August 2016
Installation and Operation Manual
Part Number: VA001-507-32, Rev. 1
30
Section 4: Set-up/Start-up Procedure
Set-up/Start-up Procedure
4.8
Function Test
4.8.1
Double Acting Actuator without an ESD Solenoid Valve
NOTE:
The components referenced below are referencing Schematic 4.8.1. and is for
illustration purposes only. When using this procedure refer to the Bettis EHO Actuator
General Arrangement Drawing and Hydraulic Schematic for the unit being worked on.
4.8.1.1 Ensure both Hand Pump Selector Valves (M) are in the automatic open
position.
4.8.1.2 Energize the desired solenoid valve (J) to open the actuator or (K) to
close the actuator.
4.8.1.3 Push and release the OPEN/CLOSE PUSHBUTTON to start the Electric
Motor. The Hydraulic Pump Draws Fluid from the Reservoir and
discharges fluid thru either the opening solenoid (J) or the closing
solenoid (K) which ever one is energized.
4.8.1.4 Upon completion of the open or close stroke, the Pressure Switch will
reach its set point and stop the Electric Motor.
4.8.1.5 Upon completion of the open or close stroke, the Limit Switch(s)
can be configured to de-energized the solenoid that is energized.
Some field installations can use the customer’s control room logic to
de-energize the solenoids after the actuator stroke open or close is
reached.
Содержание Bettis EHO
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