Grain Systems PNEG-1798 - Manual (Page 28)

7. Procedure
28 PNEG-1798 Tower and T-Series Dryers Vaporizer
7.4.27. Remove the pressure from the vaporizer loop by disconnecting the nitrogen supply hose
from the 3/4" manual isolation valve and then slowly opening the valve that has been closed
since
Step 7.4.21 on Page 27 . The test gauge should indicate 0 PSIG when the pressure has
been vented.
7.4.28. Close the manual 3/4" liquid line valve and remove any fittings that remain after the nitrogen hose
was removed in Step 7.4.27 . Record this action on the data sheet.
7.4.29. Remove the 0-300 PSIG test gauge and any fittings installed in the 2" x 1" reducer fitting. Record
this action on the data sheet.
7.4.30. Remove the 3 prong 120V AC power cord from the receptacle and then disconnect the wires that
were connected to the ASCO 3/4" liquid line solenoid leads. Record this action on the data sheet.
7.4.31. If applicable, re-connect the solenoid lead wires exactly as they were found to the field wires that
were disconnected from the ASCO 3/4" liquid line solenoid in Step 7.4.6 on Page 26 . Record this
action on the data sheet.
7.4.32. Remove the high pressure hose and the regulator from the nitrogen cylinder and replace the
protective cap over the cylinder’s valve. Record this action on the data sheet.
7.4.33. Connect the vaporizer 2" female fitting to the system’s high pressure regulator’s inlet side at the
2" nipple. Verify this connection is as tight as possible. Record this action on the data sheet.
7.4.34. Verify all parts of the data sheet have been completed and signed. Copies of the data sheet
should be sent to the GSI project manager for their record keeping.