ABB RHD8000 Series Manuel d'instructions - Page 6

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8. Mounting

8.1 Actuator Check

- Is the actuator filled with the appropriate oil type?

- Is enough oil in the actuator?

- Did you fasten the separately delivered vent screw in the highest bore (depending

on the mounting orientation)?

8.2 Mounting Orientation

See table 2 for permissible mounting orientations. To facilitate mounting and mainte-

nance, however, it is recommended to use orientation IMB 3.

8.3 Mounting Instructions

- Make sure that the actuator is accessible from all sides to ensure convenient hand-

wheel operation, electrical connection, and replacement of assemblies.

- Avoid direct exposure to rain, snow and other environmental influences. Select the

mounting site accordingly.

- Exclusively mount the actuator on a rigid, non-vibrating support to avoid relative

motion between the actuator and the valve.

- When mounting the actuator close to heat sources use an insulating layer or shield-

ing.

8.4 Mounting the Actuator to the Valve

8.4.1 Preparing the Equipment

- Make sure that the shaft and lever bore surface are clean and free of grease.

- Determine the length of the stay tube (not included in the scope of delivery).

- Move the valve to the "CLOSED" position.

- Drive the actuator close to the corresponding end position. Use the handwheel for

the last few mm. Observe the permissible angle.

- Spacing "L" minus 300 mm gives the required length of the link tube.

- Drill a cone bore into the valve lever for mounting the second ball-and-socket joint,

as seen in Figure 4.

- Insert the ball-and-socket joint, secure with crown nut and split-pin.

- Remove the welding bushings and weld them to the stay tube (C 15 to DIN 17210)

- Insert the link rod between the two ball-and-socket joints and screw it in.

- If required adjust "L" by turning the link rod.

- When all adjustment steps are finished, fasten the counter nuts.

8.4.2 Adjusting the Stops in Dependence of the Travel

- Move the output lever / valve to the position requiring fine adjustment.

- Put the stop onto the toothing as close to the output lever as possible and fasten

with screws.

- Move the output lever towards the stop using the handwheel; turn the coupling rod

for fine adjustment.

- Fasten the counter nuts.

- Fasten the stop in the other mounting orientation close to the end position, depend-

ing on the toothing.

8.4.3 Adjusting the Stops in Dependence of the Torque

- First proceed as described in section 8.4.2.

- Prior to re-fastening the counter nuts lock the handwheel and turn the counter nut

until a pretension occurs in the valve's closed position.

- Fasten the counter nuts