Emerson Fisher 1061 Installationshandbuch PDF herunterladen (Seite 11)

Instruction Manual

D100325X012

1061 H & J Actuator

October 2012

Pressure Connections

1. If a positioner is used, the pressure connections to the actuator are normally made at the factory. Actuators without

positioners should have either a 4-way solenoid valve or a switching valve connected to the 1/4 NPT pressure

connections located at the top and bottom of the actuator cylinder.

2. Connect either NPS 1/4 pipe or 3/8-inch tubing between the actuator pressure connections and the positioner or

automatic controller. Keep the length of pipe or tubing as short as possible to avoid transmission lag in the control

signal.

Table 6. Wrench Sizes Required for Actuator Adjustment, Inches

Actuator

Size

Turnbuckle

(Key 70)

Hex Nut

(Key 11)

Hex Nut

(Key 71)

40 & 60

1-1/8

1-5/16

1-7/8

3/4

1-1/8

1-5/16

1-7/8

3. When the actuator is completely installed and connected to the instrument, check for c orrect action (air-to-open or

air-to-close) to match the controlling instrument. For successful operation, the actuator stem and operating shaft

mustmovefreelyinresponsetotheloadingpressurechangeonthepiston.

Adjustment

WARNING

Perform the steps in the WARNING at the beginning of the Maintenance section.

The only adjustment on the 1061 actuator is to make sure that the valve or other operated equipment is correctly

closed when the actuator piston is against the travel stop. For accurate adjustment, the valve or other operated

equipment must be removed from the pipeline.

If the actuator is equipped with an auxiliary manual handwheel actuator, make sure that the manual actuator is

disengaged from the operated shaft and that the bypass valve (key 68, figure 8) is closed before performing

adjustment procedures.

Perform the following steps to adjust the actuator turnbuckle. A regulated air supply will be required to stroke the

actuator during this procedure. Also, when performing adjustment, refer to table 6 for the sizes of open-end wrenches

required to loosen and tighten the hex nuts and turnbuckle. Key numbers referenced in this procedure are shown in

figure 6.

1. Remove the access plate (key 72). Also remove the machine screws (key 73) i f present.

Note

The cover (key 34) supports the outer end of the output shaftandshouldnotberemovedduringactuatoradjustment.

2. Stroke the actuator until the lower hex nut (key 11) can be reached through the access opening. Loosen the hex

nut.

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