9300015500 Rev. C 10 of 14 Pre-installation Instructions
A measured ground to neutral potential of greater than 3V ac or V dc indicates grounding
problems that may need correction. Evaluate any power source suspected of having noise
problems with a recording-type power line monitor before operating the system.
NOTE: If there is concern about the quality of the power, install an uninterrupted power supply,
or a power conditioner or both. The maximum power consumption is 3600 VA.
;
Check the checklist box: Specified electrical supply and power outlets are
installed.
Qualified Computer Equipment
If the Varian MS Workstation software is to be installed on a computer not purchased
from Varian, the customer is responsible to ensure that the computer is adequately
equipped and compatible with the operation of the data system and its communication
interfaces. Please check the current list of requirements, available at the following web
site.
http://www.varianinc.com/cgi-bin/nav?products/chrom/gcms/msws
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computer
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req
Varian does not guarantee the function of the Varian MS Workstation software on
computer hardware or operating systems that do not meet the specified requirements.
NOTE: Contact your Sales Representative for a list of qualified equipment or for more
information.
Gas Requirements
Nitrogen
A nitrogen gas supply that can provide up to a maximum of 20 L/min of gas regulated at 80 psi
is sufficient for vESI or APCI operation for one LC/MS. The nitrogen must be at least 99% pure
with less than 0.1 ppm hydrocarbons and less than 1% oxygen. It must be clean and dry with a
−40 °C dew point. Use a nitrogen generator, or liquid nitrogen boil-off to supply the nitrogen
gas. The Varian Warranty does not cover MS problems caused by poor gas quality. It is the
responsibility of the customer to conform to all regulations regarding the installation and
operation of the gas system. The nitrogen supply uses ¼ in. connectors.
;
Check the checklist box: Nitrogen gas (at least 99% pure), regulator, and gas
lines are installed.
Air
A compressed air gas supply, capable of providing up to 3 L/min of gas regulated to 80 psi with
a two-stage regulator, is required as a nebulizing gas for negative vESI. The customer is
responsible to conform to all regulations for the installation and operation of the gas system.
The air must be clean and dry, with less than 0.1 ppm total hydrocarbons, including methane,
and have a −40 °C dew point. The air supply uses ¼ in. connectors.
;
Check the checklist box: Air (less than 0.1 ppm hydrocarbons), regulator, and
gas lines are installed.
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