April 2021
Installation, Operation and Maintenance Manual
VA-DC-000-1952 Rev. 0
15
Section 4: Set-up / Start-up Procedure
Set-up / Start-up Procedure
4.2
Initial Check of the Unit
4.2.1
Check to ensure all hydraulic tube fittings are tight. Vibration during shipment may have
loosened connections.
4.2.2
Visually inspect the unit to make sure tubing, hand valves, gauges and other equipment
have not been damaged.
4.2.3
Using the actuator control schematic drawing, verify that the Flow Control Valves are fully
opened ((turn stem completely counterclockwise)).
4.2.4
Ensure System Bypass Hand valve (71) is closed.
4.2.5
Ensure the Accumulator Hydraulic Isolation Valve (74) and Thermal Volume Controller
Hydraulic Isolation Valve (75) are open.
4.2.6
Ensure Power Oil Isolation Valve (73) is closed.
4.3
Initial Connections
Electrical connections should have been made to the MCC (Motor Control Center). If power is not
connected, follow the instructions under Section 3, Electrical Connections, before continuing.
!
CAUTION
Before the actuator is stroked, ensure the reservoir has been filled with fluid to the proper level.
(See Section 2.7, Hydraulic Fluid.)
4.4
Initial Pre-Charge
Refer to Section 2.8 Accumulator for the pre-charge setup of the ECAT.
4.5
Initial Reservoir Fill
Ensure the ECAT Oil Reservoir (60) is filled to the proper oil level. Remove the Hygroscopic Breather (61)
if fluid needs to be added to the reservoir.
4.6
Hydrostatic Pressure / Function Test
The Accumulator has already been hydrostatic tested per A.S.M.E. requirements and does not require
re-testing. This test is to discover if any leaks have developed in the hydraulic fittings during shipment.
4.6.1
Ensure Isolation Valves (90), (91) (optional) and (83) are open.
4.6.2
Ensure Accumulator Hydraulic Isolation Valve (74) and Thermal Volume Controller
Hydraulic Isolation Valve (75) are open.
4.6.3
Ensure the Power Oil Isolation Valve (73) is closed.
4.6.4
Open the reservoir Isolation Valve (65).
4.6.5
Open the System Bypass Valve (71).
