42/24-10 EN Rev. 9 Chapter 9: Inspection and Maintenance 9-9
Limas11: Thermal Link Replacement
When should a
thermal link be
replaced?
A defective thermal link will usually be indicated by an Insufficient Sample Cell
Temperature (T-Re.K) or Lamp Temperature (T-Re.L) error message (see “Status
Messages” section, page 10-11). In this case check the thermal link and replace as
necessary.
Step Action
1
Turn off the gas analyzer power supply.
Open the wall housing door or the 19-inch housing cover. 2
The sample cell and the lamp are hot (approx. 55/ 60 °C)!
3 Disconnect the thermal link from the sample cell 1 and/or the lamp 2.
4 Release the spring clips and/or retainer and pull the thermal link from
the opening.
5 Check the continuity of the thermal link; if necessary, insert a new
thermal link (part number 0745836) in the opening and secure it with
the spring clips and/or retainer.
6 Connect the thermal link.
Close the system housing. 7
Light penetration during operation leads to erroneous measure-
ment values and measurement range overflows (“Intensity”
status message).
Thermal Link
Replacement
(see Figure 9-5)
8 Turn on the gas analyzer power supply.
Figure 9-5
Thermal Links in the
Li ma s11 A na lyz er
Module
1 Sample cell thermal link
2 Lamp thermal link
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