Safety Related Notes
Before working on this machine, perform lockout-tagout procedures per the rules of your plant. Determine the sources of energy on this machine – electrical, pneumatic and hydraulic – and release or vent sources of stored energy – electrical capacitors, air receivers, and hydraulic accumulators. Shut off sources of power – electrical, pneumatic and hydraulic. Safely block mechanical sources of energy such as loaded springs and loaded machine members, or safely position the machine members so they are unloaded and springs are not under tension. Beware of hot hydraulic fluid and hot surfaces which can cause burns. Never “crack a hydraulic or pneumatic fitting” to check for the presence of stored energy. Hydraulic fluid injection injuries, as well as injection injuries from many other fluids, are extremely serious and must be treated immediately by medical personnel familiar with this type of injury. Loss of body parts or death may result from improperly treated fluid injection injuries! Never use your hands to feel for a hydraulic leak! Review the schematics and think before proceeding to work on the machine to ensure you have made the machine safe to work on.
Component:
161.04
Description:
Pilot Operated Check Valve
Manufacturer:
Rexroth
Part Number:
SL30PA2-4X/
Stock Code:
Not Provided
Electrical Address:
Not Provided
Component Application:
When Directional Control Valve 302.05 either de-energized or is energized to the crossover flow pattern, the pilot port of this pilot operated check valve is vented and the check valve will prevent hydraulic fluid from exhausting from the rod end of the Back Up Changing cylinder on F1, preventing the cylinder from extending due to an external load. When Directional Control Valve 302.05 is energized to the parallel flow pattern, this check valve is piloted open and fluid may flow from the rod end of the cylinder to the B-port of Proportional Directional Control Valve 334.02.
