Mea Hawk - Page 31

MEA INC
2600 American Lane | Elk Grove Village, IL 60007 | USA
T +1 847 766 9040 | F +1 847 350 1951
COMPLETE CONTROL
www.meaincorporated.com
MEA Incorporated | Hawk Actuator Instruction and Operation Manual
02/2018 31
7) Repeat steps 4 and 5 (exhausting of the relief valve, checking of the level indicator, and adding
fluid) until the level indicator no longer retracts after briefly opening the relief valve. At this point
the HPS is purged of air.
8) Power up the unit.
9) Using the HMI put the actuator into Manual mode and move the actuator to the opposite
direction of its current position (i.e. if the valve is closed, move it to the open position).
10) While the actuator is moving observe the fluid level indicator. When the fluid level indicator fully
retracts, stop running the actuator, add hydraulic fluid to the HPS fluid fill valve until the level
indicator fully extends again.
11) Continue to move the actuator in the same direction as in step 4 and repeat the process of
checking the fluid level indicator and adding fluid until the actuator moves completely to the
dead-end position.
12) Repeat steps 4 and 5, but now run the actuator in the opposite direction. Since a majority of the
required fluid was added during steps 4 and 5, running in this direction will require much less
additional fluid.
13) To verify that the actuator is completely filled with hydraulic fluid, move the actuator a full stroke
in each direction while observing the fluid level indicator. If at any time the indicator retracts
during travel add hydraulic fluid, as necessary, to fully extend the indicator again.
14) Once the actuator is completely filled, a small volume of hydraulic fluid needs to be bled off to
allow for thermal expansion. Place a container under the relief valve and relieve fluid until the
fluid level indicator retracts ¼” from the fully extended position. The container will catch
approximately 1 cubic inch of hydraulic fluid.
15) The actuator is now properly filled with hydraulic fluid.
16) If applicable, re-open the accumulator system shutoff ball valves.