Instruction Manual
DPA-75 Air Hyd. Power Unit - V1.4
www.durapac.com
Page 5 of 10
4.2
Replace shipping plug (red) with air vent plug (black) before use.
4.3
Air Connection -
Remove plastic cap from the air inlet port on the end of the power
unit, connect suitable air supply to air input port. Air input port is designed to fit the
popular 1/4" NPT air nipple (not included). Ensure that your air source can dedicate 7.8
cfm @ 4-12 bar/60-175 psi to each power unit being operated.
Figure 1 – DPA-38 used for illustration purposes
4.4
Remove air from the power unit
– Air can accumulate in the hydraulic system during
the initial setup or after prolonged use, causing the cylinder to respond slowly or in an
unstable manner. Should removal of air from power unit be required, please follow the
steps in 6.2 – Bleeding Air from the System in the Maintenance Section.
4.5
Check all system fittings and connections to be sure they are tight and leak free.
4.6
Check oil level in reservoir before operating power unit.
5.0
Operation
IMPORTANT:
Always monitor pressure, load or position using suitable equipment. Pressure may be
monitored by means of an optional manifold and gauge. Load may be monitored by
means of a load cell and digital indicator. Correct application position can only be
determined by the operator of the equipment
Do NOT
operate a power unit that is disconnected from the application. If operated in
this condition, the hose and connections will become pressurised. This increases the
chance of a burst hazard. Damage may also occur to the power unit and its
components
5.1
To extend the cylinder, depress on the foot pedal marked "Pump" (horizontal portion)
until desired pressure, load or position is reached.
No load
Load
DPA-75
S/A
3/8"-NPTF
7,550
700
1,075
150
4-12
17.4
Air Pressure
Range (bar)
Weight
(kg)
Model
Number
Used
with
Cylinder
Oil Port
Thread
Usable Oil
Capacity
(cc)
Pressure
Rating
(bar)
Output Flow Rate
(cm
3
/min)
