MTS Model 512-04 Hydraulic Power Unit User Manual
Page 18
Model 512.04 Hydraulic Power Unit
18
Operation
3.
At your test controller, make sure hydraulic pressure is turned off.
NOTE
Some controllers can remotely control the HPU. The Model 512.04
Hydraulic Power Unit does not support this feature.
4.
Turn the start switch to
START/LOW PRESS. and wait for the motor to
get up to speed.
Turn this switch to HIGH PRESS.
5.
Check to make sure the filter change gage’s needle stays in the green
zone.
NOTE
Cold fluid may push it temporarily into the red zone.
Turn the HPU off and change its filter if the needle stays in the yellow
or red zones.
Do not run the HPU if the filter gage is in the red region.
When the gage needle stays in the red zone, some hydraulic fluid is
bypassing the filter. This unfiltered fluid can wear or damage hydraulic
components.
Turn the HPU off when the filter gage reaches the red zone and change the
filter.
Check the Filter Change Gage
6.
Check the output pressure gage for the correct output pressure. The
pressure is factory set for 13.8 MPa (2000 psi).
START
LOW
PRESS.
HIGH
PRESS.
START
LOW
PRESS.
HIGH
PRESS.
CAUTION
Green Zone
(normal)
Yellow Zone
(warning to change)
Red Zone
(do not operate)