What is the last step in the operational sequence of the typical oil-fired furnace?
A) The flame shuts down. B) The indoor blower turns off.
C) The heat exchanger cools. D) The fan switch contacts open.
B
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In general, how much endplay should ball-bearing motors have?
a. 1/32" to 1/16" b. 1/4" to 1/2" c. 5/8" to 3/4" d. 1" to 1-1/4"
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A motor enclosure that minimizes the entrance of rain and airborne particles to the electrical parts is considered
_____. a. drip-proof b. dust-proof c. sealed d. weather-protected
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The first step to solving a problem is to _____.