4 (5 points) Match the service type to its correct service steps. Question 4 options: Prestart inspection Operation check Troubleshooting Routine maintenance 1. Replacing filters and fluids 2. Checking operational specifications 3. Checking voltage, current, and pressures 4. Tracing and correcting faults Question 5 (5 points) Choose all options that apply. What are the main reasons to ensure all steps are properly followed in an installation? Question 5 options: a) To minimize tool wear and tear b) To promote efficient system operation c) To avoid catastrophic damage d) To save time e) To minimize the risk of injury Question 6 (5 points) Choose all options that apply. Which of these are consequences of noncondensables contaminating a refrigeration system? Question 6 options: a) Operating costs increase. b) Compressor efficiency improves. c) Compressor amp draw lessens. d) Compressor capacity decreases. e) Compressor operating temperature increases