Vexve Hydrox HCU Basic Installation, Operation And Maintenance Manual page 12

NOTE:
Please contact Vexve Oy if you intend to use the control unit with other position
transmitter than provided by Vexve Oy.
When bleeding the system the hydraulic connectors must be loosened in the hydraulic
actuator. Otherwise the valve could change its position.
Systems with 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.
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.
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10. Connect the position transmitter (5)
cables to the indication box (3).
11. Turn on the valve limit position indication
box.
12. Test the functionality of the LEDs by
switching the "TEST" knob (3).
When commissioning of the system has
successfully finished you can continue with the
operational steps to open or close the valves:
13. If there has been a lot of time of the
commissioning, test the functionality of
the LEDs by switching the "TEST" knob
(3).
14. Choose the valve to be operated and
switch valves for both A and B ports
to the open position.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.
15. The limit position indication box will show
the valve's position. RED shut; YELLOW
travelling; GREEN open.
16. When shutting the valve observe that
the RED lights up 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.
17. When opening the valve observe that the
GREEN lights up and the pressure level
starts to increase.
18. After the wanted operations are done,
stop the portable pump unit with the red
button.
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