CASTLE TSM-21 - Manual Override of Solenioids

2.3 Manual Override on Solenoids
The solenoids can be manually overridden to allow air flow to the cylinder while air is
attached to the machine. This can also be used to flush air through the solenoid to remove
any moisture or debris. The manual override buttons are located on the end of the solenoids
opposite of the air ports. See Fig 1a and 1b.
2.3.1 TO TEST SOLENOID FUNCTION AND FOR LEAKS:
1. Unplug the machine, but make sure air is attached.
2. From the rear access door, locate the stack of solenoids below the control box.
3. Depress the red button to allow air to flow through the solenoid to the cylinder to test for
function or listen for air leaks.
2.3.2 TO FLUSH THE SOLENOID:
1. Remove the air line out fitting and the exhaust muffler and press the override button for
several seconds. Air should flow through the solenoid. Reassemble and cut a test
pocket. See FIG. 1a and 1b.
Fig 1a
Fig 1b
Castle Inc
TSM-21 Diagnostic Manual Parker/Humphrey Solenoids
Page 8 of 67