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October 2015

Service Instructions

VA001-196-30 Rev. 1

Section 1: Introduction

Introduction

1�9 Actuator Storage

For applications where the actuator is not put into immediate service, it's recommended

that the actuator be cycled with regulated clean/dry pneumatic pressure at least once per

month. Indoor storage, if available, is recommended for all actuators. Care should be taken

to plug all open ports on actuator and controls to keep out foreign particles and moisture.

Also, actuators should not be stored in an atmosphere harmful to resilient seals. For

extendedstorage,contactthemanufacturer'srepresentative.

1�10 Actuator Installation

1�10�1 Since there are many valve and actuator combinations, it is not practical to include

detailed instructions for each type. Mountings are designed to be as simple as

possible to keep guess work out of installation.

1�10�2 Actuators are shipped from the factory with the travel stops adjusted for

approximatelyninetydegreerotation.Generallyitisnecessarytomakeslight

travel stop adjustments once the actuator is installed on the valve. Refer to the

valvemanufacturer'srecommendationsforspecicrequirements.Whenthevalve

has internal stops, the actuator should be adjusted at the same points.

NOTE:

The actual "stopping" should be done by the actuator. If the valve does not have internal

stops, adjust the actuator to the full open position. Using this as a reference point, rotate

thevalveclosedandadjusttothevalvemanufacturer'sspecicationsfortotalrotation.

1�10�3 Good instrument practices are also recommended. Clean/dry regulated

pneumatic pressure is essential for long service life and satisfactory operation.

It should be noted that new pneumatic lines often have scale and other debris in

them and these lines should be purged of all foreign material.

NOTE:

Scale and debris can damage control valves, solenoids, seals, etc.

1�11 Actuator Start-up

1�11�1 Prestart-up checks

1. Unithasbeenmountedonvalveproperly.Gearangemountingbolts,

stem key, setscrew(s) installed and secured.

2. No tubing damaged or accessories dislodged during shipping or

installation.

3. Indicatedpositionconrmsvalveposition.

4. All switching valves in normal operating position as per Schematic/

Instructions.

Emerson Bettis CBB Series User Manual

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