Operation; Manual Operation With Hydrox Control Unit (Hcu) Basic - Vexve Hydrox HCU Basic Installation, Operation And Maintenance Manual

6. Operation

NOTE:
Please contact Vexve Oy if you intend to use the control unit with other actuators than
Hydrox.
When bleeding the system the hydraulic connectors must be loosened in the hydraulic
actuator. Otherwise the valve could change its position.

6.1 Manual operation with Hydrox Control Unit (HCU) Basic

Part numbers mentioned in this chapter refer to the figure 5.
Up to four valves can be connected and
operated with the Hydrox Control Unit (HCU).
Following initial steps are needed for taking the
system into use:
Systems without position transmitter:
1. Connect the hydraulic hoses to the
actuator's connections "A" and "B". Do
not tighten them fully.
2. Connect the hydraulic hose from actuator
port "A" to the first cabinet control block
port "A" and for port "B" vice versa. Check
figure 5.
3. Fill in the portable pump tank with
hydraulic oil.
4. Connect the hoses of portable pump to
the first couplings of the control block
with quick couplings.
5. Connect the power cable of portable
pump unit to electric grid and start the
pump with the green button.
6. To bleed the system, switch the hand
levers of the first valves (2) A and B in the
control valve block into the open position.
The port that is connected to the pressure
side hose of the portable pump unit is
pressurized. Let the air bleed out of the
loosened hydraulic connector on the
actuator. Repeat the foregoing procedure
for the hose connected in the port B by
switching the hoses to different ports or
by turning the lever in the portable pump
unit to change the pumping direction
depending on the portable pump type.
www.vexve.com
7. During bleeding process check the oil
level of the portable pump's tank and refill
the tank if necessary.
8. Tighten the hose connections on the
actuator.
9. Repeat the foregoing steps (4-8) with the
other valves.
When commissioning of the system has
successfully finished you can continue with the
operational steps to open or close the valves:
10. Choose the valve to be operated and
switch valves for both A and B ports to
the open position.
11. By operating the portable pump unit
the valve turns in the chosen position.
Pressure to port A closes the valve and
pressure to port B opens the valve.
12. Actuator's indicator slot (4) will show the
valve's position.
13. When shutting the valve observe that the
actuator's indicator slot turns into close
position and the pressure level starts
to increase. To ensure that the valve is
closed, continue pumping for a while after
the pressure rises. Pressure can be seen
from the pressure gauge at the pump
unit.
14. When opening the valve observe that the
actuator's indicator slot turns into open
position and the pressure level starts to
increase.
15. After the wanted operations are done,
stop the portable pump unit with the red
button.
11