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ELTRA
Measuring Instruments
CS-2000
ELTRA CS-2000 Service Manual
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Faults
51
Fig
.
38
:
Microcontroller board TP9
NOTICE
W
hen software starts the generator, the v
oltage on the m
ultimeter should change
from 12VDC
to 0.5VDC. The ge
nerator is again OF
F when this volt
age goes again to 1
2VDC.
The drivers of the m
icrocontroller bo
ard are out of orde
r, when the com
bustion starts without
pressing F5 or cl
icking START
and when without "Analyzing" on t
he screen, there
is only 0,5V
DC or lower on T
P9 ( instead of 12
V DC ). Replace th
e electronic drivers
Fig
.
39
:
Microcontroller board TP13
50
52
Table of Contents
Table of Contents
3
Notes on Service Instructions
7
Explanations of the Safety Instructions
7
Discharging the Oscillator
8
Faults
12
Check Base Lines
12
Fluctuating Gas Flow
13
No Combustion
18
Induction Furnace Operation
18
Resistance Furnace Operation
27
Bad Combustion
27
Induction Furnace Operation
27
Resistance Furnace Operation
28
Furnace Does Not Close
30
Analysis Takes too Long
32
RF-Interference on the IR-Cell, or on the Electronic Units
33
Additional Reasons for Excessive Analysis Duration
34
One of the IR-Sources Is Unstable
34
The Power Voltage Sinks below 180 VAC
34
Development of Dust When Closing the Furnace
35
Erratic Results
35
The Results Are Always 0.0000% or 00.0Ppm
37
No Oxygen Flow
38
Induction Furnace Operation
38
Other Faults
39
Resistance Furnace Operation
39
IR-Cell Temperature Control Is out of Range
39
Breaker Turns off at the Beginning of Combustion
39
Breaker Turns off at the End of the Analysis
43
Dustcloud When Opening the Furnace
44
No or Low Oxygen Pressure
45
Waiting for Stability Message
47
Combustion Tube Breaks Frequently
48
Oxygen Pressure Falls When the Furnace Opens
49
Combustion Without Starting Analysis
50
Crucible or Boat Cracks or Melts
52
Induction Furnace
52
Resitance Furnace
52
Oxygen Pressure Goes up very Slowly
52
Pump Voltage too High
54
Resistance Furnace Takes too Long to Warm up
58
Negative Drift after Start
59
Resistance Furnace Completly Cold or too Hot
60
Fumes in the Resistance Furnace
61
Resistance Furnace Doesn`t Reach Full Temperature
62
Unstable Resistance Furnace Temperatur
62
Dust or Soot from the Resistance Furnace
63
Vibrations in Induction Furnace Mode
64
Analysis Cycle Stops too Early
64
Chopper Motor Doesn't Rotate
65
Sample Burns but no Peak on the Screen
65
IR Signal Does Not Come down to the Base Line at the End of Analysis
66
Adjustments
70
Gas Flow Controller-Adjustment and Jumper Settings
70
Flow Controller for Induction Furnace Operation
70
Flow Controller for Resistance Furnace Operation
73
Infrared Base Line Adjustments
75
Infrared Cell Modification - General Information
75
General Test Points
78
Test Points IR-Ranges
79
Base Line Adjustments
80
Infrared Cell Board Irc1.X Sections Assignment
80
Voltage of a Base Line Is too High (Higher than 9.5V)
81
IR Source Voltage Setting
83
Infrared Cell Temperature Regulation
84
Pneumatics
86
Pressure Regulation
90
Closing Cone Adjustment
92
Linearity Correction
93
Induction Generator Control
94
Resistance Furnace
96
Setting the Furnace Regulation Card TH 43 / TH
96
Furnace Regulation Board TH 43 / TH
97
Thermocouple Testing
98
Service
99
IR-Paths, Cleaning and Replacing
99
Infrared Electronics
100
Removing the IRC-Board
100
Changing the IR-Source
101
Chopper
102
Leak Checking
104
Solenoid Valves Cleaning
108
Flow Sensor Replacement
110
Gas Pump Replacement
111
Thermocouple Replacement
112
Gas Saving Mode
114
Gas Saving also for Resistance Furnace
115
Furnace Pneumatics - Additional Safety Features (Optional)
116
Halogen Trap - Installing
117
Miscellaneous
118
Ordering Numbers
118
Front Side
118
Left Hand Side
120
Right Hand Side
122
Induction Furnace
124
Furnace Cleaning
126
Oscillating Circuit
127
Infrared Cell
129
Chopper
131
Resistance Furnace
132
Oxygen Purifying Furnace
134
Dust Trap
135
Wiring Diagrams
137
Right Hand Side Power Wiring
137
Left Hand Side Power Wiring
138
Valve Wiring
139
Control Signal Wiring
140
IR-Current Supply, Old Version
141
IR-Cell Internal Signals
142
Amplitude Circle
143
Gas Flow Diagrams
144
Gas Flow for Induction Furnace When Furnace Is Closed
144
Gas Flow for Induction Furnace When Furnace Is Open
145
Gas Flow for Resistance Furnace
146
Valve Contolling
147
Spare Parts Kits
148
Common Spare Parts Kti for All Analysers
148
Spare Parts Kit for CS2000 (Including Spare Parts Kits CS800 and HTF540)
150
Maintenance
152
Approved Methodologies to Which Eltra Instruments Conform
153
Inorganic Materials (Metals)
153
Organic Materials (Oil, Coal, Foodstuffs)
154
Disposal
155
Index
156
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ELTRA CS-2000 Specifications
General
Brand
ELTRA
Model
CS-2000
Category
Measuring Instruments
Language
English
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