Phase 2: Week 4 Review
The Mentor-led questions (at right) are to be asked by the Mentor during the weekly review.
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The Technician in Training should record the full Q&A discussion and upload the audio file using the form below. Once complete, press Submit to finalize this week’s assessment.
After Upload, press Submit.
Mentor-Led Q&A
1. What do 1AVPT, 3APT, 4APT, 5CPT, 6CPT, 2ATT, 4ATT, 3CTT, correspond to?
2. Why do we have 2 different coolant pressure transducers?
3. How do we calculate separator pressure differential? What is a good value for this? What value for this will the compressor shut down?
4. How do we calculate separator pressure differential? What is a good value for this? What value for this will the compressor shut down?
5. What is a typical value for inlet vacuum when running loaded? Unloaded? Why is unloaded higher?
6. If loaded inlet vacuum is high, what could be the reason?
7. What voltage does a 4APT transducer output at 0PSI? 225 PSI? 100 PSI?
8. How can we use a signal generator to replicate this?
9. What airend discharge temperature will IR compressors shut down?
10. What is typical differential between coolant temp and airend discharge temp?