MTS Model 512-01 Hydraulic Power Unit - Manual (Page 17)

Model 512.01 Hydraulic Power Unit Operation 17
Operation
The following procedure is a guideline, and it assumes you are starting the
hydraulic power unit (HPU) after it has been turned off for some time (the
hydraulic fluid is considered cool). You may want to incorporate portions
of this procedure into your system startup sequence.
1. Check the fluid level in the sight gage. The hydraulic fluid should be
close to the top of the sight glass. If you need to add fluid, add 1 liter
(1 quart) at a time.
Check the Fluid Level
2. At your test controller, make sure hydraulic pressure is turned off.
NOTE Some controllers can remotely control the HPU. The Model 512.01
Hydraulic Power Unit does not support this feature.
3. Turn the Start button turn the HPU on and wait for the motor to get
up to speed.
4. Check the output pressure for the correct output pressure. Pressure is
factory set for 6.9 MPa (1000 psi).
If the pressure is higher or you want to reduce the pressure setting,
see
“Adjusting the Output Pressure” on page 23.
After the output pressure is achieved, turn on the hydraulic pressure at
the controller.
Normal Level
No Fluid Visible