Using The Manual Pump; Opening The Valve; Closing The Valve; To Stop The Valve Moment - Vexve Hydrox HCU Remote Installation, Operation And Maintenance Instructions
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5.3. Using the manual pump
In the event of a power failure, or some other
kind of partial control failure, valves can be
operated locally using the manual pump. This is
accomplished by using a hand operated pump
and control lever located above the valve block
and next to the hydraulic pump.
NOTE: The control levers are
spring return and thus keep
their position. The user must
hold the push-pin nut in the
desired position throughout
the operation. This is a safety
feature, which ensures that
the directional control valve
is returned to neutral position
when the operating cycle is
completed.
5.3.1. Opening the valve:
1.
Select the desired valve.
2.
Press the control push-pin nut on the top
of the valve down, (See figure 7, arrow 1)
towards the valve block and hold it.
3.
Pump the hand pump.
4.
The pressure increases significantly when
the valve reaches the open position. Make
sure that the valve has reached the end
position by watching the position indicator
in the HMI on the electrical cabinet. If there
is no power, continue pumping for a brief
period after the pressure has risen.
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5.3.2. Closing the valve:
1.
Select the desired valve.
2.
Press the control push-pin nut on the
bottom of the valve up, towards the valve
block (see figure 7 arrow 2), and hold it.
3.
Pump the hand pump.
4.
The pressure increases significantly when
the valve reaches the closed position.
Make sure that the valve has reached the
end position by watching the position indi-
cator in the HMI on the electrical cabinet. If
there is no power, continue pumping for a
brief period after the pressure has risen.
5.3.3. To stop valve movement:
1.
Stop pumping and release the control
lever, if you want to stop valve movement.
2.
The valve stops at its current position until
operation of the hand pump continues. *
* Hydraulic actuators, which are equipped with a
control block
Figure 7. Control push-pin nut
17
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