Thermo Scientific FOCUS GC, Инструкция по эксплуатации

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Chapter 15
Maintenance and Troubleshooting
Maintenance
260 Instruction Manual
Ferrules and Seals
Ferrules and seals should be replaced when they are too flat to produce a good
seal.
NOTE Unless required applications necessitate frequent dismantling and replacement of columns
and accessories, seals and ferrules normally need to be disturbed only when dismantling is
required. However, the FOCUS GC should be periodically leak-tested and the seal
tightened or replaced as necessary.
Traps
Internal and external traps in the gas line must be periodically serviced. It is
advisable to check the state of the traps every time gas cylinder is replaced..
Detector Unit
To ensure optimum performance of the detector, it must be kept clean and free
from dust and deposit. Symptoms such as reduced sensitivity, increased noise and
difficulty in flame ignition indicate that detector cleaning may be necessary
Make sure you not only perform each scheduled item, but that you record it as
well, along with any observation about instrument performance. Your records and
notes can be invaluable when trying to trace a service problem.In addition to the
routine and preventive maintenance that you perform, we recommend annual
inspections by Thermo Fisher Scientific customer service engineers. These yearly
checkups ensure that your instrument remains in peak condition.
Maintenance Schedule Table
.
Table 15-1. Standard Maintenance Schedule
Frequency Task
Daily Run Automatic Leak Test.
Run performance check standard as required by method.
Run calibration curve as required by method.
Note gas pressure when the weekly pressure check shows it to be
below 5000 kPa (50 bar or 750 psig).