Emerson Rosemount 700XA, Reference Manual

Page: 275 / 294

E Shipping and long-term storage
recommendations
For applications equipped with special columns, such as mole sieve, read and follow the
additional instructions shipped with the analyzer and/or column set first. If you need
another copy, please contact customer service.
The following recommendations should be followed:
• For shipping purposes the gas chromatograph should be secured to a wooden pallet,
maintained in a vertical position and enclosed in a wood framework.
• Auxiliary equipment such as sample probes may be stored in the packaging in which it
was shipped. If this packaging material is no longer available, secure the equipment to
prevent excessive shaking and protect the accessories in a water proof enclosure.
• The gas chromatograph should be stored in a sheltered environment that is
temperature controlled between -30 °C (-22 °F) and 60 °C (140 °F) to keep the gas
chromatograph’s protective coatings from deteriorating from exposure to rain or
caustic or corrosive environments. Humidity in the sheltered environment should be
non-condensing. Be especially cautious of humidity if the conduit has been potted.
Temporary caps and desiccant may be necessary.
• The configuration of the analyzer may be retained through battery back-up on the CPU
for at least two years. If lost for some reason, a custom program for downloading the
appropriate GC application is included on the USB shipped with the system
documentation.
• If the gas chromatograph has been in operation, the system should be purged with
carrier gas before powering the gas chromatograph down, especially when heavy
hydrocarbons or components that tend to polymerize are present. Allowing the gas
chromatograph to perform a few analysis cycles without sample gas is an acceptable
method of purging the system.
Note
To expedite the purge process, you may use 30 psig of a dry inert gas, such as nitrogen
or helium.
Monitor the results and halt the analyzer after component values fall to 0 or after peaks
are significantly reduced in size. Save a copy of the diagnostic data under Tools
→
Save
Diagnostic Data
; once the file has been saved to a local PC, USB, or hard drive, you may
remove power.
• After removing power from the GC, remove the purge gas and immediately cap all
inlets and vents, including the carrier drier. These vents and inlets should be capped
with the fittings that were in place when the GC shipped from the factory or with
Swagelok
®
caps (not provided). This will protect the columns and filters and should
result in a trouble-free start up when the unit is returned to service.
• The sample conditioning system vents and inlets should also be capped with the
fittings that were in place when the system shipped from the factory. Additionally, all
vents should be closed.
Reference Manual Shipping and long-term storage recommendations
2-3-9000-744 June 2022
Rosemount 700XA 275