MTS Model 506-62-72 Hydraulic Power Supply - Manual (Page 11)

Operation 2-3
2.2 Operation Procedures
This section provides the local and remote operating procedures for the
506.62/.72 Hydraulic Power Supply.
Warning
WARNING !
Do not start the HPS if the servovalve command is not equal to
feedback (that is, zero balanced).
Failure to do this can result in sudden actuator movement which may
cause injury to persons and/or damage to equipment.
Ensure that the system is at zero balance before starting the HPS.
Before you begin Make sure that the external hydraulic system is ready for operation.
N O T E The Dirty Filter indicator may light during a cold-
start. It should turn off when the HPS reaches its
normal operating temperature. If the indicator fails to
turn off, correct the condition (Subsection 3.1.1.2) and
press Reset.
Local operation 1. Turn the Source Remote/Local switch to Local.
2. Apply electrical power to the HPS (the Power indicator will
light).
3. Press Reset. 1
4. Momentarily turn the High/Low/Start switch to Start. When you
release the switch, it returns to Low.
5. Check the HPS and external hydraulic system for leaks and
unusual sounds.
6. Turn the High/Low/Start switch to High to apply high pressure.
7. Press Stop on the HPS front panel to stop the HPS and remove
output pressure.
1 Reset must be pressed whenever electrical power to the HPS has been interrupted.