Emerson Bettis CBB Series User Manual

October 2015
Service Instructions
VA001-196-30 Rev. 1
5
Section 1: Introduction
Introduction
1�11�2 Check Connections:
1. Pneumatic/hydraulic components connected as per schematic enclosed
or in service manual supplied.
2. Pneumaticsupplyconnectedtoidentiedports.
3. Electrical connections terminals are secure.
4. Wiring as per enclosed diagram or service manual supplied.
1�11�3 Whenactuatorisrstputintoserviceitshouldbecycledwithregulated
pneumatic pressure. This is necessary because the seals have been stationary,
causing them to take a "set". Therefore, the actuator should be operated through
severalcycles,exercisingtheseals,resultinginaservicereadycondition.
1�11�4 The actuator speed of operation is determined by a number of factors including:
1. Power supply line length
2. Power supply line size
3. Power supply line pressure
4. Controlvalveandttingoricesize
5. Torque requirements of the valve
6. Size of the actuator
7. Setting of speed controls
1�11�5 Duetotheinteractionofthesevariablesitisdifculttospecifya"normal"
operating time. Faster operating times may be obtained by using one or more of
the following:
1. Larger supply lines
2. Larger control valve
3. Higher supply pressure*
4. Quickexhaustvalves
 *Nottoexceedmaximumoperatingpressureofactuatororcontrolcomponents
1�11�6 Sloweroperatingtimesmaybeobtainedbyusingowcontrolvalvestometerthe
exhaust.Excessiveexhaustowmeteringmaycauseerraticoperation.Normally,
incoming supply should not be metered.
1�12 Actuator Operation
1�12�1 Controlled Operation: Controlled operation is accomplished by pressurizing and/or
depressurizing the appropriate cylinder inlet(s) of a double-acting.
Do not exceed pressures indicated on actuator nameplate�
1�12�2 Manual Operation: All pressure must be vented or equalized on both sides of the
pneumatic piston prior to manual operation.

Emerson Bettis CBB Series Specifications

General

Brand	Emerson
Model	Bettis CBB Series
Category	Controller
Language	English