Cfesa steam practice test
A charcoal or carbon filter is used to do what? - ANS-A charcoal filter is used to put off
chlorine, flavor and odor from water.
A pH of 2 is how an awful lot extra acidic than a pH of 3? - ANS-10 times greater acidic
A pilot reservoir machine works from what basic precept? - ANS-That water seeks its own
level.
All remedy valves should be installed how, in terms of the boiler water stage? - ANS-above
water degree
Any outlet piping from the comfort valve have to be what length? - ANS-The equal size
because the pipe outlet of the comfort valve
Anytime a patron say that their kettle appears to be heating and is ip to pressure but will no
longer cook, their probably trouble is? - ANS-There is air within the kettle
As a kettle cools, what will appear to the gauge stress? Why? - ANS-It will pull into a vacuum
if the kettle is sealed. The molecules within the steam condense as they cool taking on less
area.
At what temp does meals shade start to alternate? - ANS-215-220 tiers F
At what temperature does water boil? - ANS-212 tiers Fahrenheit
Can a non functional air vent keep a boiler from heating? - ANS-Yes, if the incoming water
strain compresses the air enough, the high stress restrict manage could maintain the boiler
from heating.
Can a valve ever be established among the comfort valve and the boiler? - ANS-No
Describe the operation of an ion trade water softener - ANS-An ion exchange water softener
passes water via a resin center this is impregnated with salt as the water passes through the
middle, the difficult water mineral ions are accrued inside the center and replaced with soft
sodium ions.
Do solenoids usuallyfail for no cause - ANS-No
Does a convection steamer have a pressure remedy valve? - ANS-Some do. It will be 1-2
PSI if mounted to the cooking compartment.
, Galvanic corrosion has two corrosion poles. What are they known as? - ANS-anode to
cathode
Give a few examples of conditions that can make stainless-steel lively - ANS-Stainless metal
can become lively while it's miles protected in scale, or when the surface has a deep scratch
in it.
Good water for boiler you need to have a pH and what range - ANS-7-8
Hard water is taken into consideration to have a hardness of how many grains in line with
gallon - ANS-7-10
How are vacuums created in a boiler or pressure vessel? - ANS-Vacuum is created
whenever steam in a closed vessel cools down.
How can air get into the steam jacket? - ANS-Generally through leaks inside the comfort
valve, sight glass, or probe fittings.
How can air in a steam system act as an insulator? - ANS-Air trapped in a system maintains
the steam from having direct contact with the floor and acts as an insulator.
How can nickel plated boilers save you corrosion - ANS-Nickel is a lot higher on the galvanic
chart
How did including a 2d probe to the manipulate device correct the single probe
electro-mechanical liquid level manage? - ANS-The 2d probe creates a differential, or a
particular quantity of water that need to be used before the control kicks on.
How do you know how a great deal water to pour into a kettle with a sight glass? - ANS-Fill
about half manner up the sight glass.
How does a phosphate feeder paintings? - ANS-Phosphate produces a skinny film on piping,
valves, fitting and controls. This movie maintains the tough minerals from adhering to their
surfaces.
How does a self contained kettle vary from a direct steam kettle - ANS-Self contained kettles
have a steam jacket this is in part packed with water, this water is heated via an electric
element or gas burner to create steam.
How does air inside the steam jacket affect the operation of a steam kettle? - ANS-Air takes
up space that desires to be packed with steam and significantly reduced the heating
capability of the kettle.
How does an inverted bucket lure remove air from the machine? - ANS-It eliminates air thru
the condensate outlet while the entice opens.
A charcoal or carbon filter is used to do what? - ANS-A charcoal filter is used to put off
chlorine, flavor and odor from water.
A pH of 2 is how an awful lot extra acidic than a pH of 3? - ANS-10 times greater acidic
A pilot reservoir machine works from what basic precept? - ANS-That water seeks its own
level.
All remedy valves should be installed how, in terms of the boiler water stage? - ANS-above
water degree
Any outlet piping from the comfort valve have to be what length? - ANS-The equal size
because the pipe outlet of the comfort valve
Anytime a patron say that their kettle appears to be heating and is ip to pressure but will no
longer cook, their probably trouble is? - ANS-There is air within the kettle
As a kettle cools, what will appear to the gauge stress? Why? - ANS-It will pull into a vacuum
if the kettle is sealed. The molecules within the steam condense as they cool taking on less
area.
At what temp does meals shade start to alternate? - ANS-215-220 tiers F
At what temperature does water boil? - ANS-212 tiers Fahrenheit
Can a non functional air vent keep a boiler from heating? - ANS-Yes, if the incoming water
strain compresses the air enough, the high stress restrict manage could maintain the boiler
from heating.
Can a valve ever be established among the comfort valve and the boiler? - ANS-No
Describe the operation of an ion trade water softener - ANS-An ion exchange water softener
passes water via a resin center this is impregnated with salt as the water passes through the
middle, the difficult water mineral ions are accrued inside the center and replaced with soft
sodium ions.
Do solenoids usuallyfail for no cause - ANS-No
Does a convection steamer have a pressure remedy valve? - ANS-Some do. It will be 1-2
PSI if mounted to the cooking compartment.
, Galvanic corrosion has two corrosion poles. What are they known as? - ANS-anode to
cathode
Give a few examples of conditions that can make stainless-steel lively - ANS-Stainless metal
can become lively while it's miles protected in scale, or when the surface has a deep scratch
in it.
Good water for boiler you need to have a pH and what range - ANS-7-8
Hard water is taken into consideration to have a hardness of how many grains in line with
gallon - ANS-7-10
How are vacuums created in a boiler or pressure vessel? - ANS-Vacuum is created
whenever steam in a closed vessel cools down.
How can air get into the steam jacket? - ANS-Generally through leaks inside the comfort
valve, sight glass, or probe fittings.
How can air in a steam system act as an insulator? - ANS-Air trapped in a system maintains
the steam from having direct contact with the floor and acts as an insulator.
How can nickel plated boilers save you corrosion - ANS-Nickel is a lot higher on the galvanic
chart
How did including a 2d probe to the manipulate device correct the single probe
electro-mechanical liquid level manage? - ANS-The 2d probe creates a differential, or a
particular quantity of water that need to be used before the control kicks on.
How do you know how a great deal water to pour into a kettle with a sight glass? - ANS-Fill
about half manner up the sight glass.
How does a phosphate feeder paintings? - ANS-Phosphate produces a skinny film on piping,
valves, fitting and controls. This movie maintains the tough minerals from adhering to their
surfaces.
How does a self contained kettle vary from a direct steam kettle - ANS-Self contained kettles
have a steam jacket this is in part packed with water, this water is heated via an electric
element or gas burner to create steam.
How does air inside the steam jacket affect the operation of a steam kettle? - ANS-Air takes
up space that desires to be packed with steam and significantly reduced the heating
capability of the kettle.
How does an inverted bucket lure remove air from the machine? - ANS-It eliminates air thru
the condensate outlet while the entice opens.
