Before starting to change a belt on a belt drive blower, the technician should:
A) Put on heavy work gloves in case the unit is inadvertently started while changing the belt.
B) Turn the power to the unit off and lock it out.
C) Turn the thermostat off and leave instructions not to turn it on.
D) Wedge a metal bar between the pulley and the unit housing to prevent it from starting.
B
You might also like to view...
Explain the importance of standardized formats in a document control system.
What will be an ideal response?
An open door switch on a gas furnace will cause:
A) The combustion process to shut down, but will not affect the indoor blower. B) A complete system shutdown–no system operation at all. C) The door open alarm to sound, but will not affect system operation. D) The indoor blower to shut down, but will not affect the combustion process.
ClimateTalk controls are available for (you may choose more than one):
A) furnace boards B) interior lighting C) variable speed motors D) toasters E) heat pumps F) thermostats G) attic ventilation fans
A DSP is a special type of microprocessor that processes data in real time
Indicate whether the statement is true or false