ELTRA ON-900 Service Manual

Oxygen / nitrogen / hydrogen determinators

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Operation manual (54 pages)

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Page 2 We would also appreciate any suggestions for supplements and improvements to this Service Manual. CAUTION ! Before opening this device, always unplug the main power ! © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 0.1-2...
Page 3: Table Of Contents
2.16 The furnace control board PW13................2.16-1 2.17 2.18 Sample drop motor and the motor switch adjustment ..........2.18-1 2.19 Hot extraction upgrade ....................2.18-1 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 0.1-3...
Page 4 Water and gas flow diagrams, analysis sequence .......... 4.3-1 Purging of the chopper .................. 4.4-1 Maintenance OH- 900, ON- 900 ..............4.5-1 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 0.1-4...
Page 5 ON21-32210 UNI 1.3+1.4 65 cm Water temp. 9 IR Temp. High O output signal 130 c m F urnace temp. High O auto zero signal Low O output signal UNI 1.3+1.4 Low O auto zero signal 6x 0.25² Overheat Water flow Shield 49 cm +24V 22ac...
Page 6 41 48 TP1 TP2 F C 2 1 D 9 - B u c h s e 4 7 µ © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 0.1-6...
Page 7 3 2 9 1 0 a d a p t e r Ordering numbers: 15264-Pump plate 15266-Pump 15268-Pump control board PC1 32910-Pump adapter © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 0.1-7...
Page 8 60513 60234 60522 72010 60552 60552 upwards downwards 60525 60500 60500 bl ue(L=3cm) 60566 green 60531 2,5bar 60566 60566 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 0.1-8...
Page 9 Asking for detectors, preamplifiers and boards without following this diagram, is useless. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.1-1...
Page 10 Theoretically, the circuit board IR21 may also be at issue. This is, however, very unlikely if more than one channel is not functioning in a multi-channel device. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.1-2...
Page 11 CAUTION : The thermistor is a small part inside of the glass ball, in the middle of the wire. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.1-3...
Page 12: No Gas Flow
A d j u s t F C 2 1 1 - 6 - E S e e 2 . 1 S e e 2 . 1 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.2-1...
Page 13: The Flow Rate Is Not Stable
( 1 ) into the furnace area to make sure that the hole is completely free. 1 - 3 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.3-1...
Page 14: The Base Line Of The Tc Cell Cannot Be Adjusted To Zero
If there is no fault, adjust the signal of the "high nitrogen ( hydrogen )" channel to zero manually, see 2 .12 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.4-1...
Page 15: Analysis Time Too Long
Check for gas leakage. If above functions are OK, it is possible to increase the comparator level by 100 units. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.5-1...
Page 16: High Blank Value
If the base line of the detectors is unstable due to insufficient mains voltage ( less than 200V AC ), connect a voltage stabilizer ( see 3.14 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.6-1...
Page 17: Erratic Results
Analyse a standard sample 5 times. The standard deviation should be better than 1% or ± 3 ppm, whichever is higher. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.7-1...
Page 18: The Led For The Temperature Regulation Of The Infrared Cell Or The Thermoconductivity Cell Does Not Flash
Check the wir ing see 4.2 than 6 kOhm R eplace the T H61 1- 1 4 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.8-1...
Page 19 One of the contact threads ( 2 ) could have failed, or one of the connections ( 3 ) could be disconnected. A look inside the plug ( 4 ) is recommended. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.8-2...
Page 20 The temperature's influence on the baseline of the TC cell is very high. Wait until the baseline is stable before analysing. Use a computer to check the baseline. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.8-3...
Page 21: No Analysis Start
START-button with furnace in open condition, ignore the stability of the baselines. Try this method if the analyser does not start with the closed furnace. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.9-1...
Page 22: The Message "No Water Flow" Appears On The Display
If necessary, change pump change pump Try spacing photo cells of the water flow Replace ON21 detector Replace ON21 1-10 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.10-1...
Page 23 CAUTION : By-passing the safety circuit can cause more damages! Analysing without a water flow can damage the furnace! © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.10-2...
Page 24 220VAC higher lower on TP13 on tap water <12VDC valve Replace water 1-11 Replace ON21 Replace ON21 temp. sensor © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.11-1...
Page 25 Caution By-passing the safety circuit can cause more damages. Analysing without sensing the furnace temperature can damage the furnace. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.11-2...
Page 26: The Base Line Of The Tc Cell Is Negative, See 2.12
Close the right side cover of the instrument Two minutes after this procedure the baseline should stay nearly at zero. Otherwise check the thermistors. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.12-1...
Page 27: No Furnace Power During The Analysis
1-13 Check the big fuses inside the analyser. Replace PW13, see 2.16. Check the wiring, see 4.2. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.13-1...
Page 28: The Sample Drop Motor Does Not Rotate
NK31 and GND test point of the electronic rack are connected (zero ohms between them) Replace the switch 1-14-1 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.14-1...
Page 29 2.18), furnace open / close ( see 4. 3 ) IC d: Furnace on / off ( see 1.13 2.16 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.15-1...
Page 30: Noise Or Drift Of The Infrared Baseline
3. 3 The power supply fluctuates, 3. 3 3. 4 The IR source is defective, 3. 2 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.16-1...
Page 31: Furnace Cut-Off During Analysis
Power transformer inside the analyser has been arranged for 400 V / 3 phase, but the mains is 220 V / single phase. Rearrange transformer accordingly, see 3.18 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.17-1...
Page 32: Beeper Responding
No or insufficient cooling water At request the beeper can be made to respond every time when an analysis is completed. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.18-1...
Page 33: Saved Data Is Lost
EPROM’s are the current values. Therefore, you should note any linearity factors that you enter via the keyboard, in case the accumulator gets empty. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.19-1...
Page 34 (3 ) G ra p hi te po wd e r (6 ) 12 - 0 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.20-1...
Page 35: 1.21 The Chopper Motor Doesn`t Rotate
© 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.21-1...
Page 36: 1.22 The Samples Make Bubbles
After using baskets of the previous quality, the problem was solved. Metal bubble Graphite crucible 12-1 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.22-1...
Page 37: 1.23 Spare Parts Kits
Copper oxide 100g 11062 Reagent tubes 160 x 16mm 21120 Quartz tube for purification furnace 15083 Gasflow meter 15 l/h © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.23-1...
Page 38 32210 Water temperature control board ON 21 77051 Thyristor block 01160 Purge solenoid valve 78055 Motor for sample drop © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.23-2...
Page 39 Micro switch 33440 Water level tank 09270 Gas pump 15115 Gas flow sensor 32450 Braid 77480 Clamps for water hose © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.23-3...
Page 40: 1.24 Unstable Current
Drive properly the big screws connecting the braids to the furnace and to the transformer (two screws for each braid). © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 1.24-1...
Page 41: Adjustments, Test And Function Explanation
Connect the multimeter between TP8 and TP3 ( GND ) of the FC 21. Range 20 VDC. Adjust 5.5 VDC with P2. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.1-1...
Page 42 The flow sensor, measured on TP1 of the FC 21, has an output voltage of about 5,2 VDC for an OH-900 ( 10 l/h ) and about 6,5 VDC for an ON-900 ( 15 l/h ), depending on the flow, but also, and especially, on the number of ranges ( IR-cells ) of the analyser.
Page 43 It can be measured on TP9 with a scope, however, this is not advisable for safety reasons. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.1-3...
Page 44 HCX M0 50D6H 1 5125 1 5210 Senk . M4x25 DIN 963 A2 M3x 6 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.1-4...
Page 45: Pressure Switch
If zero volts are measured when the pressure is at 1 bar ( 15 psi ), the screw ( 1 ) should be turned clockwise until the voltage goes to 24 V. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.2-1...
Page 46: Infrared Zero-Baseline, Control And Adjustment
( power switch on setting 1 ) for at least one hour, better would be two hours, and an oxygen flowed for about 10 to 15 minutes ( Power switch on setting 2 ). © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.3-1...
Page 47 ( measuring range 200 V DC ) Adjust 0 volts DC by adjusting the preamplifiers ( 16 / 17 ) © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.3-2...
Page 48 When reinstalling the infrared cell into the analyser, you must pay attention to the color markings of the tubes and their connections. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.3-3...
Page 49: Ir-Source Voltage Setting
If the voltage of C is too low, either the transformer is not correctly connected, or the rectifier R is out of order. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.4-1...
Page 50: Temperature Regulation Of The Ir-Cell
When the environmental temperature goes down, the heaters of the IR-cell need higher power to keep the temperature of the IR-cell constant. In this case the voltage will go higher. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.5-1...
Page 51 If the fault still remains, despite adjusting the TH 61, then check the board NR 32, according to the following instructions. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.5-2...
Page 52 If there is no voltage between 4 and 5, then the NR 32 is faulty. Replace it, according ■ The above sentences extend to the board TH61. From there they feed the heating elements. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.5-3...
Page 53 The modulated signal further drives and power stage of the NR 32 board; the power signal returns to the TH 61 board, from there it finally goes to the heater elements. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.5-4...
Page 54: Pneumatics For Furnace Lift
When the screw ( 7 ) for final upward travel is too tightly screwed, it can happen that the furnace doesn't close ( speed = zero ). © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.6-1...
Page 55: Flow Rates
Adjustment of the flow meter ( B ), 1 , 5 0 , 5 b a r 2 , 5 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.7-1...
Page 56: Furnace Lift Adjustment
Fasten the screws ( C ) again. 2 - 8 - 1 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.8-1...
Page 57: Linearization
If, after the test, the measurement results of the low standard sample are not correct, a new linearity factor is fed in and the test is repeated. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.9-1...
Page 58 11 ) < Nr > < New Factor > < Enter > 12 ) Repeat from # 1 ) © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.9-2...
Page 59: Balance Programming
The balance model BP61 has a switch to enable / disable the programming mode. The switch, when shifted to the left, disables the programming mode. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.10-1...
Page 61: Tc Zero Baseline Adjustment
Turn trimmer 2 in a central position Search with jumper 3 a value close to 0 Adjust exactly to 0 with trimmer 2 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.12-1...
Page 62: Diagnostic Printout
< Menu > < 3 > < 1 > < Enter > This report should be faxed to ELTRA if interpretation or further instructions are needed. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.13-1...
Page 63: Temperature Regulation Of The Tc Cell
Caution : The influence of the temperature on the baseline is very high. Wait for the stabilisation after every adjustment. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.14-1...
Page 64: Water Flow And Furnace Temperature Sensing Board On21
"LOW" if no VRef norm all y TP 6 water flow TP12 VRef Water T P9 flow sensor VRef 2- 15 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.15-1...
Page 65 At the same time the furnace power will be switched off, see also 1.11. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.15-2...
Page 66 ON 21. Only when the water is very dirty, then there will be a warning, even if the wheel is turning, see also 1.10. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.15-3...
Page 67: The Furnace Control Board Pw13
Start the analysis. Turn trimmer P1 during the outgas phase so that the ampere meter on the front panel shows 4A. This adjustment is only necessary in case the PW 13 has been replaced. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.16-1...
Page 68 +15V -15V P I N n o o f t h e D 2 5 p l u g +1 5V IC3 PIN4 1 5 V m e a n s p o w e r O F F FUSE 32A O V m e a n s p o w e r O N TP11 I C 4 o n 6 8 k...
Page 69 PW 13; and secondly, the thyristor control circuit is directly disabled by the ON 21. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.16-3...
Page 71: Sample Drop Motor And The Motor Switch Adjustment
The transistor, however, is no longer activated, so that the motor stops turning. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.18-1...
Page 72 T3 and T4 w ith the connected com ponents +15V are a separate circuit on the PW 13 -15V 1-14-3 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.18-2...
Page 73 1mm), by moving it to the left. It is important not to hear the „click“. Re-tighten the nuts ( 6 ). © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 2.18-1...
Page 74: Hot Extraction Upgrade
Fu rn ace Se t Poin t te mpe ra ture sw 0,75² 1 2 3 5 6 7 0,75² 0,75² gn/ ge gn /g e 0,75² TH43 0,75² 3 6 90 7 TP1 1 gn/ge TP12 36 97 5 TP10 2 51 90 230VAC...
Page 75: Ir-Paths, Cleaning And Replacing
If the plugs ( 17 ) of the pre-amplifiers ( 6 ) are to be replaced, see 2. 3 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.1-1...
Page 76 In reinstalling the infrared cell unit in the analyser, you must pay attention to the color markings of the tubes and their connections. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.1-2...
Page 77 Avoid moving the IR source back and forth, try placing it correctly the first time. After re-assembling the infrared cell, adjust according to 2. 3 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.2-1...
Page 78: Infrared Electronics
The IR21-circuit board is malfunctioning, when the correct signal can be measured at test point 1; while the signal at test point 6 cannot be adjusted to zero, see © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.3-1...
Page 79: Infrared Power Supply
The new power supply unit ( 1 ) is installed in the reverse order. 2. 4 It is suggested that adjustments are made according to © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.4-1...
Page 80 ). The heating wire is not very elastic, therefore do not move it back and forth, you rather should correctly position it the first time. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.5-1...
Page 81 3. 5 This is reassembled in the reverse order. After installing, the infrared cell should be adjusted, see 2. 3 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.5-1...
Page 82: Infrared Temperature Regulation
Remove the four nuts ( 3 ). Re-assemble in reverse order. Make adjusts to the unit according to 2. 5 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.6-1...
Page 83 The threads are of aluminium. Therefore, screw in the probes very lightly. 2. 5 After replacing the temperature sensor, adjust according to © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.6-2...
Page 84 2 -4 b a r 2 2p si 3 0 - 6 0p s i 34015 Carr ier Gas Helium Pressure switch © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.7-1...
Page 85: Replacing The Eproms
27 C512 card, follow the first drawing; otherwise follow the second drawing. EPROM EPROM 18060 1.4E EPROM EPROM 18065 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.8-1...
Page 86: Clearing Memory
Press the reset key ( 2 ) on the base plate of the electronic unit for at least 30 seconds Restore the unit to its original condition Recalibrate. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.9-1...
Page 87: Electronic Reset
Disconnect the cable ( 1 ) from the electronic unit for 10 seconds and plug back in. 1 80 65 3 - 9 Should the problem remain : 3. 9 " Clearing the memory " © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.10-1...
Page 88 2 x O + 2 x N nc,nc,nc,nc,28,nc Caution : The electronics unit takes notice of the new coding once the power is switched on. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.11-1...
Page 89 Connect also 5c with 28a for all above versions ( otherwise the ON versions will appear ). Caution : The electronics unit takes notice of the new coding once the power is switched on. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.11-2...
Page 90 5c with 28a ( change from N to H ). Caution : The electronics unit takes notice of the new coding once the power is switched on. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.11-3...
Page 91 IR path: oxygen high 05067: IR path: oxygen low 06005: Printed circuit board IR 21 06032: Infrared receiver with CO filter © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.12-1...
Page 92: Cleaning The Solenoid Valves
With the furnace closed and renewed oxygen pressure, check to ensure that the 3. 7 solenoid valve is sealed, see © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.13-1...
Page 93: Replacing The Flow Sensor
OH 9 0 0 f o r H YD R OG E N o n l y T C C E L L 0 4 0 0 7 Flow sensor 0 3 -1 4 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.14-1...
Page 94 Depending on the type of the instrument, the flow sensor may be found either inside the infrared rack, or inside the temperature conductivity rack ( see above drawings ). © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.14-2...
Page 95 Replace the flow sensor ( 6 ), re-install in reverse order. 2. 1 Finally adjust the flow rate ( see © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.14-3...
Page 96: Installing An Ac Power Stabilizer
220V to 240V. The secondary voltage should be about 20V higher than the primary voltage. For example Pr 220V / sec 240V or Pr 230V / sec 250V. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.15-1...
Page 97: Replacing The Gas Pump
Remove the four plastic rings ( 5 ) , remove the pump Reinstall pump in reverse order O U T ge /gn © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.16-1...
Page 98: Additional Safety Features For Furnace Pneumatics (Optional)
( 10 ), and the pressure regulator ( 11 ), the furnace piston will go up with a very low pressure ( no danger ), and finally it will close at full pressure. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.17-1...
Page 99 0 .2 b ar -3 psi blue 11492 3-16-1 11440 Both safety features can be combined, by means of the above upgrade circuit © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.17-2...
Page 100: 230V / 400 V Operation
The yellow / green cable is of course connected to earth Rearrange the connection of the power transformer, according to the following instructions: © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.18-1...
Page 101 Join the two resulting ends to the connector ( 2 ), according to the above drawing; in order to obtain a parallel connection of the two transformer coils. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.18-2...
Page 102: Upgrading Of Analysers With Electronic Rack For Using The New Windows Software
HF board, new upper furnace part with two oxygen inlets and modifications of the tubing and new flow sensor in the IR-cell. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.19-1...
Page 103 V7; V8 - ONH2000 gepr.: 23.02.2006 Polemitis Zeichnungs-Nr.: 25195 Mainstr. 85 Block 20 Be z.: g eändert am: D-41469 Neuss © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.20-1...
Page 104 N K 3 1 1 6 1 0 0 R C ~ Phase transformer w s / b r 2 2 0 V 18 V AC w s / b r Se c 18 V A C w s/b r b r / g r b l / w s w s / g n...
Page 105 22.02.2006 Polemitis Zeichnungs-Nr.: 25545 Mainstr. 85 Block 20 Bez.: geändert am: D-41469 Neuss © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.20-3...
Page 106 23.02.2006 Polemitis Zeichnungs-Nr.: 25562 Mainstr. 85 Block 20 Bez.: geändert am: D-41469 Neuss © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 3.20-4...
Page 107: Miscellaneous
Mains power switch 72010 70230 0 ,5 70230 b ar 72010 70210 b ar 78015 70230 20002 70210 8-1-ON © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.1-1...
Page 108 Infrared source ( emitter ) 70280 O - ring 70330 O - ring 75120 Spring 75130 Retaining washer 75190 Washer © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.1-2...
Page 109 Gas flow sensor 70330 O - ring 77510 Heaters for IR - cell 77423 Temperature sensor for IR - cell © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.1-3...
Page 110 06670 IRT zero adjustment board 06748 Infrared electronic board IR41(2channels) 06749 Infrared electronic board IR41(1channel) 15205 Gas flow sensor © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.1-4...
Page 111 Combustion chamber 77033 Circuit breaker 32A 31325 Sample drop mechanism 77051 Thyristor block 31331 Abdeckung Wasserkühlung 77140 HF-filter 250 V © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.1-5...
Page 112 Transformer 15037 Voltage stabiliser board NR32/IR version 15266 Gas pump 15268 Pump control board PC1 18467 Microcontroller board UNI © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.1-6...
Page 113 O - ring 70430 O - ring 31345 70435 O - ring 31360 31365 70405 31380 31220 31393 4-1-10 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.1-7...
Page 114 11442 11430 01160 Valve V4 11430 Valve V2 11435 Valve V3 25196 Valves V7 and V8(just for ONH-2000 analyser) © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.1-8...
Page 115 70435 O – ring 31246 90190 Graphite crucible 31250 90190 31360 31365 70405 31380 31220 31393 3 121 5 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.1-9...
Page 116 31325 72101 70410 70415 31331 71010 70425 31246 31250 90190 31360 72102 31365 70405 31380 31220 31393 06- 5 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.1-10...
Page 117 Support for motor bracket 33120 Tube for dust trap 77423 Temperature sensor 77460 Micro switch 78054 Motor for sample drop © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.1-11...
Page 118 Se tt ing 2 ON/OH-900, ONH-2000 Simplified wir ing diagram Pha se t r ansf or mer S e c Main s po we r sw itc h P r i 2 3 0 V 4 0 0 V N R3 2 F u r n a c e 1 5 0 3 8 p o w e r...
Page 119 ON21 32210 gn/ge Water flow valve bl ue 400V brow n yel l ow PW13 grey 0,75² Thyristor gree n 32066 oran ge block pi nk gn/ge bl ack vi ol ett whi t e Cooling fan 2,5² 2,5² 2,5² Pr i 2,5²...
Page 120 9. 3. 2001 Polemitis Zeichnungs-Nr.: 32195 Mainstr. 85 Block 20 Bez.: D-41469 Neuss geändert am: © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.2-3...
Page 121 5 x 0. 14² x25 c m sc r ee n ed ON900 Signal and control cable 32145-1 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.2-4...
Page 122 ON21-32210 32900 ON 90 0 Sig na l and c ont ro l ca bl e 32145/2 Wa te r te mp . 6 5 cm F ur na ce t em p. 13 0 cm 6 x 0 . 2 5 ² Overhe at Wat er f low 49 cm...
Page 123 32900 ON21-32210 65 cm Water temp. 9 IR Temp. ELECTRONIC rack High O output signal 130 cm Furnace temp. High O auto zero signal Low O output signal Low O auto zero signal 6x 0.25² Overheat Water flow +24V 22ac 49 cm +24V Shield...
Page 124 Phase transformer R C ~ w s / b r 2 2 0 V 1 8V AC w s / b r 18 V AC N K 3 1 16 1 00 ws/ br b r / g r b l / w s w s / g n +1 5 Pr i...
Page 125 , l e f t h a n d s i d e 3 2 1 7 6 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.2-8...
Page 126 I R T emper at ur e co nt rol Lo w N/ H TC S i gnal INP UT S T C S i gnal N/ H P ump O x yge n I R S i gnal (D et ec t or s ign als ) G as f low Low Ox yg en I R S i gnal...
Page 127 Analyser - PC grey yellow green brown wh ite shield CAUTION! Connect the shield on both connector frames. © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.2-10...
Page 128 AN AL Y SI S T I M E S O u tg a s cu r r e n t A n a l y si s cu r r e n t P u r g e va l ve O /N I n te g r a ti o n S a m p l e d r o p In t e g ra t i o n d e l a y ti m e...
Page 129 230 V A C 1~N 50/ 60H z ma x. 7500 W att s Tap water inlet Tap water drain 4-3-1 -0 © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.3-2...
Page 130 O N 9 0 0 G a s F l o w D i a g r a m O x y g e n a n d N i t r o g e n a n a l y z e r V a l i d f o r S e r i a l N u m b e r s f r o m 0 4 5 0 x x x x x x u p t o 0 7 2 4 x x x x x x 3 4 0 1 0 O U T...
Page 131 ON 900 G as Flow Diagram O U T Oxygen and Nitrogen analyzer 15l/h Valid f or Serial Numbers from 0725xxxxxx to 1000xxxxxx G a s p u m p g r e y ye l l o w M e as u r e Pu rg e y e l l o w TC C E L L...
Page 132 ON 90 0 Gas Fl ow D ia g ram Oxyg e n o nl y a na ly zer Va lid f or S eri a l N um be rs f ro m 0 4 50 xxx xxx u p t o 07 2 4x xxxxx 34 020 O U T Pu r ge...
Page 133 Carrier gas outlet 15 l / h Gas pump Pr ess ur e r eg ula tor 24 V DC Measure Purge 11 430 114 35 0 . 35 ba r/ 5 . 3p s i E le ct ro de 24 V DC imp uls e f ur na ce...
Page 134 O N 9 00 Ga s Flo w D i ag ra m N i tro g en o nl y an a lyz er Va li d f o r Se ria l N um b ers f ro m 0 4 50 xx xxxx u p to 0 72 4 xxxx xx 34 030 P u r ge M ea su r e...
Page 135 O N 900 Gas Fl ow D ia gram N itr ogen onl y analy z er O U T 15l/h Val id for Seri al Number s fr om 0725x x xx xx to 100 0xx xx x x G a s p u m p g r e y y e l l o w...
Page 136 O H 9 0 0 G a s F l o w D i a g r a m O x y g e n a n d H y d r o g e n a n a l y z e r V a l i d f o r S e r i a l N u m b e r s f r o m 0 4 5 0 x x x x x x u p t o 0 7 2 4 x x x x x x 3 4 0 4 0 O UT...
Page 137 O H 9 0 0 G a s F l o w D i a g r a m O x y g e n a n d H y d r o g e n a n a l y s e r O U T 15l/h V a l i d f o r S e r i a l N u m b e r s f r o m 0 7 2 5 x x x x x x t o 1 0 0 0 x x x x x x...
Page 138 O H 9 0 0 G a s F l o w D i a g r a m O x y g e n o n l y a n a l y z e r V a l i d f o r S e r i a l N u m b e r s f r o m 0 4 5 0 x x x x x x u p t o 7 2 4 x x x x x x 3 4 0 5 0 P ur ge Me a su r e...
Page 139 15 l / h M ea su re P ur ge Gas pump P ur ge Pr e ss u r e r eg u l at o r 5 0 l / h y el l o w 0 . 3 5 b ar / 5. 3p s i r e d b l a c k Ele c tr od e...
Page 140 O H 9 0 0 G a s F l o w D i a g r a m H y d r o g e n o n l y a n a l y z e r V a l i d f o r S e r i a l N u m b e r s f r o m 0 4 5 0 x x x x x x u p t o 0 7 2 4 x x x x x x 1 5 l/h P u rg e M e a s u re...
Page 141 O U T 15l/h G a s p u m p g r e y y e l l o w Pu r ge M e as u r e Pu rg e 5 0 l / h E lectr ode im puls e fur nace T C C el l...
Page 142 Gas flow diagrams valid for serial numbers from 1000xxxxxx © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.3-15...
Page 166 Reference flow outlet ONH-2000 0 1 1 6 0 Analysis mode 1 1 43 5 24V DC Carrier gas outlet ON-Operation 24V DC 1 5 l / h Gas pump yellow grey Me a sur e 2 5 1 9 5 yellow E le ctr ode i mpul se...
Page 167 Reference flow outlet ONH-2000 0 1 16 0 Analysis mode 1 1 4 35 24V DC Carrier gas outlet OH-Operation 24V DC 1 5 l / h Gas pump yellow grey Me as u re 2 51 9 5 230VAC yellow El e ctr od e im p ul se...
Page 168 Reference flow outlet ONH-2000 0 1 16 0 Purging mode 11 4 3 5 24V DC Carrier gas outlet ON-Operation 24V DC 1 5 l / h Gas pump yellow grey Pu r ge 2 5 19 5 yellow P u rg e El e ct ro d e i mp u ls e 24VDC...
Page 169 Reference flow outl et ONH-2000 01 160 Purging mode 1 14 35 24V DC Carrier gas outlet OH-Operation 24V DC 1 5 l / h Gas pump grey yellow P urg e 2 51 95 230VAC yellow P urge E le c tr o de i m pu ls e 24VDC f ur n ac e...
Page 170 Reference flow outlet ONH-2000 0 1 16 0 Gas saving mode 1 1 43 5 Carrier gas outlet ON-Operation 1 5 l / h Gas pump grey yellow Mea su re 25 1 95 yellow P ur ge El e ctro d e i mp u l se fu rn a ce 1 1 43 0...
Page 171 Reference flow outlet ONH-2000 01 16 0 Gas saving mode 1 14 3 5 Carri er gas outlet OH-Operation 1 5 l / h Gas pump yellow grey M e as ur e 2 51 95 230VAC yellow P urg e El e ctro d e imp u l se fu rn a ce...
Page 172 90F 6 14 011 60 114 35 24V DC Carrier gas outlet 24V DC 1 5 l / h Gas pump M e a s u r e El ec tr o de 24 VD C im p ul se fu rn ac e 11 430 5 0 l / h...
Page 173 9 0 F 6 1 4 0 1 1 6 0 1 1 4 3 5 24V DC Carrier gas outlet 24V DC 1 5 l / h Gas pump P u r g e P u r g e E lect r ode 2 4 V DC imp ulse...
Page 174 90F 6 14 0116 0 1 1435 24V DC Carrier gas outlet 24V DC 1 5 l / h Gas pump P u r g e E lec tr od e 24V D C i mp uls e f u rna ce 1143 0 5 0 l / h 1,5 b ar...
Page 175 9 0F 61 4 01 1 60 1 14 3 5 24V DC Carrier gas outlet 24V DC 1 5 l / h Gas pump M e a s u r e Ele c tr o d e 24 V D C imp u ls e f u rn a ce 1 1 43 0...
Page 176 9 0 F6 1 4 0 1 1 60 1 14 3 5 24V DC Carrier gas outlet 24V DC 1 5 l / h Gas pump P u r g e P u r g e El ectr o d e 2 4V D C i mp u lse fu r n a ce...
Page 177 90F 6 14 01 160 1 14 35 24V DC Carrier gas outlet 24V DC 1 5 l / h Gas pump E le c tr od e 2 4V D C im pu lse f u rn ac e 114 30 5 0 l / h 1 ,5 b a r...
Page 178 Carrier gas outlet 15 l / h Gas pump P r e ss ur e r egu la tor 24 V DC Measure 1 143 0 114 35 0. 3 5b ar / 5 . 3p s i E le ct r ode 24 V DC imp uls e f ur na ce...
Page 179 Carrier gas outlet 1 5 l /h Gas pump P r es s ur e r eg u lat o r 2 4V D C Purge 1 1 43 0 11 4 35 0 . 3 5b a r / 5 .3 p s i Purge El ect ro de 2 4V D C...
Page 180 Carrier gas outlet 1 5 l /h Gas pump P r es s u re r e gu l a t or 2 4V D C 1 14 3 0 11 4 35 0 . 3 5 ba r / 5 . 3p s i El e ctro de 2 4V D C im pu l se...
Page 181: Purging Of The Chopper
O - I N S T R U M E N T C e l l 4 - 4 - 1 I N L E T © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.4-1...
Page 182: Maintenance Oh- 900, On
Check the water temperature cut-off system ( see 2.15 Check the furnace temperature alarm ( see 2.15 Tighten the 96-pole plug © 2002 by ELTRA GmbH Germany – January 2002 – Service Manual OH 900 / ON 900 / ONH 2000 4.5-1...

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Oh-900 Onh-2000

ELTRA ON-900 Service Manual

1 Faults

2 Adjustments, Test and Function Explanation

3 Service

4 Miscellaneous

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