Teledyne 402REU - Hydrocarbon analyzer - Manual (Page 35)

Total Hydrocarbon Analyzer Maintenance and Troubleshooting
5-1 Teledyne Analytical Instruments
Maintenance & Troubleshootin
WARNING: There are dnagerous high voltages within the in-
strument.
There are no user serviceable parts within the cover
on the inside of the door, inside the isothermal
chamber (sample system), and on the Electrometer-
Amplifier PC Board. Work in these areas shall only
be performed by authorized suitably trained person-
nel.
Before starting any of these maintenance and
troubleshooting procedure, whenever possible apply
procedures provided in
Section 1 Page VII: "PROCEDURE
FOR REMOVAL OF INTERNAL INACCESSIBLE SHOCK HAZ-
ARDS"
. When the 402R-EU must be turned on during
any of these maintenance and troubleshooting pro-
cedures, be carefull and work with the ONE HAND
RULE (SECTION 1, PAGE viII). After the need to have
the instrument turned on passes, apply procedure in
section , page VI and then proceed.
CAUTION: Many of the electrical parts within the 402R-EU are
susceptable to damage from the electrostatic
discharge. Therefore, ESD safe procedures shall
be followed during servicing of the 402R-EU.
If the analyzer is suspected of incorrect operation, always evaluate
performance with zero or span gas flowing in the sample path. Never
attempt to evaluate performance on sample gas. If analyzer sensitivity is
questionable, use the span gas. For all other evaluations, use the zero gas
and low range for maximum sensitivity. The important consideration is to
control as many variables as possible. Using cylinder-supplied gases of
known hydrocarbon content eliminates the possibility of introducing an
unknown variable.