Figure 5-1. Cleaning Or Replacing The Capillaries; Cleaning The Optics - Thermo Scientific 48i Instruction Manual

Preventive Maintenance
IR Source Replacement
Capillary (Yel/Blue)
IR Source
Replacement
Fan Filter Inspection
and Cleaning
5-4 Model 48i Trace Level-Enhanced Instruction Manual
Figure 5–1. Cleaning or Replacing the Capillaries
3. Remove purge capillary from capillary holder on rear panel and clean
with a wire smaller than 0.006-inch diameter/or replace.
4. Install the capillary by following the previous steps in reverse.
The IR source control system has been designed to operate the wire wound
resistor IR source conservatively in order to increase its life. Nevertheless,
the IR source does have a finite life. Since the IR source is relatively
inexpensive and easily replaced, it is recommended that the IR source be
replaced after one year of continuous use. This will prevent loss of data due
to IR source failure. If an IR source is to be replaced on an as needed basis,
it should be replaced when:
There is no light output
●
After cleaning the optics, the IR light intensities remain below 100000
●
Hz
It is not necessary to recalibrate the Model 48i Trace Level-Enhanced after
replacing the IR source since it is a ratio instrument, and replacing the IR
source does not affect the calibration.
Use the following procedure to inspect and clean the fan filter
2).
1. Remove the fan guard from the fan and remove the filter.
2. Flush the filter with warm water and let dry (a clean, oil-free purge will
help the drying process) or blow the filter clean with compressed air.
Capillary (Green)
Capillary Holder
Rear Panel
(Figure 5–
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