Technicians who perform sealed system service
on small appliances must have; - -Type I
or Universal certification. Self-contained or active recovery equipment; -
-Has its own means of recovery.
A small appliance is defined by EPA as; - -
Appliances manufactured, charged, and System-dependant or passive recovery
hermetically sealed in a factory with 5 Lbs or less equipment; - -Captures refrigerant into a
of refrigerant non-pressurized container with assistance of the
appliance compressor.
Type I Certification is required for; - -
persons handling refrigerant during maintenance, What is defined as a non-condensible? - -
service, or repair of small appliances Air
If regulations change after the technician When using a system-dependent recovery
becomes certified; - -The technician is system on an appliance that has an operating
responsibility for complying with any future compressor, the technician should; - -Run
changes in the regulations. the compressor and recover from the high side of
the system.
Recovery equipment manufactured after
November 15, 1993 must be; - -capable of When using a system-dependent recovery
recovering 90% of the refrigerant in the system on an appliance that has a non-operating
compressor os operating; 80% of refrigerant if its compressor, the technician should; - -Place
not or 4 inches of vaccum access fitting on both the low and high side of the
system.
Which of the following is true of small appliances
refrigerant leaks; - -EPA does not require System-dependant devices may only be used on
repair, but leaks should be repaired whenever appliances containing; - -15 pounds of
possible. refrigerant or less.
Recovery equipment manufactured after Small appliances are equipped with a straight
November 15, 1993 must be capable of piece of tubing (process stub) used to; - -
recovering; - -90% refrigerant or or install a piercing type access valve fitting.
achieving 4 inches of vacuum.
If a strong odor is detected while performing the
Recovering multiple types of refrigerants in the recovery process, - -A compressor burnout
same cylinder; - -will make the reclaimed has likely occurred.
refrigerants non reclaimable and a charge for
disposal may be levied.
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, EPA 608 Type 1 Test Questions with 100% Verified Answers
After the refrigerant has been recovered, which
of the following can be used to flush the system? After recovering refrigerant, the Nitrogen used to
- -Nitrogen flush the system may be: - -legally vented.
When filling a charging cylinder with a regulated The sale of CFCs and HCFC's are - -
refrigerant; - -The refrigerant vapor that is restricted to certified technicians
vented off the top of the cylinder must be
recovered.
ARI 740 sets - -recovery requirements
If after installing a fitting for the purpose of
recovering the appliances refrigerant, you find All equipment must be equipped with - -low
that the system pressure is 0 psig; - - loss fittings
Recovery is not required.
Low loss fittings should be able to - -close
Applying heat with a heat gun to the compressor; manually or automatically when hoses are
- -can help vaporize any trapped liquid disconnected to minimize refidgerant loss
refrigerant during recovery.
Before beginning a refrigerant recovery
Refrigerators in the 1950's and earlier may have procedure, it is necessary - -to know the
used what refrigerants (recovery is not required)? type of refrigerant that is in the system.
- -Methyl Formate, Methyl Chloride, or
Sulfur Dioxide.
self contained (active) recovery equipment stores
itself in a - -pressurized recovery tank
Small appliances in recreational vehicles may
use refrigerants such as Ammonia, Hydrogen, or
water, and therefore; - -The refrigerant Before opening a self contained recovery
should not be recovered. machine make sure the - -inlet valve is
open, and tank does not contain excessive air
(non condensables)
Recovery equipment manufactured before
November 15, 1993 must be capable of
recovering. - -80 percent of the refrigerant The only way to read refrigerant pressure
or achieving 4 inches of vacuum. correctly is at - -a stable known
temperature
When pressurizing a system with nitrogen you
should; - -charge through a pressure Air in refrigeration systems will cause - -
regulator;place a relief valve in the downstream higher discharge pressures
line from the pressure regulator.
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