Carbolite EZS Series - Manual (Page 14)

E range
14 MF65-1.01 MF65-1.00
Fitting the optional insulating plugs and radiation shield
For optimum temperature uniformity insulating plugs or radiation shields should be placed in the
work tube ends as shown in
Figure 2-21 , Figure 2-20 and Figure 2-22 . With an extended work tube
the stem (8) of the insulation plug assembly lines up with the end of the work tube.
If a gas/vacuum end seal is fitted (4), either horizontally or vertically, the insulation plug hooks
onto the end seal hook; see
Figure 2-20 .
Alignment of radiation shields is similar to that of insulation plugs see Figure 2-22 .
If a metal work tube is being used in the furnace, ensure that it is earthed. See the safety warning
in section 3.5.
Index to numbered items in Figure 2-21 ,
Figure 2-20 and Figure 2-22
1. Extended work tube guard
2. Standard work tube
3. Extended work tube
4. Gas/vacuum end seal
5. Insulation plug for standard work tube
6. Insulation plug for extended work tube
7. Radiation shield for extended work tube
8. Insulation plug stem
Figure 2-20. Cross-section view showing extended work tube
insulation plug fitted. Figure 2-21. Cross-section view showing
standard length work tube insulation plug
fitted.
Figure 2-22. Cross-section view showing extended work tube
radiation shield fitted