Maintenance Technician Question and Answers Flashcards

A store's fire sprinkler system gauge shows pressure has dropped below the minimum required level. What is the appropriate response?

Answer: Immediately notify management and contact the fire suppression service company

Low sprinkler system pressure is a life-safety concern requiring immediate professional attention and management notification.

What is the purpose of a condensate pump in a commercial HVAC system?

Answer: To remove condensation water from the evaporator and drain it to an appropriate location

Condensate pumps collect and pump water that condenses on the evaporator coil to a drain location, preventing water damage.

You discover that a 20-amp circuit in the break room is wired with 14-gauge wire. Is this acceptable?

Answer: No, a 20-amp circuit requires minimum 12-gauge wire

The National Electrical Code requires 12-gauge wire minimum for 20-amp circuits. 14-gauge is only rated for 15 amps.

A commercial refrigeration unit's defrost cycle is not initiating automatically. What components should you check?

Answer: The defrost timer, defrost heater, and defrost termination thermostat

The defrost cycle depends on three key components: the timer that initiates it, the heater that melts ice, and the thermostat that ends the cycle.

What is the proper method for testing a GFCI outlet to ensure it is functioning correctly?

Answer: Press the TEST button, verify the outlet loses power, then press RESET to restore power

The built-in TEST button simulates a ground fault; the outlet should trip and lose power, then restore when RESET is pressed.

The store's loading dock leveler is stuck in the down position and will not raise. What should you check first?

Answer: Check the hydraulic fluid level, pump motor, and control switch

Hydraulic dock levelers depend on fluid, pump, and controls. Checking these components first identifies the most common failure points.