3
Atmospheric Mercury Analyzer
Mercury WA-5A Service Manual
Table of contents
1. OUTLINE..........................................................................................................................5
1.1 Outline.........................................................................................................................5
1.2 Basic configuration of this instrument..........................................................................5
1.3 Component description of mercury analyzer...............................................................6
1.3.1 Front (inside of front cover)...................................................................................6
1.3.2 Rear......................................................................................................................7
1.3.3 Inside of top cover ................................................................................................8
1.3.4 Inside of right side cover.......................................................................................9
1.3.5 Inside of left side cover.......................................................................................10
1.4 Readers for whom this service manual is intended...................................................10
2. SAFETY..........................................................................................................................11
2.1 Meanings and explanations of symbols.....................................................................11
2.2 Cautions concerning installation................................................................................11
2.3 Cautions concerning maintenance............................................................................11
3. MAINTENANCE..............................................................................................................12
3.1 Inspection items........................................................................................................12
3.1.1 Daily inspection ..................................................................................................12
3.1.2 Yearly inspection.................................................................................................13
3.2 Errors and warnings..................................................................................................14
3.3 Troubleshooting.........................................................................................................17
3.3.1 Fall of sensitivity .................................................................................................17
3.3.2 Abnormal blank value .........................................................................................18
3.3.3 Abnormal rise in sensitivity .................................................................................18
3.4 Maintenance..............................................................................................................19
3.4.1 Checking of leak.................................................................................................19
3.4.2 Replacement of septum......................................................................................20
3.4.3 Cleaning of gas washing bottle and dehumidifying bottle...................................20
3.4.4 Removal and fixing of cover ...............................................................................21
3.4.5 Removal and fixing of collector tube (H2)...........................................................21
3.4.6 Cleaning of absorption cell .................................................................................22
