MTS Multi-Pump Control Manager Remote Human-Machine Interface - Manual (Page 29)

Operating the HPU Remotely
Remote Human Machine Interface Operation 27
Operating the HPU Remotely
The HPU can be operated locally using the controls on the HPU HMI panel or
remotely using the RHMI or system controller. This section describes remote
operation using the RHMI. The RHMI must be connected to the HPU.
1. Make a general inspection of the HPU. Ensure that all cooling water valves
are open. Ensure the Emergency Stop button is released.
2. If not already displayed, press the Main button to display the Main screen.
3. Verify that the Remote Operation button is green. If the button is not green,
press the button to change it to green (indicating remote mode).
4. Verify that at least one pump is enabled. Enable additional pumps as
necessary.
5. Start the HPU in low pressure at the RHMI.
6. Check the HPU for leaks and unusual sounds. Stop the HPU immediately if
leaks or unusual sounds are noted. Determine the cause and fix the problem
before restarting the HPU.
7. Select high pressure at the RHMI.
Note If the HPU generates an interlock during operation (low fluid level or high
temperature), the HPU will be stopped. Once the cause has been
corrected, press the Reset button on the HPU user interface before
restarting.
8. Run the HPU for about 30 minutes or until the hydraulic fluid is up to
operating temperature [typically 43–49°C (110–120°F)] before using your
test system.
9. Stop the HPU with the controller.
Recovering From an Interlock
This section describes how to reset each type of HPU interlock. If a fault occurs
(Low Level, Over temperature, Dirty Filter), the HPU will not start. You must
determine the source of the interlock and correct the cause before using the HPU.
If the Main screen is selected, the presence of a fault condition is evident by one
of the fault or alarm indicators and a blue Status indicator. Other indicators can
be lit depending on the interlock.
Click on the Status button to display the Status screen and identify the fault
conditions.
Hyd fluid low level
A low fluid level interlock is indicated on the Main screen by a red Faulted
indicator, a red Oil Level indicator, and a blue Status indicator. The interlock is
generated when the hydraulic fluid falls below the setting of the low level switch
mounted through the top of the reservoir. Perform the following steps to correct a
low level interlock:
1. Determine the cause for the low fluid level and correct it.