Topics: ASHRAE/CMR
1: Machinery rooms must be vented to ______?
- basement
- neutralizing tank
- unoccupied spaces
- outdoors
2: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.
- 15
- 75
- 55
- 50
3: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Foot valve
- Muffler
- Moisture indicator
- Stop valve
4: A restaurant is classified as a
- public assembly occupancy
- mixed occupancy
- commercial occupancy
- large mercantile occupancy
5: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into
- the low-pressure side of the system
- the high side of the system
- the liquid receiver
- both a and c are correct
6: Which of the following are considered inorganic refrigerants?
- R-717 and R-718
- 410A and R-407C
- R-500 and R-502
- None of the above
7: What is R-22?
- Chlorodifluoromethane
- HFC
- CCFCM
- Chlorofluoromethane
8: Who authorizes changes to the safety codes?
- Board of Boilers
- Person in charge of the facility
- Person who pulled the permit
- Contractor who last serviced the system.
9: R-22 is considered a(n)
- HCFC
- CFC
- HCFCH
- HFC
10: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- you can't change refrigerants
- place sign, check for leaks, insulate
- make sure it's compatible, notify owner, notify A.H.J
- nothing must be done
11: The discharge relief valve is located (9.4.6)
- between the compressor and reciever
- between the compressor and the stop valve
- on top of the condensor
- between the compressor and oil separator
12: How are refrigerant blends classified?
- Based on the oil used
- Blends don't have to be classified
- Based on best case Fractionation
- Based on worst case fractionation
13: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
- ammonia
- HCFC-123
- CFC-11
- Lithium bromide
14: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Copper
- Nickel
- Magnesium
- Zinc
15: Stop valves shall not be permitted between the system and the
- condenser
- relief valve
- bleed valve
- service valve
16: How many refrigerant classifications are there for toxicity?
- 5
- 3
- 1
- 2
17: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?
- Relief valve
- T&P device
- Circuit Breaker
- Temperature limiter device
18: How much clearance do you need around the perimeter of electrical panels?
- 24"
- 18"
- 36"
- 12"
19: _____ and its alloys are suitable for use with ammonia systems.
- Magnesium
- Copper
- Zinc
- Aluminum
20: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 1
- 5
- 3
- 2
21: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
- True
- False
22: What refrigerant doesn't have to be classifted?
- R-134a
- R-711
- R-717
- R-718
23: What would be the classification for Stop & Shop grocery store?
- Place of assembly
- Industrial
- Instituional
- Large mercantile
24: The main purpose of a refrigerant detector in a machinery room is to
- inform there is a refrigerant leak int he system
- detect toxins in the air caused by a refrigerant leak
- to set off an alarm when there is refrigerant present inside the room
- all of the above
25: When a refrigerating machinery room is used, the emergency procedures shall be posted
- outside the room, immediately adjacent to each door
- on a conspicuous card located near the compressor
- inside the room, immediately adjacent to each door
- on a conspicuous card located near the evaporator