
(M)
Hand Pump Selection Valves
(L)
Hand Pump
(J)
Opening Solenoid
(K)
Closing Solenoid
K
J
L
M
I
M
Installation, Operation and Maintenance Manual
VCIOM-13254-EN Rev. 3
February 2021
33
Section 4: Set-up/Start-up Procedure
Set-up/Start-up Procedure
4.8.2
Double-acting Actuator with an (Optional) ESD Solenoid Valve and Accumulator
Figure 21
2-Way Remote Electric Without an ESD Solenoid Function Schematic
NOTE:
The components referenced below are referencing Schematic 4.8.2. 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.
4.8.2.1
Ensure both Handpump Selection Valves (M) are in the automatic
open position.
4.8.2.2
ESD (Emergency Shut Down) Solenoid Valve (P)is constantly
energized closed.
4.8.2.3
Ensure Isolation Valve (H) is closed and Isolation Valves (N) and (O) are
both open.
4.8.2.4
Push and release the OPEN/CLOSE PUSHBUTTON to start the Electric
Motor. The Hydraulic Pump Draws Fluid from the Reservoir and
discharges fluid to the nitrogen pre-charged accumulator.
MANIFOLD
CLOSE
(M) Handpump Selection Valves
(L) Handpump
(J)
Opening Solenoid
(K) Closing Solenoid