DeZurik G6-C4 Handmatig - Pagina 8

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DeZURIK

Cylinder Operated G-Series Actuator

Removing Actuator

When eccentric valves are mounted in a vertical pipeline, or mounted in a horizontal pipeline with the

plug stem horizontal, gravity can cause the plug to swing to a lower position in the valve body when the

actuator is removed. To avoid this problem, place the plug in the lowest position before removing the

actuator.

1. Discontinue flow, relieve pipeline pressure and close valve.

Accidental operation of power actuator can cause personal injury or equipment damage.

Disconnect and lock out power to actuator before servicing.

2. Disconnect and lock out the pneumatic power to prevent accidental operation of the actuator.

3. Scribe corresponding lines on the valve and actuator to help align them during installation.

4. Remove screws (P3) and lift actuator assembly off adaptor (P1). See Figure 4 for connecting

parts identification.

1. Line up the scribe marks on the valve and actuator made

during actuator removal, then set the actuator on the valve

so that the valve shaft slides into the actuator gear sector.

2. Fasten the actuator assembly to the adaptor (P1) with

screws (P3). See Figure 4 for connecting parts

identification.

3. After actuator is mounted, and shaft key is assembled in

keyseat, secure shaft key by staking with a center-punch

on the end of the shaft. Stake on both sides of the shaft as

shown in Figure 5.

Note: Do not deform the outside diameter of the shaft.

D10455

Figure 4 – Connecting Parts Identification

Page 8

Figure 5 – Shaft Key Staking

August 2012