FREEMANSHARP

Type I Small appliances- 5lbs or less Type II Residental Units/ Light Commercial Type III Industrial Universal All types November 14th, 1994 Section 608 of the federal clean air act requires all persons who maintain, service, repair or dispose of appliances that contain regulated refrigerants, be certified in proper refrigerant handling techniques as of Nov 14th, 1994 3 R's Recover, Recycle, Reclaim Low Loss Fitting Minimal amout of ref. to be re...

Ozone stratosphere above the earth consists of molecules containing... 3 oxygen atoms (O3) The oxygen we breathe contains how many atoms in each molecule? two atoms (O2) The ozone layer consists of ozone in the stratosphere at an altitude of between __________above the earth 7 and 28 miles the ozone layer is formed by what? Ultra violet light from the sun acting on oxygen molecules,absorbs and scatter UV light from the sun What does the Ozone layer do? prevents h...

the state of the refrigerant entering the metering device is? A subcooled high pressure liquid. what type of refrigerant is used in VERY high-pressure appliances? R-503 what type of refrigerant is used in MEDIUM pressure appliances? R-500 what type of refrigerant is used in HIGH pressure appliances? R-410A and R-22 what device is located at the END of the liquid line? The expansion device. what type of refrigerants are the LEAST harmful to the ozone layer?...

When moisture exists in an operating system, what is most likely to occur? Acid will form. What factor(s) affects the speed of evacuation? 1) The size of the equipment being evacuated. 2)The ambient temperature. 3) The amount of moisture in the system A system is considered dehydrated when? The vacuum indicator shows you have reached & held the required finished vacuum. The over-evacuation of a system: Does not occur. The size (capacity) of the vacuum pump &...

Refrigeration technicians who violate the Clean Air Act can: - Lose their EPA certification, be fined, be required to appear in Federal court. After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - recovery and recycling. Refrigerant that is recovered can be returned to: - the same system or other systems owned by the same person without restriction. Refrigerant can not be called "reclaimed" unless it: - . has been chemi...

On low pressure chillers, moisture typically enters the refrigerant system through air leaks from areas with gaskets or fittings The maximum test pressure for leak testing a low pressure centrifugal is: 10 psig Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller ... A hydrostatic tube test kit is used to: determine if a tube leaks Commercial and industrial process refrigeration systems must be repaired when the leak rate...

As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? a. July 1, 1992 b. July 1, 1993 c. November 14, 1994 d. January 1, 1996 a. July 1, 1992 What is the ozone layer and why is it important to us on Earth? a. Thin layer of R-22 in the atmosphere that filters UV. b. Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that extends about 6 to 30 miles above earth c. Thin layer of CFC ...

Which Refrigerants contain the most chlorine? CFC's As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the atmosphere? July 1, 1992 Which Refrigerants have the lowest zone depletion potential? HFC's The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in the stratosphere is: Chlorine Stratospheric ozone consists of: Three oxygen atoms Stratospheric ozone depletion is a _________ pr...

As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? July 1, 1992. What is the ozone layer and why is it important to us on Earth? Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that extends about 6 to 30 miles above earth. The atom found in CFC and HCFC refrigerants that destroys ozone in the stratosphere is? Chlorine. What is an ozone molecule made of? Three oxygen a...

What are the typical uses of the center port of gauge set? Used during evacuation, charging and recovery procedures. What color are the gauges on a manifold gauge set? Low pressure is blue, High pressure is red. What are the typical ranges of pressure measurements used on the gauges of a manifold gauge set? High side is 0 to 500 PSIG; Low side is 0 to 350 PSIG and 0 to 30 in. Hg below atmospheric pressure. Is the refrigerant leaving a condenser at a high or low pressure? ...

Are there drop-in replacements for R-12 systems? Why or why not? No because the new refrigerants are incompatible with the oils and lubricants used in R-12 systems. What type of oil is used in R-134a and what oils will it mix with? Ester based oils and they do not mix with other oils What type of lubricant is used with HCFCs? Alkylbenzene lubricant What is difference b/w ternary blend a azeotropic blend? Ternary blends are three-part mixtures whereas azeotropic blends ar...

a vacum pump should be connected as far away from the pump as possible a high capacity vacuum pump and short, large diameter hoses will dramatically reduce emissions, pressure drop, and evacuation/dehydration time ozone contains three oxygen atoms one chlorine atom can destroy 100,000 ozone molecules CFC's do not dissolve in water and do not breakdown into other compounds that dissolve in water CFC's cannot be washed out of the lower atmosphere ODP ozon...

What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? November 14, 1994 Section 608 of the Federal Clean Air Act requires technicians to what? Recover all refrigerants. The objective of the Clean Air Act is to protect what? The earth's stratosphere. HFC's HydroFlouroCarbon's CFC's ChloroFluoroCarbon's ODP Ozone Depletion Potential Which international treaty agreement was the basis for Section 6...

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phonological processing system -Front of brain -processes the sounds of speech phonological processing ability to discriminate and remember sounds within words -speech perception / production -phonological working memory -rapid automatic naming -phonological and phonemic awareness phonological awareness in addition to phonemic awareness, includes the ability to identify, count, and manipulate the parts of words, including syllables, onsets and rimes, and phonemes. ph...

Students in Ehri's prealphabetic phase need instruction in basic oral language skills before manipulating phonemes. true false True Sound chaining should begin with substituting the middle sounds and end sounds in a word, as these are most difficult. true false False Which of the following principles are important for teaching phonological skills in particular? Select all that apply. a. Focus students' attention on speech sounds before focusing on letters. b. Do a f...

English vowels are easier for students to pronounce and write than consonants. False What makes r-controlled vowel sounds so confusing for students? The r takes over the preceding vowel sound. Which of the following sounds is considered a front vowel? /a/ (long a) Which of the following vowels require that the mouth shift position during production of the sound? Select all that apply. /oi/ and /ou/

T/F In many instances, two different consonant phonemes in English are formed the same way in the mouth, but one is voiced and the other is unvoiced. True T/F Adults often miscount the number of phonemes in a word because they tend to recall how a word looks in print and count the letters, not the sounds. True Which of the following sounds is an affricate, meaning it combines features of fricatives and stops? a. /k/ b. /ng/ c. /ch/ d. /zh/ C. /ch/ Which of the followi...

structural components of oral language phonology semantics morphology syntax prosody phonology study of the sound system of a language semantics study of word and phrase meaning how many words should a child be speaking by 5 years old? 2100-2200 semantics major development in preschool vocabulary development is the ability to use decontextual talk decontextual talk speech that requires responses using information from the past or future three t...

Case Study Anna Anna is at the early level of phonemic awareness. Case Study Javier Javier is at the advanced level of phonemic awareness. Case Study Ronaldo Ronaldo is at the basic level of phonemic awareness. What is the first and primary focus of teaching phonemic awareness? teaching students specific phonemes and how they feel in the mouth Classroom phonemic awareness exercises should be: multisensory, involving hearing, sound, touch, and movement Whic...