Bosch ETT 008.31, Инструкции по ремонту

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2
Contents: Page
1. Important information 4
1.1 Compulsory calibration 4
2. Servicing the analyzer 4
2.1 Half-yearly service 4
2.2 Yearly service 4
2.3 Test equipment for customer service 5
2.4 Test gases for customer service 5
(with manufacturer's certificate) 5
3. Brief description of appliance function 6
3.1 Serial interface 6
3.2 Analyzer part (measurement of CO, HC and CO
2
) 6
3.3 System adjustment 6
3.4 Self-test 6
3.5 Fine-tuning (HC, CO and CO
2
measuring channels) 6
3.6 O
2
measuring channel (optional) 6
3.7 Correction of pressure influence 6
3.8 Compensation of temperature influence 7
3.9 Engine-speed measurement 7
3.10 Oil-temperature measurement (optional) 7
3.11 Lambda measurement 7
3.12 Corrected CO concentration (CO
vrai
) 7
3.13 Parameterization 7
3.14 Filtration 7
4. Extended operating functions 8
4.1 Input mode ( switch S 60 at position 0,
auxiliary functions)
9
4.1.1 Leak test 10
4.1.2 Lambda measurement ON / OFF 11
4.1.3 O
2
measurement ON / OFF 11
4.1.4 CO correction CO
vrai
ON / OFF 12
4.1.5 Summer time ON / OFF 12
4.1.6 Air-pressure gauge ON / OFF 13
4.1.7 Entering the altitude 13
4.1.8 Fine-tuning the zero of O
2
(up to software version A 10) 13
4.1.8 Fine-tuning the zero of O
2
(from software version A 13) 14
4.1.9 Adjusting the pump capacity 14
4.1.10 Analysis mode 14
4.1.11 Selecting a printer 15
4.1.12 Selecting the operator terminal 15
4.1.13 Temperature compensation 15
4.1.13.1 Error messages regarding temperature
compensation
16
4.1.14 External display ON / OFF (optional, variant
for Sweden only)
16
4.1.15 Selecting analog interface (optional) 16
4.2 Test mode ( switch S 60 at position 0) 17
4.3 Fine-tuning mode (switch S 60 at position 1,
mean values, air-pressure gauge and
chopper motor recognition)
19
4.4 Fine-tuning mode (switch S 60 at position 2,
upper range values, activation of temperature
compensation and setting appropriate version
for country of use)
20
5 Function test 21
5.1 Visual inspection (device is switched off and
disconnected from mains)
21
5.2 Checking the external gas duct 21
5.3 Checking the protective earth 21
Contents: Page
5.4 Checking the start-up process 22
5.5 Checking the ”Analysis” function 23
5.6 Checking fault monitoring 24
5.7 Performing the leak test 24
6 Checking and fine-tuning measuring accuracy 25
6.1 Taking account of barometric altitude 25
6.2 Checking the indicating accuracy 25
6.3 Fine-tuning the indicating accuracy 26
6.4 Checking cross sensitivity 27
6.5 Fine-tuning the air-pressure gauge 28
6.6 Recognition of chopper motor 30
6.7 Procedure for setting appropriate version
for country of use
30
7 Error messages / malfunctions 31
7.1 Error messages in the CO display field 31
7.2 Error messages in the CO
2
display field 32
7.3 Symbolic error messages 33
7.4 Other malfunctions 34
8 Trouble-shooting 34
8.1 Leakage faults 34
8.2 Flow faults (with zero-gas and test-gas flow) 34
8.2.1 Checking for an obstruction 35
8.2.2 Checking the pressure switches 35
8.2.3 Checking air-tightness 36
8.2.4 Checking the pump delivery rate 37
8.3 Indicating faults 38
8.4 RAM check error 39
8.5 Faulty channel identification 40
8.6 Faulty temperature compensation 40
8.7 Faulty channel amplifier 41
8.8 Faulty sensor board identification 43
8.9 Faulty pressure-influence correction
(faulty altitude setting or air-pressure gauge)
43
8.10 Faulty engine-speed measuring channel 44
8.11 Faulty oil-temperature measuring channel 45
8.12 Faulty O
2
measuring channel 45
8.13 Supply-voltage alarm 46
8.14 Faulty pump actuation 46
8.15 Checking the sensor board 46
8.15.1 Checking the power supply 46
8.15.2 Checking the ”SELECT”,”ENTER
o
”
and ”TEST
u
” non-locking switches 46
8.15.3 Checking function of switch S60 47
8.15.4 Circuit diagram of sensor board 47
8.15.5 Sensor board, component location diagram 48
8.16 Power supply to power electronics 49
8.17 Power supply to motherboard 50
8.17.1 Motherboard, component location diagram 51
9 Functions of the serial interface 52
9.1 Technical data of serial interface V24 52
9.2 Operating the pocket keyboard 52
9.2.1 Basic command structure 52
9.2.2 Selecting ”Language” 53
9.2.3 Entries in the ”Name field” 53
9.2.4 Entering the date/time 54
10. Repair work 55
10.1 Replacing the lamp 55
10.2 Cleaning the lamp reflector 55
10.3 Replacing a receiver chamber 55
10.4 Cleaning the analyzer part 56