MTS Series 505G2 SilentFlo Hydraulic Power Unit Model 505G2-180 - Manual (Page 67)

2. Select Module #_ Enabled for the first pump module to be adjusted.
Select Enable Module # for all the other pumps modules.
3. Press Run to start the HPU in low pressure. Ensure that there are no flow demands by the system. Run
the pump in this mode until the hydraulic fluid is at normal operating temperature.
4. Press the High Pressure button to select high pressure mode.
5. Loosen the nut securing the output pressure control.
6. While an assistant monitors the Hydraulic Fluid Pressure on the Main screen, adjust the output pressure
as follows until the desired pressure is displayed.
• Turn the output pressure control clockwise to increase the pressure.
• Turn the output pressure control counterclockwise to decrease the pressure.
7. Hold the output pressure control to prevent it from moving and tighten the nut to secure it.
8. Check the Oil Pressure on the Main screen to ensure that the desired hydraulic pressure is being
maintained.
9. Select Module #_ Enabled for the next pump to be adjusted.
Select Enable Module #_ for the previously adjusted pump.
10. Repeat Steps 5 through 9 until all pumps have been adjusted to the desired pressure.
11. After the output pressure has been adjusted on all the pumps, enable the pumps you want operational for
testing.
Low/High Pressure Functionality
This section clarifies the low and high pressure functionality of the HPU. There are certain cases where it is
advantageous to use the HPU in low pressure versus high pressure. Low/High functionality is illustrated in
the block diagram below:
Series 505G2 SilentFlo™ Hydraulic Power Unit Product Information 67
Operation