MTS Model 512-04 Hydraulic Power Unit - Manual (Page 17)

Model 512.04 Hydraulic Power Unit Operation 17
Operation
The following procedure is a guideline, and it assumes you are starting the
hydraulic power unit (HPU) after the 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. If your HPS is water cooled, make sure its heat exchanger’s water
valves are open.
Open the Exchanger’s Valves
Normal Level
No Fluid Visible
Open Open
Water
(Out)
Water
(In)