Component identification, Component identification 8 – MTS Model 512-01 Hydraulic Power Unit User Manual
Page 8
Model 512.01 Hydraulic Power Unit
8
Introduction
Component Identification
This table describes the components shown in the figure called
Component Descriptions
C
OMPONENT
D
ESCRIPTION
Filter
Provides 3–micron filtration to fluid returning to the reservoir (see
Low Fluid and
Overtemperature Sensor
Shuts the pump off if fluid becomes hotter than 55ºC (130ºF) or it detects
a low fluid level. See
“Reducing the Fluid Temperature”
on page 21 for more information.
Pump Motor
Drives a fixed displacement gear pump.
Jumper Plug
Allows the HPU to run. Either the jumper plug or an external
Emergency Stop
switch must be plugged into the control box before
the HPU can be started.
Control Box
Houses the electronic controls for the pump, including the start button,
stop button, reset button, and the thermal overloads.
Start Button
Turns the pump on. It produces an output of 6.9 MPa (1000 psi).
Stop Button
Turns the pump off.
Reset Button
Resets the thermal overloads of the HPU. See
Heat Exchanger
Cools the hydraulic fluid using an air cooled heat exchanger.
Fluid Thermometer
Displays the temperature of the hydraulic fluid.
Filter Change Gage
Shows when it is time to change the hydraulic filter. The gage is marked
with three zones: green, yellow, and blue.
Green—The filter is good to use.
Yellow—Change the filter soon.
Red—Do not run the HPU until you have replaced the hydraulic filter
element.
Pressure Gage
Shows the current output pressure from the HPU. The output pressure is
factory set to 6.9 MPa (1000 psi). See
“Adjusting the Output Pressure”
page 23 to change the output pressure.
Reservoir
Stores the hydraulic fluid. The reservoir has a 40 L (10 gal) capacity. It
includes a magnetic drain plug to help catch metal particles.
Sight Glass
Let’s you see the hydraulic fluid. You can quickly check the hydraulic
fluid’s temperature, level, and condition (by its color).