Which of the following methods are allowed to keep hot water available quickly at a remote plumbing fixture? Select all that apply.
A) Recirculating system using a pump.
B) Recirculating system using gravity flow.
C) Remote undercounter tank type heater.
A) Recirculating system using a pump. , B) Recirculating system using gravity flow. and C) Remote undercounter tank type heater.
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Which of the following types of oil filter would normally have the highest filtration efficiency?
A. bypass B. full flow C. canister D. spin-on
____________________ is a category of incidents that covers a spectrum of violations made by authorized users of a system who nevertheless use the system in ways specifically prohibited by management.
Fill in the blank(s) with the appropriate word(s).
An accessory used to evaporate refrigerant from oil is the _____.
a. crankcase heater b. oil separator c. suction line accumulator d. oil line strainer
An oil pressure switch compares ________
A) oil pressure with high pressure B) oil pressure with a setpoint of 15 PSI C) oil pressure with low pressure