CHART TRIFECTA 2K, Руководство по обслуживанию

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Trifecta 2K
C
OMMISSIONING
10
✦
It is important that the system be purged with warm, dry nitrogen
before running the system with liquid. Water vapor can cause ice crystals
to form that may cause the solenoid valves to operate improperly.
(1) Install the Trifecta unit as close to the bulk tank as possible to keep the supply runs short.
(2) Be sure to use the liquid supply line from the bulk tank. (The gas use line is not an
acceptable line for supply.)
(3) Be sure a 100-mesh strainer was used in the supply line to the Trifecta unit. Check to see if
the supply line is large (1-inch (2.54 cm) type K copper is acceptable) up to the stub on the
Trifecta unit. The bulk tank pressure transmitter should be tapped into the gas phase line of the
bulk tank liquid level gauge (
3
/
8
” (.95cm) line should be used). Other gas lines are not
acceptable.
(4) If the Trifecta is installed in an area where ice and snow could build up, the skid should be
raised approximately 6 inches (15.24 cm) with blocks to help aid in airflow to the vaporizer.
(5) The power supply needs to be a dedicated power supply for the Trifecta only.
(6) Be sure the free standing vaporizer is properly installed with a 550 psi (37.92 bar) relief
valve on the gas side. (It is also helpful if an additional valve is added after the vaporizer for
draining or testing of the system. It also can be used as a liquid cylinder emergency supply port if
needed.) Be sure the vaporizer has a maximum working pressure of at least 550 psig (37.92 bar).
(7) On initial start-up prior to powering the unit, manually open all the solenoid valves by
turning the red-hand wheels on the solenoid valves clockwise. This will allow you to purge the
system prior to liquid fill. Purge the system by slightly opening the bulk tank supply valve and
allow liquid to enter the system and vaporize. Try to control the liquid flow to the point that all
the liquid vaporizes. When you feel that the system has been purged adequately, close all the
solenoid hand wheels by turning them counter-clockwise.
(8) Manually add about 8 to 10 inches (20.3-25.4 cm) of liquid to each cylinder. This can be
accomplished by opening the bulk tank liquid supply valve. The cylinders will equalize with the bulk
tank pressure. You can then manually open the vent to atmosphere solenoid valve for the cylinder you
wish to fill and the cylinder will begin manually filling. Stop each at 8 to 10 inches (20.3-25.4 cm).
(9) After all the piping thaws out, a complete bubble test should be done on the system and any
leaks should be repaired. If increased pressure is desired for testing the pressure build, solenoids
can be manually opened and closed to accomplish this. Special care should be taken to make
sure the vaporizer system is pressurized.