MTS Model 506-62-72 Hydraulic Power Supply - Manual (Page 10)

2-2 Operation
Table 2-1. Controls and Indicators
Item Control/Indicator Description
1 Power indicator* The Power indicator lights to indicate that electrical power is
applied to the HPS.
2 Spch Pump
Auto/Run/Start
switch
To operate the supercharge pump when the main pump is not
operating, turn this spring-loaded switch to Start. After the
switch is released, it returns to the Run position — indicating
that the supercharge pump is circulating hydraulic fluid through
the heat exchanger and fine filter. If the switch is in the Auto
position, the HPS can be controlled by either the High/
Low
/Start switch or the optional remote control panel.
3 Source Remote /Local
switch
If this two-position switch is in the Local position, you can
operate the HPS with the front panel controls. If it is in the
Remote
position, use a remote control device to operate the HPS.
4 Main Pump
High
/Low/Start switch
To apply low pressure in local control, turn this spring-loaded
switch to Start. After the switch is released, it returns to the
Low
position — indicating low pressure operation. Turn the
switch to High to select high pressure.
5 Low Fluid Level
indicator* When this indicator lights, the hydraulic fluid level has
dropped below a preset value.
6 Fluid Over-Temperature
indicator* When this indicator lights, hydraulic fluid temperature has
exceeded a preset value.
7 Dirty Filter indicator* When this indicator lights, the low-pressure filter needs
replacement. See Subsection 3.1.1.
8 Hours of Operation
meter This front panel meter indicates the total operating hours of the
pump.
9 Stop switch When Stop is pressed (in either local and remote control), the
HPS output first ramps to low pressure and then goes to zero
pressure. The supercharge pump continues to run for
approximately 10 seconds.
10 Reset switch This switch resets the interlock circuit if the condition causing
the interlock has been corrected.
11 Emergency Stop switch This switch operates in both local and remote control and is used
during emergency situations only. When pressed, it immediately
shuts down the HPS (the supercharge pump may continue to run
briefly to supply the main pump until they fully stop).
12 Fluid level gage This gage indicates the level of hydraulic fluid in the reservoir.
13 Temperature gage This gage indicates the temperature of the hydraulic fluid in the
HPS reservoir.
* Indicators are "push-to-test" type indicators. This means that if you push the indicator, it will light. If it does not light, the
bulb is burned out.