fixed

Actuator,

Continued

4. Place the front of the actuator on the "X" dimension line so the actuator shaft faces

the damper shaft. Place the centerline of the actuator over the "Y" dimension line

(Figure 8).

5. Thread Clevis 331-801 onto the actuator shaft and tighten it against the lock nut.

Assemble Linkage Kit 331-958 (Table 6, Items 1 through 6) to the actuator assembly

per Figure 8. The linkage is assembled so the damper shaft will rotate CCW as

actuator pressure increases. This is a typical normally closed damper installation.

Figure 8. Fixed Mounted Actuator Assembly.

Dimensions in Inches (Millimeters).

Table 6. Linkage Kit 331-958 Parts

(Figure 8).

Item Part No. Description Qty. Material

1 331-918 Clevis pin 2 Zinc plated

steel

2 331-930 Spring washer 1 —

3 331-929 Washer 1 Nylon

4 331-941 Crank assembly 1 —

5 331-807 Hitch pin 2 Zinc plated

steel

6 331-922 4-inch link 1 Steel

Table 7. Linkage Kit 331-958 Crank Connections

(Figure 8).

Dimensions

Inches (Millimeters)

Application

Crank

Hole

Number

X Y

1 8-1/2

(216)

(51)

4-inch (102) stroke -

90° rotation

2 8-1/2

(216)

(76)

4-inch (102) stroke -

70° rotation

3 8

(203)

1-1/2

(38)

3-inch (76) stroke -

90° rotation

4 8

(203)

2-1/2

(64)

3-inch (76) stroke -

60° rotation

1 2 ... 24 25 26 27 28 29 30 31 32 33

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