MDA Toxic Gas Monitor

Changing Chemcassettes

Chemcassettes stored in refrigerator in Electronics Shop.
Used oldest cassettes first.

Only lighted function keys active.

  1. Open door.
  2. Press Monitor key.
  3. Prompt says Sample in Progress – Please Stand By. Wait for sampling cycle to complete.
  4. At Monitoring Suspended - Select Function prompt press Monitor key.
  5. At Resume Analysis – 0=No 1=Yes prompt press 0=No key.
  6. At System 16 - Select Function prompt press Service key.
  7. At Service Mode – Service=>Options prompt press 5 key (load chemcassette).
  8. At Load Chemcassette – Press Again to Start prompt press 5 key.
  9. At Analyzer (1/2) prompt press 1 for top or 2 for bottom analyzer.
  10. At CC Req’d. Press Key prompt press the same analyzer number (1/2) as was pressed for step 9.
  11. Prompt says Load Chemcassette – Press Key When Done.
  12. (a) turn chemcassette load lever Ό turn clockwise;
  13. (b) remove wheelscrews holding tape reels;
  14. (c) remove used chemcassette and used tape;
  15. (d) use compressed air to clean sensor area;
  16. (e) mount correct new chemcassette with wheelscrew, check alignment pin/hole;
  17. (f) thread tape through guides;
  18. (g) thread tape to pickup reel hub at least one revolution,;
  19. (h) install pickup reel tape retainer flange with wheelscrew, check alignment detents;
  20. (i) turn chemcassette load lever Ό turn anti-clockwise.
  21. Press any numeric key.
  22. At Cassette Size – 0=Small 1=Large prompt press 1 key.
  23. At Reset Tape Counter – 0=No 1=Yes prompt press 1 key.
  24. At Service Mode Service=>Options prompt press 5 key (step 7) to load another chemcassette or Monitor to resume monitoring.
  25. At Monitor Mode – Monitor=>Options prompt press Monitor key.
  26. At 1=Sequential - 2=Parallel prompt press 2 key.
  27. At 2 Parallel – Press Again to Start prompt press 2 key.