Which of the following steps should come first in an analysis of system operating conditions?
a. Measure and record the compressor current.
b. Listen for abnormal sounds as the unit starts.
c. Connect a gauge manifold to the system.
d. Record the superheat at the outlet of the evaporator.
c. Connect a gauge manifold to the system.
You might also like to view...
-5 + 13 =
A) -18 B) 8 C) -8 D) 18
In a private waste disposal system, waste flows through a distribution box into a(n) __ .
A. interceptor B. trap C. leachfield D. holding tank
An air conditioner is operating with low system pressures, an evaporator saturation temperature of 20°F and a suction line temperature of 24°F. The suction line is frosting. The most likely cause of these symptoms is:
A) That the system is undercharged. B) That the system is overcharged. C) Excessive humidity in the air, causing the coil to frost up. D) Reduced airflow across the evaporator.
Which scale has 11 scales and expresses measurements in feet and inches?
a. Architect's scale b. Engineer's scale c. Metric scale d. Mechanical engineer's scale e. Mapping scale