Emerson Bettis RGS Q-Series Bedienungsanleitung

Bettis RGS Q-Series

Double-Acting Actuators

Installation, Operation and Maintenance Manual

RGS011110-1 Rev. 0

November 2015

Installation, Operation and Maintenance Manual

RGS011110-1 Rev. 0

Table of Contents

November 2015

Table of Contents

Section 1: Overview ��1

Section 2: Installation ��2

2.1 Valve Attachment ........................................................................................ 3

2.2 Accessory Mounting .................................................................................... 4

2.3 Piping and Operation................................................................................... 4

2.4 Travel Adjustment........................................................................................ 7

Section 3: Troubleshooting ��10

Section 4: Maintenance

4.1 Periodic Maintenance Schedule ..................................................................11

4.2 Lubrication..................................................................................................11

4.3 Maintenance Kit......................................................................................... 12

4.4 Piston Seal Replacement............................................................................ 12

4.5 Body Maintenance ..................................................................................... 15

Appendix A: ��22

A.1 Dual Cylinder Model .................................................................................. 22

A.2 Single Cylinder Model ............................................................................... 24

November 2015

Installation, Operation and Maintenance Manual

RGS011110-1 Rev. 0

Section 1: Overview

Overview

Section 1: Overview

NOTE:

All activities must be carried out in order to ensure proper actuator operation.

Always read all instructions before beginning maintenance.

Bettis RGS Q-Series actuators are composed of two or three basic sub-assemblies, one or

two force modules and a torque module. The force module contains the piston and rack

which provide linear motion. The torque module contains the gear which converts the

force modules’ linear motion into torque and operates the valve.

Every actuator assembled by Bettis is tested prior to shipment to our customers.

Order specific documentation may be available upon request.

Installation, Operation and Maintenance Manual

RGS011110-1 Rev. 0

November 2015

Section 2: Installation

Installation

Section 2: Installation

Bettis actuators may be mounted in any position/orientation. If necessary, lift the actuator

with straps placed inside the framework of the body. Never lift the actuator by the cylinders,

tie rods, or travel stops. Lifting the actuator with the valve attached is not generally

recommended.

Figure 1

November 2015

Installation, Operation and Maintenance Manual

RGS011110-1 Rev. 0

Section 2: Installation

Installation

Threaded Lifting Eyes

Lifting eyes may be threaded into the body section and be used to lift the actuator.

Figure 2

2�1 Valve Attachment

NOTE:

Prior to mounting the actuator, verify alignment of coupler and shaft to ensure that the

valve will move to correct position.

Ensure the actuator is in the same position as the valve. It may be necessary to stroke the

actuator to determine the correct mounting orientation. Attach the actuator to the valve using

the proper bracket and coupler, or with a Bettis Universal Mounting Plate (UMP) if provided.

Using all mounting holes indicated on Bettis dimensional drawings, tighten all fasteners hand

tight, then torque the fasteners to the corresponding value on the table below.

Table 1�

Thread Pattern Ft-Lbs Nm

Q203/204/205 M6 7 9

M8 16 22

Q207/210 M10 32 43

Q212/214 M20 235 318

Installation, Operation and Maintenance Manual

RGS011110-1 Rev. 0

November 2015

Section 2: Installation

Installation

2�2 Accessory Mounting

As a standard, Bettis RGS Q-Series actuators are provided with NAMUR slotted accessory

mounting geometry. When installing accessories, such as switch boxes or positioners,

tighten accessory mounting bolts hand tight, stroke the actuator three times to ensure

proper alignment, then tighten the accessory mounting bolts to the proper torque.

Check the dimensional drawing or associated product data sheet for exact dimensions.

2�3 Piping and Operation

The operation of a Bettis RGS Q-Series Double-Acting (DA) actuator is comparable to any

double-acting rack and pinion actuator.

Instrument air, water, and other power gases and fluids may be used to cycle the actuator so long

as construction materials were chosen accordingly during assembly and maximum allowable

pressure is not exceeded. Air driven stainless-steel actuators with stainless-steel

or composite cylinders are not harmed by wet air (so long as freezing does not occur).

Aluminum and chrome-plated steel cylinders may be harmed over time by the presence of water.

WARNING: DO NOT EXCEED PRESSURE RATING

Exceeding the stated maximum pressure may result in damage to equipment and danger

to personnel including severe injury or death. Consult the actuator label for operating

limits. If an actuator label is missing, contact Bettis to request a replacement.

WARNING: DO NOT EXCEED TEMPERATURE RATING

Operating outside of the minimum and maximum temperature range may result in damage

to equipment and danger to personnel including severe injury or death. Consult the

actuator label for operating limits. If an actuator label is missing, contact Bettis to request a

replacement. An example of an actuator label is provided below for your reference.

NOTE:

CE marking indicates product conforms to the requirements of applicable directives as

listed on the actuator label.

November 2015

Installation, Operation and Maintenance Manual

RGS011110-1 Rev. 0

Section 2: Installation

Installation

All Bettis actuators are shipped in the fail clockwise (Left-Hand) orientation unless

ordered as fail counterclockwise (Right-Hand). The orientation may be reversed in the

field by moving all accessories to the opposite side of the shaft and turning the actuator

top–side down.

Double-Acting (Left-Hand): pressure on the end cap ports pushes the pistons inward

and causes counterclockwise rotation. Pressure to the base plate ports pushes the

pistons outward resulting in a clockwise rotation.

Double-Acting (Right-Hand): pressure on the end cap ports pushes the pistons inward

and causes clockwise rotation. Pressure to the base plate ports pushes the pistons

outward resulting in a counterclockwise rotation.

Figure 3

Left-Hand

Right-Hand

Piping Guidelines:

• For dual cylinder models (205, 210, and 214), both end cap pressure ports

(P1 and P2) must be utilized for proper operation.

• P1 and P2 are typically connected together and powered by a single air pathway.

• For single cylinder models (203, 204, 207, and 212), P2 does not exist.

• P3 is a pressure port on the body.

Installation, Operation and Maintenance Manual

RGS011110-1 Rev. 0

November 2015

Section 2: Installation

Installation

Figure 4

205DA, 210DA, 214DA

Figure 5

203DA, 204DA, 207DA, 212DA

November 2015

Installation, Operation and Maintenance Manual

RGS011110-1 Rev. 0

Section 2: Installation

Installation

2�4 Travel Adjustment

The following instructions are for Left-Hand orientated actuators. For non-standard

models, clockwise and counterclockwise motion will be the inverse of what is described

below. Check the actuator model and orientation before adjusting the Travel Stops.

Figure 6

Travel Stop

A-1

Travel Stop

B-1

Travel Stop

A-2

Travel Stop

B-2

Figure 7

Travel Stop

205DA, 210DA, 214DA

203DA, 204DA, 207DA, 212DA

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