26
September 2020
Service Instructions
MAN-02-08-77-0714-EN Rev. 2
Section 4: Set-up/Start-up Procedure
Set-up/Start-up Procedure
4.4.2
2-Way Remote Electric with an ESD solenoid function
Figure 14
2-Way Remote Electric Without an ESD Solenoid Function Schematic
(M)
Hand Pump Selection Valves
(L)
Hand Pump Selector
(J)
Opening Solenoid
(K)
Closing Solenoid
K
J
L
M
I
M
NOTE:
The components referenced below are referencing Schematic 4.4.2. 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.
4.4.2.1
Check the Reservoir (I) to see the hydraulic is at the proper level.
4.4.2.2
Close Hand Pump Isolation Valve (O).
4.4.2.3
Rotate downward in the horizontal position both Hand Pump Selector
Valves (M).
4.4.2.4
Select and push inward the open or close knob located on the Hand
Pump Selector (L).
4.4.2.5
Use supplied Hand Pump Handle to discharge hydraulic fluid into the
open or close side of the actuator cylinder.
4.4.2.6
Continue hand pumping until the actuator completes the open or close
stroke and contacts the actuators adjustable end stops.
4.4.2.7
After completion of the Hand Pumping operation, push the Pump Bypass
Valve located on the top of the Hand Pump Selector (L) and pull the
pump handle downward retracting the pump ram into the pump body.
4.4.2.8
Rotate both Hand Pump Selector Valves (M) back into the upward
vertical position.
4.4.2.9
Check the Reservoir (I) to see the hydraulic fluid is at the proper level.
4.4.2.10
Once the ESD solenoid signal is re-established, slowly open Hand Pump
Isolation Valve (O).
