MTS Hydraulic Power Unit Model 506-92 - Manual (Page 12)

Operation 2-4
Remote Operation
remote control
connector
VW-G045A
1. Turn the Source Remote/Local switch to Remote. Make sure that
the remote control cable is connected to the cable connector (the
figure on the left shows the location of this connector) and to the
remote control device.
2. Apply electrical power.
3. Press Reset (must be pressed whenever electrical power to the HPS
has been interrupted).
4. Use the remote control device to start the HPU at low pressure.
5. Check for leaks and unusual sounds.
6. Select high pressure at the remote control device.
7. Use the Off switch on the remote control device to stop the HPU
and remove output pressure.
2.3 Supercharge Pump Operation
When to use the
supercharge pump When the temperature of the hydraulic fluid in the HPU reservoir exceeds
140˚F (60˚C), the fluid over-temperature switch automatically shuts down
the HPU. The HPU main pumps cannot be restarted in local or remote
until the hydraulic fluid cools.
Cooling procedure The following procedure uses the supercharge pump to hasten the cooling
of the hydraulic fluid:
1. Ensure the water supply to the heat exchanger is turned on.
2. Press the Start switch without pump motor 1 or 2 selected. The
supercharge pump operates independently of the main pumps and
circulates hydraulic fluid through the heat exchanger to cool the
fluid.
3. When the temperature gage reads approximately 130˚F (54˚C), press
the Stop switch to turn off the supercharge pump.
4. To restart the HPU, first press the Reset control on the local or remote
control panel to clear the hydraulic interlock circuit, and then start
the HPU in low pressure.