E1200 HT 260-3
3BFunctional Description
23.04.07
4-14
00401010_41087
4.4.2
Bubbler System
The bubbler (option) is used to produce process gases resp. to clean the process tube.
—
N
2
is fed into the bubbler as carrier gas where it is enriched with POCl
3
molecules
as process ingredient. O
2
is added to the mixture which is then fed into the heated
process tube. The mixture is used for a diffusion/doping process.
—
N
2
is fed into the bubbler as carrier gas where it is enriched with DCE molecules
for doping purposes. O
2
is added to the mixture which is then fed into the heated
process tube, where it ignites. Here the doping process takes place.
—
N
2
is fed into the bubbler as carrier gas where it is enriched with DCE molecules
for cleaning purposes. O
2
is added to the mixture which is then fed into the heated
process tube, where it ignites. The resulting gases clean the process tube.
A DCE switch is used to alternately connect a single bubbler with each stack of the
equipment. For additional information on the DCE switching, please refer to the
process technology documentation, see chapter 12.6 Information on Process
Technology, page 12-2.
For further information on the bubbler, please refer to the suppliers' document on the
bubbler, see chapter 12.10 Suppliers' Documents, page 12-4.
4.4.3
Flaring Unit
The flaring unit is installed if hydrogen is used in the process tube which cannot burn in
a defined way. The flaring unit is used in processes with pure hydrogen or forming gas
with a hydrogen amount > 4%.
The flaring unit (option) consists of two glow plugs and a 19" plug-in unit. The 19" plug-
in unit is located in the gas cabinet. It contains the voltage supply and the interface
towards the control computer. Depending on the type of process the glow plugs are
located in the gas discharge pipe in the gas cabinet or in the toxic gas exhaust.
4.4.4
Control Elements in the Door
The door contains parts of the control system among which are the CESAR control
computer, the temperature controller computer, the centrotherm machine safety (CMS),
the Ethernet hub connection, the VAC controller, pressure measuring systems and
fans.
Summary of Contents for E1200 HT 260-3
Page 1: ...Operating Instructions for Horizontal Furnace Equipment E1200 HT 260 3 Version 1 0 1_41087 11 ...
Page 2: ...E1200 HT 260 3 23 04 07 00401010_41087 ...
Page 4: ...E1200 HT 260 3 Document Information 23 04 07 00401010_41087 ...
Page 16: ...E1200 HT 260 3 Index 23 04 07 00401010_41087 ...
Page 18: ...E1200 HT 260 3 List of Figures 23 04 07 00401010_41087 ...
Page 20: ...E1200 HT 260 3 List of Tables 23 04 07 00401010_41087 ...
Page 26: ...E1200 HT 260 3 0BOperating Instruction Remarks 23 04 07 1 6 00401010_41087 ...
Page 34: ...E1200 HT 260 3 1BIntroduction 23 04 07 2 8 00401010_41087 ...
Page 50: ...E1200 HT 260 3 2BSafety 23 04 07 3 16 00401010_41087 ...
Page 78: ...E1200 HT 260 3 4BTransport 23 04 07 5 4 00401010_41087 ...
Page 180: ...E1200 HT 260 3 8BMaintenance 23 04 07 9 76 00401010_41087 ...
Page 228: ...E1200 HT 260 3 10BSpare and Wearing Parts 23 04 07 11 2 00401010_41087 ...