Post by marryson1999 on May 4, 2011 17:25:58 GMT -8
which of the following refrigerant mus be recovered with equipment currently regulated by the equipment certification requirements of the epa under section 608?
a)suluf dioxide
b)methyl chloride
c)methly formate
d)r-12
2) a storage cylinder of recoverred r-500 at normal room tempertaure, in the absense of non-condensable, will be pressurized to ?
a)30 psig
b)75 psig
c)95 psig
d)120 psig
3)when checking for non-condensables inside a recovery cylinder, wht should the technician allow the temperature of the cylinder to stabilize to room temperature before taking a pressure reading ?
a)to prevent safety valves from purging refrigerant
b)it is a quick method of determin erferigerant level inside the tank
c) comparisons to a pressure -temperature chart are only vails id both the pressure and temperature of the refrigerant are stable and know
d)a tempertaurereading alone is enough to determine refrigerant qualirty
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superfood
heating and cooling Vancouver WA