4
3.4.7 Cleaning of joints etc. ......................................................................................... 23
3.4.8 Procedure for lowering blank value of collector tube .......................................... 24
3.4.9 Adjustment of optical system .............................................................................. 25
4. REMOVAL AND FIXING PROCEDURES FOR EACH UNIT .......................................... 26
4.1 Collector tube adapter ............................................................................................... 26
4.2 Heater H1 .................................................................................................................. 26
4.3 Heater H2 .................................................................................................................. 28
4.4 Gas washing bottle and dehumidifying bottle ............................................................ 28
4.5 Cell ............................................................................................................................ 28
4.6 Optical system unit .................................................................................................... 29
4.7 Mercury lamp ............................................................................................................ 30
4.8 Phototube preamplifier .............................................................................................. 32
4.9 Second collector tube ................................................................................................ 32
4.10 Solenoid valve and activated carbon filter ............................................................... 33
4.11 Flow sensor ............................................................................................................. 34
4.12 Air pump .................................................................................................................. 34
4.13 Each control board .................................................................................................. 35
4.14 Switching power supply ........................................................................................... 36
