1. Field Equipment Maintenance  Multimeter Use & Distribution  Introduction of Equipment and Parts  “Hands-On” Equipment Troubleshooting  Options and Discussion of Power Sources

2. Multimeter  Use to verify power AC/DC  Check fuses for continuity  DC backup voltage  E.R voltage  Hybrid battery voltage

3. Aerochem Metrics wet/dry collector Troubleshooting and Maintenance Appendix C

4. Pictorial Guide to Parts Part NumberName 1sensor unit 2collector frame 3sensor screws 4sample bucket holder 5sensor grid 6sensor plate

5. Pictorial Guide to Parts Part NumberName 7 Motorbox screws 8 Sampling bucket holder screws 9 Motorbox unit 10 Clutch arm unit 11 Clutch arm machine bolt 12 Counterweight 13 Waldes ring 14 Push rod 15 Counter weight rod 16 Lid drive arms 17 Lid tension springs 18 110V AC power cord 19 Event recorder terminal 20 Sensor unit socket 33Silver drive arm

6. Pictorial Guide to Parts Part Number Name 7motor box screws 10clutch arm unit 18110V AC power cord 19event recorder terminal 20sensor unit socket 2112V DC power lugs 2212V DC circuit fuse 23110V AC circuit fuse 24event recorder circuit fuse

7. Pictorial Guide to Parts Part NumberName 25Motorbox stop switches 26E.R./wet mode heater switch 27Drive motor switch 28Clutch tooth 29Thrust collar set screw 30Clutch tooth tension plate 31Switching magnets 32Clutch tooth tension spring

8. Sensor Problems Symptom Collector lid stays over the dry-side bucket long after precipitation stops, sensor dries slowly (more than 30 minutes for rain), motor not running. (If motor is running, see Clutch Unit - “What Goes Wrong”.) Collector lid oscillates non-stop between buckets, sensor wet or dry. Collector lid stays over wet-side bucket, sensor wet, motor not running. (If motor is running, see Clutch Units - “What Goes Wrong”.) See Flow Chart #1, page C-19 #5, page C-23 #6, page C-24

9. Sensor Problems Symptom Collector lid stays over dry side bucket, sensor dry, motor not running. (Again, if motor is running, see Collector lid stays over dry side bucket, sensor dry, motor not running. (Again, if motor is running, see Clutch Units - “What Goes Wrong”). Sensor plate (6) snow covered or iced up. See Flow Chart #4, page C-22 #3, page C-21

10. Motorbox Problems Symptom Collector lid stays over the dry-side bucket long after precipitation stops, sensor dries slowly (more than 30 minutes for rain), motor not running. If motor running, see Clutch Unit - Collector lid stays over wet-side bucket, sensor wet, motor not running. If running, see Clutch Unit - Collector lid stays over dry-side bucket, sensor dry, motor not running. If running, see Clutch Unit - Collector lid oscillates non-stop between buckets, sensor wet or dry. See Flow Chart #1, page C-19 #4, page C-24 #4, page C-22 #5, page C-23

11. Belfort Recording Raingage Troubleshooting and Maintenance Appendix D

12. Introduction  The Belfort recording raingage records positive increases in precipitation  Event Recorder shows openings/closings of collector

13. Pictorial Guide to Parts Part NumberName 1Catch Bucket 2 Zero Adjustment Screw(s) and Setting Bar 3 Limit Screw(s) 5 Precipitation Pen Arm 6 Mechanism Base 7 Pen Tip 8 Pen Shifter 9 Chart Drum With Clip 10 Bucket Platform 13 Clock 11 Top Lever 14 Pen Arm Stud 15 Event Recorder 16 Bucket Support Shaft

14. Pictorial Guide to Parts Part Number Name 2Zero adjustment screws and setting bar 3 Limit screws 4 Fine Linkage 6 Mechanism Base 7 Pen Tip 10 Bucket Platform 11Top Lever 12Dashpot 15 Event Recorder 16 Bucket Support Shaft

15. Pictorial Guide to Parts Part NumberName 17Top Cap 18Funnel 19E. R. Solenoid 20E. R. Pen and Arm 21E. R. Pivot Point 22 E. R. L-Bracket

16. Cleaning the Belfort After removing the “can”, compressed air or small paint brush can be used to remove debris. Gumout or other zero residue cleaner should be sprayed at each moving part or joint.

17. Cleaning the Belfort

18. Winterization  Remove evaporation shield  Add Antifreeze  Standard Automotive ethylene glycol  RV propylene gylcol  2 quarts = ~2.75”  Refresh as necessary

19. Summerization  Install evaporation shield  Remove Antifreeze  Dispose of Antifreeze properly

20. Lid seal change  Change annually or if damaged  Best to change on first Tuesday of the month  Clean after installation  Change wet side and dry side buckets

21. ACM Power Troubleshooting-DC 1. Power System 1.c.DC ONLY 1.d.DC Solar 1.Overall View 2.Cell/Regulator/Battery diagram 3.External Regulator Check 3.aBlocking Diode Check 3.b.Charge Control Check 1.e.Load Testing Batteries

22. DC ONLY ACM requires up to 180 AMPS/week (more in winter to provide ambient heater) Weekly battery changes needed

23. DC SolarOverall View +_+_ +_+_ +_+_ +_+_ +_+_ 12 volt Deep cycle battery system + _ Precipitation Collector External Regulator with blocking diode In-line 5A fuse holder and fuse

24. DC SolarCell/Regulator/Battery diagram PANEL e+ External Regulator 2 jobs 1.Keep charge voltage < ~ 16-18V. If > damage battery. 2.Keep system from discharging. Blocking diode lets power go only 1 way (to battery). +-+- +-+- +-+- - + At full sun, panels can produce > 22 volts DC OUTPUTOUTPUT INPUTINPUT

25. External Regulator Check (see Cell/Regulator/Battery diagram) Blocking Diode Check 1.Disconnect solar panel wires from external regulator. Test with VOM for power at regulator INPUT position. If > ~ 5 V DC; regulator is bad, allowing panel to discharge the battery through regulator. If < 5 V DC; regulator is O.K. Charge Control Check 1.Disconnect solar panel wires from external regulator and measure DC coming from unregulated panel. If sunny, ~ 18-22 V DC If cloudy, < 14-16 V DC 2.Reconnect wires from solar panel to regulator and disconnect OUTPUT side wires from regulator to battery. Test regulator output, even in full sun output < 16 V DC

26. Load Testing Batteries VOM check does not ensure battery is “good”. Battery should be removed from site, hard charged and then load tested by battery shop. Portable load testers can be purchased for ~ $50.00. Recommended as standard equipment for DC, DC/solar sites.