PerkinElmer aanalyst 200 User Manual page 278

Maintenance
1. Turn off the AAnalyst 200 power switch.
2. Empty the drain vessel.
3. Unplug the drain interlock connector from the burner (see Figure 9- 11).
4. Remove the spiral wrap from the drain tubing by unwrapping it. This will release the drain
interlock cable.
5. Disconnect the drain tubing from both the drain vessel and the drain outlet on the burner end
cap by loosening the clamps on each end of the tubing. Once the clamps are loosened, the
tubing should easily pull out.
6. Place the new piece of drain tubing (P/N 0250-7987) next to the drain interlock cable and
carefully rewrap the spiral wrap around them both.
7. Place the drain clamp on the upper end of the new drain tubing. Then attach the tubing to the
drain outlet on the burner end cap. Tighten the clamp securely.
8. Place the other drain clamp on the lower end of the drain tubing. Then attach the tubing to
the drain trap switch assembly. Tighten the clamp securely.
9. Plug the drain interlock connector into the receptacle under the burner. Make sure the
interlock connector is plugged in all the way.
10. Go to "Preparing the New Drain Tubing for Use" (next).
Preparing the New Drain Tubing for Use
NOTE: This important procedure MUST be performed at this point of the drain tube replacement
process.
In order for the sample introduction system to drain smoothly, the internal surface of the new
drain tube needs to be prepared. This is easily accomplished when you:
1. Aspirate a 50/50 solution of water and methanol for approximately 5 minutes.
2. Replacement and preparation is now complete.
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