Appendix B3 to Subpart F of Part 82 - Performance of Refrigerant Recovery, Recycling, and/or Reclaim Equipment
40:21.0.1.1.1.6.1.15.23 : Appendix B3
Appendix B3 to Subpart F of Part 82 - Performance of Refrigerant
Recovery, Recycling, and/or Reclaim Equipment
This appendix is based on the Air-Conditioning, Heating, and
Refrigeration Institute Standard 740-2016, Performance Rating of
Refrigerant Recovery Equipment and Recovery/Recycling
Equipment.
Section 1. Purpose
1.1 The purpose of this standard is to establish methods of
testing for rating and evaluating the performance of refrigerant
recovery, and/or recycling equipment and general equipment
requirements (herein referred to as “equipment”) for contaminant or
purity levels, capacity, speed and purge loss to minimize emission
into the atmosphere of designated refrigerants.
Section 2. Scope
2.1 This standard applies to equipment for recovering and/or
recycling single refrigerants, azeotropes, zeotropic blends, and
their normal contaminants from refrigerant systems. This standard
defines the test apparatus, test gas mixtures, sampling procedures
and analytical techniques that will be used to determine the
performance of refrigerant recovery and/or recycling equipment
(hereinafter, “equipment”). Appendix B4 of this subpart establishes
standards for recovery/recycling equipment used with flammable
refrigerants.
Section 3. Definitions
3.1 Definitions. All terms in this appendix will follow
the definitions in § 82.152 unless otherwise defined in this
appendix.
3.2 Clearing Refrigerant. Procedures used to remove
trapped refrigerant(s) from equipment before switching from one
refrigerant to another.
3.3 High Temperature Vapor Recovery Rate. For equipment
having at least one designated refrigerant (see Section 11.2 of
this appendix) with a boiling point in the range of −50 to +10 °C,
the rate will be measured for R-22, or the lowest boiling point
refrigerant if R-22 is not a designated refrigerant.
3.4 Published Ratings. A statement of the assigned values
of those performance characteristics, under stated rating
conditions, by which a unit may be chosen to fit its application.
These values apply to all units of like nominal size and type
(identification) produced by the same manufacturer. As used herein,
the term “published rating” includes the rating of all performance
characteristics shown on the unit or published in specifications,
advertising, or other literature controlled by the manufacturer, at
stated rating conditions.
3.5 Push/Pull Liquid Recovery. The push/pull refrigerant
recovery method is defined as the process of transferring liquid
refrigerant from a refrigeration system to a receiving vessel by
lowering the pressure in the vessel and raising the pressure in the
system, and by connecting a separate line between the system liquid
port and the receiving vessel.
3.6 Recycle Flow Rate. The amount of refrigerant
processed divided by the time elapsed in the recycling mode. For
equipment which uses a separate recycling sequence, the recycle
rate does not include the recovery rate (or elapsed time). For
equipment which does not use a separate recycling sequence, the
recycle rate is a rate based solely on the higher of the liquid or
vapor recovery rate, by which the contaminant levels were
measured.
3.7 Residual Trapped Refrigerant. Refrigerant remaining
in equipment after clearing refrigerant.
3.8 Shall, Should, Recommended or It Is
Recommended shall be interpreted as follows:
3.8.1 Shall. Where “shall” or “shall not” is used for a
provision specified, that provision is mandatory if compliance with
this appendix is claimed.
3.8.2 Should, Recommended or It Is Recommended is
used to indicate provisions which are not mandatory but which are
desirable as good practice.
3.9 Standard Contaminated Refrigerant Sample. A mixture
of new or reclaimed refrigerant and specified quantities of
identified contaminants which constitute the mixture to be
processed by the equipment under test. These contaminant levels are
expected only from severe service conditions.
3.10 Trapped Refrigerant. The amount of refrigerant
remaining in the equipment after the recovery or recovery/recycling
operation but before clearing refrigerant.
3.11 Vapor Recovery Rate. The average rate that
refrigerant is withdrawn from the mixing chamber between two
pressures as vapor recovery rate is changing depending on the
pressure. The initial condition is vapor only at saturation
pressure and temperature at either 24 °C or at the boiling point at
100 kPa, whichever is higher. The final pressure condition is 10
percent of the initial pressure, but not lower than the equipment
final recovery vacuum and not higher than 100 kPa.
Section 4. General Equipment Requirements
4.1 Equipment Information. The equipment manufacturer
shall provide operating instructions, necessary maintenance
procedures, and source information for replacement parts and
repair.
4.2 Filter Replacement. The equipment shall indicate when
any filter/drier(s) needs replacement. This requirement can be met
by use of a moisture transducer and indicator light, by use of a
sight glass/moisture indicator, or by some measurement of the
amount of refrigerant processed such as a flow meter or hour meter.
The equipment manufacturer must provide maximum quantity recycled
or filter change interval in its written instructions.
4.3 Purge of Non-Condensable. If non-condensables are
purged, the equipment shall either automatically purge
non-condensables or provide an indicating means to guide the purge
process. Recycling equipment must provide purge means.
4.4 Purge Loss. The total refrigerant loss due to purging
non-condensables, draining oil, and clearing refrigerant (see
Section 9.5) shall be less than 3 percent (by weight) of total
processed refrigerant.
4.5 Permeation Rate. High pressure hose assemblies 5/8
in. (16 mm) nominal and smaller shall not exceed a permeation rate
of 3.9 g/cm 2/yr (internal surface) at a temperature of 48.8 °C.
Hose assemblies that UL recognized as having passed UL 1963, 2011
requirements shall be accepted without testing. See Section 7.1.4
of this appendix.
4.6 Clearing Trapped Refrigerant. For equipment rated for
more than one refrigerant, the manufacturer shall provide a method
and instructions which will accomplish connections and clearing
within 15 minutes. Special equipment, other than a vacuum pump or
manifold gauge set, shall be furnished. The clearing procedure
shall not rely upon the storage cylinder below saturated pressure
conditions at ambient temperature.
4.7 Temperature. The equipment shall be evaluated at 24
°C with additional limited evaluation at 40 °C. Normal operating
conditions range from 10 °C to 40 °C.
4.8 Exemptions. Equipment intended for recovery only
shall be exempt from Sections 4.2 and 4.3.
Section 5. Contaminated Refrigerants
5.1 Sample Characteristics. The standard contaminated
refrigerant sample shall have the characteristics specified in
Table 1, except as provided in Section 5.2 of this appendix.
Testing shall be conducted at an ambient temperature of 24 °C ± 1
°C except high temperature vapor recovery shall be 40 °C ± 1
°C.
5.2 Recovery-only Testing. Recovery equipment not rated
for removal of contaminants shall be tested with new or reclaimed
refrigerant.
Section
6. Test Apparatus
6.1 General Recommendations. The recommended test
apparatus is described in the following paragraphs. If alternate
test apparatus are employed, the user shall be able to demonstrate
that they produce results equivalent to the specified reference
apparatus.
6.2 Self-Contained Equipment Test Apparatus. The
apparatus, shown in Figure 1, shall consist of:
6.2.1 Mixing Chamber. A mixing chamber consisting of a
tank with a conical-shaped bottom, a bottom port and piping for
delivering refrigerant to the equipment, various ports and valves
for adding refrigerant to the chamber, and stirring means for
mixing.
6.2.2 Filling Storage Cylinder. The storage cylinder to
be filled by the refrigerant transferred shall be cleaned and at
the pressure of the recovered refrigerant at the beginning of the
test. It will not be filled over 80 percent, by volume.
6.2.3 Vapor Feed. Vapor refrigerant feed consisting of
evaporator, control valves and piping to create a 3.0 °C superheat
condition at an evaporating temperature of 21 °C ± 2 °C.
6.2.4 Alternative Vapor Feed. An alternative method for
vapor feed shall be to pass the refrigerant through a boiler and
then through an automatic pressure regulating valve set at
different saturation pressures, moving from saturated pressure at
24 °C to final pressure of recovery.
6.2.5 Liquid Feed. Liquid refrigerant feed consisting of
control valves, sampling port, and piping.
6.2.6 Instrumentation. Instrumentation capable of
measuring weight, temperature, pressure, and refrigerant loss, as
required.
6.3 Size. The size of the mixing chamber and filling
storage cylinder used during testing shall correspond to the size
of the equipment being tested per Section 6.3.1 or 6.3.2:
6.3.1 For equipment utilizing nominal 1/4″ or 3/8″ flare ports
and hoses, the mixing chamber shall be 0.09 m 3 and all ports,
valves, mixing valves, and piping shall be 1/2″ or larger, reduced
down to the port size of the equipment by fittings at the
connection ports of the mixing chamber. The filling storage
cylinder used during testing shall be a nominal 50-pound water
capacity DOT 4Bx cylinder with 1/4″ flare liquid and vapor
ports.
6.3.2 For equipment utilizing 1/2″ or larger flare ports and
hoses, the mixing chamber shall be 0.45 m 3 (or nominal 1000-pound
water capacity DOT 4Bx cylinder) and all ports, valves, mixing
valves, and piping shall be 1 1/2″ or larger, reduced down to the
port size of the equipment by fittings at the connection ports of
the mixing chamber. The filling storage cylinder used during
testing shall be a nominal 1000-pound water capacity DOT 4Bx
cylinder with liquid and vapor ports, valves and piping sized 3/4″
NPT and reduced or increased to the port size of the equipment by
fittings at the connection ports of the filling storage
cylinder.
6.4 System Dependent Equipment Test Apparatus. This test
apparatus is to be used for final recovery vacuum rating of all
system dependent equipment.
6.4.1 Test Setup. The test apparatus shown in Figure 2
consists of a complete refrigeration system. The manufacturer shall
identify the refrigerants to be tested. The test apparatus can be
modified to facilitate operation or testing of the system dependent
equipment if the modifications to the apparatus are specifically
described within the manufacturer's literature. A 6.3 mm balance
line shall be connected across the test apparatus between the high-
and low-pressure sides, with an isolation valve located at the
connection to the compressor high side. A 6.3 mm access port with a
valve core shall be located in the balance line for the purpose of
measuring final recovery vacuum at the conclusion of the test.
Section
7. Performance Testing Procedures
7.1 General Testing.
7.1.1 Temperatures. Testing shall be conducted at an
ambient temperature of 24 °C ± 1 °C except high temperature vapor
recovery shall be at 40 °C ± 1 °C. The evaporator conditions of
Section 6.2.3 shall be maintained as long as liquid refrigerant
remains in the mixing chamber.
7.1.2 Refrigerants. The equipment shall be tested for all
designated refrigerants (see Section 11.2). All tests in Section 7
shall be completed for each refrigerant before starting tests with
the next refrigerant.
7.1.3 Selected Tests. Tests shall be as appropriate for
the equipment type and ratings parameters selected (see Sections
9.9, 11.1 and 11.2).
7.1.4 Hose Assemblies. For the purpose of limiting
refrigerant emissions to the atmosphere, hose assemblies shall be
tested for permeation according to UL Standard 1963 (incorporated
by reference, see § 82.168).
7.2 Equipment Preparation and Operation. The equipment
shall be prepared and operated per the operating instructions.
7.3 Test Batch. The test batch consisting of refrigerant
sample (see Section 5) of the test refrigerant shall be
prepared and thoroughly mixed. Continued mixing or stirring shall
be required during the test while liquid refrigerant remains in the
mixing chamber. The mixing chamber shall be filled to 80 percent
level by volume.
7.3.1 Control Test Batch. Prior to starting the test for
the first batch for each refrigerant, a liquid sample will be drawn
from the mixing chamber and analyzed per Section 8 to assure that
contaminant levels match Table 1 within ±10 ppm for moisture, ±20
ppm for oleic acid and ±0.5 percent for oil.
7.4 Recovery Tests (Recovery and Recovery/Recycling
Equipment)
7.4.1 Determining Recovery Rates. The liquid and vapor
refrigerant recovery rates shall be measured during the first test
batch for each refrigerant (see Sections 9.1, 9.2 and 9.4).
Equipment preparation and recovery cylinder changeover shall not be
included in elapsed time measurements for determining vapor
recovery rate and liquid refrigerant recovery rate. Operations such
as subcooling the recovery cylinder shall be included. The recovery
cylinder shall be the same size as per Section 6.3 or as furnished
by the equipment manufacturer. Oversized tanks shall not be
permitted.
7.4.1.1 Liquid Refrigerant Recovery Rate. If elected, the
recovery rate using the liquid refrigerant feed means (see
Section 6.2.5) shall be determined. After the equipment reaches
stabilized conditions of condensing temperature and/or recovery
cylinder pressure, the recovery process shall be stopped and an
initial weight shall be taken of the mixing chamber (see
Section 9.2). The recovery process shall be continued for a period
of time sufficient to achieve the accuracy in Section 9.4. The
recovery process shall be stopped and a final weight of the mixing
chamber shall be taken.
7.4.1.2 Vapor Refrigerant Recovery Rate. If elected, the
average vapor flow rate shall be measured to accuracy requirements
in Section 9.4 under conditions with no liquid refrigerant in the
mixing chamber. The liquid recovery feed means shall be used. At
initial conditions of saturated vapor at the higher of 24 °C or the
boiling temperature (100 kPa), the weight of the mixing chamber and
the pressure shall be recorded. At final conditions representing
pressure in the mixing chamber of 10 percent of the initial
condition, but not less than the final recovery vacuum (see
Section 9.6) nor more than 100 kPa, measure the weight of the
mixing chamber and the elapsed time. At initial conditions, the
recovery cylinder shall be at saturation pressure at ambient
conditions.
7.4.1.3 High Temperature Vapor Recovery Rate. This is
applicable for equipment having at least one designated refrigerant
(see Section 11.2) with a boiling point between −50 °C and
+10 °C. Measure the rate for R-22, or the refrigerant with the
lowest boiling point if R-22 is not a designated refrigerant.
Repeat the test in Section 7.4.1.2 at saturated conditions at 40 °C
and continue to operate equipment to assure it will operate at this
condition (see Section 7.4.3). At initial conditions, the recovery
cylinder shall be at saturated pressure at 40 °C.
7.4.1.4 Push/Pull Liquid Refrigerant Recovery Rate. If
elected, the average liquid push/pull flow rate shall be measured
to accuracy requirements in Section 9.4. The mixing chamber and
filling storage cylinder shall be filled with refrigerant vapor at
initial conditions of saturated vapor at the higher of 24 °C or the
boiling temperature at 100 kPa. An amount of liquid refrigerant
shall be added to the mixing chamber equivalent to 80 percent by
weight of the capacity of the filling storage cylinder. The
pressure between the mixing chamber and filling storage cylinder
shall be equalized and stabilized at initial conditions of
saturated vapor at the higher of 24 °C or the boiling temperature
at 100 kPa. The initial weight of the mixing chamber and the
pressure shall be recorded. The equipment is then operated in
push/pull liquid recovery mode and the weight change of the mixing
chamber is recorded over time until all of the liquid has been
transferred.
7.4.2 Recovery Operation. This test is for determining
the final recovery vacuum and the ability to remove contaminants as
appropriate. If equipment is rated for liquid recovery (see
Section 7.4.1.3), liquid recovery feed means described in Section
6.2.5 shall be used. If not, vapor recovery means described in
Sections 6.2.3 or 6.2.4 shall be used. Continue recovery operation
until all liquid is removed from the test apparatus and vapor is
removed to the point where equipment shuts down by automatic means
or is manually shut off per operating instructions.
7.4.2.1 Oil Draining. Capture oil from the equipment at
intervals as required in the instructions. Record the weight of the
container. Completely remove refrigerant from oil by evacuation or
other appropriate means. The weight difference shall be used in
Section 7.5.2.
7.4.3 Final Recovery Vacuum. At the end of the first test
batch for each refrigerant, the liquid valve and vapor valve of the
apparatus shall be closed. After waiting 1 minute, the mixing
chamber pressure shall be recorded (see Section 9.6).
7.4.4 Residual Refrigerant. This test will measure the
mass of remaining refrigerant in the equipment after clearing and
therefore the extent of mixing different refrigerants (see
Section 9.6).
7.4.4.1 Initial Conditions. At the end of the last test
for each batch for each refrigerant, the equipment shall be
disconnected from the test apparatus (Figure 1). Recycle per
Section 7.5, if appropriate. Perform refrigerant clearing
operations as called for in the instruction manual. Capture and
record the weight of any refrigerant which would have been emitted
to the atmosphere during the clearing process for use in Section
9.5. If two loops are used for recycling, trapped refrigerant shall
be measured for both.
7.4.4.2 Residual Trapped Refrigerant. Evacuate an empty
test cylinder to 1.0 kPa. Record the empty weight of the test
cylinder. Open all valves to the equipment so as to provide access
to all trapped refrigerant. Connect the equipment to the test
cylinder and operate valves to recover the residual refrigerant.
Record the weight of the test cylinder using a recovery cylinder
pressure no less than specified in Section 6.2.2. Place the test
cylinder in liquid nitrogen for a period of 30 minutes or until a
vacuum of 1000 microns is reached, whichever occurs first.
7.5 Recycling Tests (Recovery/Recycling Equipment).
7.5.1 Recycling Operation. As each recovery cylinder is
filled in Section 7.4.2, recycle according to operating
instructions. There will not necessarily be a separate recycling
sequence. Note non-condensable purge measurement in Section
9.5.
7.5.1.1 Recycle Flow Rate. While recycling the first
recovery cylinder for each refrigerant, determine the recycling
flow rate by appropriate means (see Section 9.3) to achieve
the accuracy required in Section 9.4.
7.5.2 Non-Condensable Sample. After completing Section
7.4.3, prepare a second test batch (see Section 7.3).
Recover per Section 7.4.2 until the current recovery cylinder is
filled to 80 percent level by volume. Recycle per Section 7.5.1.
Mark this cylinder and set aside for taking the vapor sample. For
equipment having both an internal tank of at least 3 kg refrigerant
capacity and an external recovery cylinder, two recovery cylinders
shall be marked and set aside. The first is the cylinder described
above. The second cylinder is the final recovery cylinder after
filling it to 80 percent level by volume and recycling.
7.5.2.1 Push/Pull Liquid Refrigerant Recovery Rate. This
rate shall be measured by weight change of the mixing chamber
divided by elapsed time (see Section 7.4.1.4). The units
shall be kg/min and the accuracy shall be per Section 9.4.
7.5.3 Liquid Sample for Analysis. Repeat steps in
Sections 7.3, 7.4.2 and 7.5.1 with further test batches until
indication means in Section 4.2 show the filter/drier(s) need
replacing.
7.5.3.1 Multiple Pass. For equipment with a separate
recycling circuit (multiple pass), set aside the current cylinder
and draw the liquid sample (see Section 7.4) from the
previous cylinder.
7.5.3.2 Single Pass. For equipment with the single pass
recycling circuit, draw the liquid sample (see Section 7.4)
from the current cylinder.
7.6 Measuring Refrigerant Loss. Refrigerant loss due to
non-condensables shall be determined by appropriate means
(see Section 9.5.1). The loss could occur in Sections 7.4.1,
7.4.2 and 7.5.1.
Section 8. Sampling and Chemical Analysis Methods
8.1 Chemical Analysis. Chemical analysis methods shall be
specified in appropriate standards such as AHRI Standard 700,
2008 Appendix C for Analytical Procedures for AHRI Standard
700-2014- Normative, and Addendum 700-1 to Appendix C. If
alternate test methods are employed, the laboratory must be able to
demonstrate that they produce results equivalent to the specified
referee method.
8.2 Refrigerant Sampling.
8.2.1 Moisture Content. The water content in refrigerant
shall be measured by the Karl Fischer Coulometric Titration
technique. Report the moisture level in parts per million by
weight.
8.2.2 Chloride Ions. Chloride ions shall be measured by
turbidity tests. At this time, quantitative results have not been
defined. Report chloride content as “pass” or “fail.” In the
future, when quantitative results are possible, report chloride
content as parts per million by weight.
8.2.3 Acid Content. The acidity test uses the titration
principle. Report the acidity in parts per million by weight (mg
KOH/kg) of sample.
8.2.4 High Boiling Residue. High boiling residues shall
use measurement of the volume of residue after evaporating a
standard volume of refrigerant. Using weight measurement and
converting to volumetric units is acceptable. Report high boiling
residues as percent by volume.
8.2.5 Particulates/Solids. The particulates/solids
measurement employs visual examination. Report results as “pass” or
“fail.”
8.2.6 Non-condensables. The level of contamination by
non-condensable gases in the base refrigerant being recycled shall
be determined by gas chromatography. Report results as percent by
volume.
Section 9. Performance Calculations for Ratings
9.1 Vapor Refrigerant Recovery Rate. This rate shall be
measured by weight change of the mixing chamber divided by elapsed
time (see 7.4.1.2). The units shall be kg/min and the
accuracy shall be per Section 9.4.
9.1.1 High Temperature Vapor Recovery Rate. This rate
shall be measured by measured weight change of the mixing chamber
divided by elapsed time (see Section 7.4.1.3). The units shall be
kg/min and the accuracy shall be per Section 9.4.
9.2 Liquid Refrigerant Recovery Rate. This rate shall be
measured by weight change of the mixing chamber divided by elapsed
time (see 7.4.1.3). The units shall be kg/min and the
accuracy shall be per Section 9.4.
9.3 Recycle Flow Rate. The recycle flow rate shall be as
defined in Section 3.12, expressed in kg/min, and the accuracy
shall be per Section 9.4.
9.3.1 For equipment using multi-pass recycling or a separate
sequence, the recycle rate shall be determined by dividing the net
weight, W, of the refrigerant to be recycled by the actual time T
required to recycle. Any set-up or operator interruptions shall not
be included in the time T.
9.3.2 If no separate recycling sequence is used, the recycle
rate shall be the higher of the vapor refrigerant recovery rate or
the liquid refrigerant recovery rate. The recycle rate shall match
a process which leads to contaminant levels in Section 9.9.
Specifically, a recovery rate determined from bypassing a
contaminant removal device cannot be used as a recycle rate when
the contaminant levels in Section 9.9 are determined by passing the
refrigerant through the contaminant removal device.
9.4 Accuracy of Flow Rates. The accuracy of test
measurements in Sections 9.1, 9.2 and 9.3 shall be ±008 kg/min for
flow rates up to 0.42 kg/min and ±2.0 percent for flow rates larger
than 0.42 kg/min. Ratings shall be expressed to the nearest 0.02
kg/min.
9.5 Refrigerant Loss. This calculation will be based upon
the net loss of refrigerant which would have been eliminated in the
non-condensable purge process (see Section 7.5.1), the oil
draining process (see Section 7.4.2.1) and the refrigerant
clearing process (see Section 7.4.4.1), all divided by the
net refrigerant content of the test batches. The refrigerant loss
shall not exceed 3 percent by weight.
9.5.1 Non-Condensable Purge. Evacuate an empty container
to 2 kPa. Record the empty weight of the container. Place the
container in a dry ice bath. Connect the equipment purge connection
to the container and operate purge according to operating
instructions so as to capture the non-condensables and lost
refrigerant. Weigh the cylinder after the recycling is complete.
Equivalent means are permissible.
For units which either recycle or publish (list) non-condensable
removal, non-condensable gases are purged, operating the recycle
device per the manufacturer's instructions through an evaporator
pressure regulator (EPR) valve into a liquid nitrogen-chilled
cylinder. This combination will simulate the atmosphere while
allowing the capture of purge gases. The cylinder is weighed before
and after the purge procedure.
9.5.2 Oil Draining. Refrigerant removed from the oil
after draining shall be collected and measured in accordance with
Section 7.4.2.1.
9.5.3 Clearing Unit. Refrigerant captured during the
clearing process shall be measured in accordance with Section
7.4.4.1.
9.6 Final Recovery Vacuum. The final recovery vacuum
shall be the mixing chamber pressure in Section 7.4.3 expressed in
kPa at 24 °C. The accuracy of the measurement shall be within 0.33
kPa.
9.7 Residual Trapped Refrigerant. The amount of residual
trapped refrigerant shall be the final weight minus the initial
weight of the test cylinder in Section 7.4.4.2, expressed in kg.
The accuracy shall be ±0.02 kg and reported to the nearest 0.05
kg.
9.8 Refrigerant Processed. The amount of refrigerant
processed before changing filters (see Section 7.5.3) shall
be expressed in kg to an accuracy of ±1 percent.
9.9 Contaminant Levels. The contaminant levels remaining
after testing shall be published as follows:
Moisture content, ppm by weight Chloride ions, pass/fail Acid
Content, ppm by weight High boiling residue, percent (by volume)
Particulates/solids, pass/fail (visual examination)
Non-condensables, percent (by volume)
9.10 Minimum Data Requirements for Published Ratings.
Published ratings shall include all of the parameters as shown in
Tables 2 and 3 for each refrigerant designated by the
manufacturer.
Section 10. Tolerances
10.1 Tolerances. Performance related parameters shall be
equal to or better than the published ratings.
Section 11. Marking and Nameplate Data
11.1 Marking and Nameplate Data. The nameplate shall
display the manufacturer's name, model designation, type of
equipment (Recovery or Recovery/Recycling and Self-Contained or
System Dependent), designated refrigerant(s), capacities, and
electrical characteristics where applicable. The nameplate shall
also conform to the labeling requirements established for certified
recycling and recovery equipment established at 40 CFR
82.158(h).
Recommended nameplate voltages for 60 Hertz systems shall
include one or more of the equipment nameplate voltages shown in
Table 1 of AHRI 110-2016 (incorporated by reference, see § 82.168).
Recommended nameplate voltages for 50 Hertz systems shall include
one or more of the utilization voltages shown in Table 1 of IEC
60038 (English version) (incorporated by reference, see §
82.168).
11.2 Data for Designated Refrigerants. For each
refrigerant designated, the manufacturer shall include all the
following that are applicable per Table 2:
a. Liquid Recovery Rate, kg/min b. Vapor Recovery Rate, kg/min c.
High Temperature Vapor Recovery Rate, kg/min d. Push/Pull Liquid
Recovery Rate, kg/min e. Final Recovery Vacuum Level, kPa f.
Recycle Flow Rate, kg/min g. Refrigerant Loss, kg h. Residual
Trapped Refrigerant, kg i. Quantity of Refrigerant Processed at
Rated Conditions, kg
Table 2 - Performance Ratings for
Refrigerant Recovery and Recovery/Recycling Equipment 4
5
Parameter |
Type of
equipment |
Recovery |
Recovery/
recycling |
Recycling |
System
dependent
equipment |
Liquid Refrigerant
Recovery Rate, kg/min |
X 1 4 |
X 1 |
N/A 5 |
N/A |
Vapor Refrigerant
Recovery Rate, kg/min |
X 1 |
X 1 |
N/A |
N/A |
High Temperature
Vapor Recovery Rate, kg/min |
X 1 |
X 1 |
N/A |
N/A |
Push/Pull Liquid
Recovery Rate, kg/min |
X 1 |
X 1 |
N/A |
N/A |
Final Recovery
Vacuum Level, kPa |
X |
X |
N/A |
X |
Recycle Flow Rate,
kg/min |
N/A |
X |
X |
N/A |
Refrigerant Loss,
kg |
X 2 |
X |
X |
X 3 |
Residual Trapped
Refrigerant, kg |
X 3 |
X 2 |
X 2 |
X 2 |
Quantity of
Refrigerant Processed at Rated Conditions, kg |
N/A |
X |
X |
N/A |
Table 3 - Contaminant Removal Ratings for
Refrigerant Recovery and Recovery/Recycling Equipment 1
2
Contaminant |
Type of
equipment |
Recovery |
Recovery/
recycling |
Recycling |
System
dependent
equipment |
Moisture Content,
ppm by weight |
N/A 2 |
X 1 |
X |
N/A |
Chloride Ions,
pass/fail |
N/A |
X |
X |
N/A |
Acid Content, ppm
by weight |
N/A |
X |
X |
N/A |
High Boiling
Residue, % by volume |
N/A |
X |
X |
N/A |
Particulates/solids, pass/fail |
N/A |
X |
X |
N/A |
Non-condensables,
% by volume |
N/A |
X |
X |
N/A |
Section 12. References
Listed here are all standards, handbooks, and other publications
essential to the formation and implementation of the standard. All
references in this appendix are considered as part of this
standard.
• UL 1963,
Standard for Safety Refrigerant Recovery/Recycling
Equipment, Fourth Edition (with revisions through October 13,
2013), dated June 1, 2011, (incorporated by reference, see §
82.168). • AHRI 110-2016,
2016 Standard for Air-Conditioning,
Heating and Refrigerating Equipment Nameplate Voltages,
copyright 2016 (incorporated by reference, see § 82.168). • AHRI
Standard 700-2015,
Specifications for Refrigerants,
Air-Conditioning, Heating, and Refrigeration Institute • IEC 60038
IEC Standard Voltages, Edition 7.0, 2009-06 (English
version) (incorporated by reference, see § 82.168). Section 13.0.
Particulate Used in Standard Contaminated Refrigerant Sample
13.1 Particulate Specification
13.1.1 The particulate material (pm) will be a blend of 50
percent coarse air cleaner dust as received, and 50 percent
retained on a 200-mesh screen. The coarse air cleaner dust is
available from: AC Spark Plug Division; General Motors Corporation;
Flint, Michigan.
13.1.2 Preparation of Particulate Materials. To prepare
the blend of contaminant per ANSI/ASHRAE Standard 63.2-1996 (RA
2010), first wet screen a quantity of coarse air cleaner dust on a
200-mesh screen (particle retention 74 µm). This is done by placing
a portion of the dust on a 200-mesh screen and running water
through the screen while stirring the dust with the fingers. The
fine contaminant particles passing through the screen are
discarded. The larger than 200-mesh particles collected on the
screen are removed and dried for one hour at 110 °C. The blend of
standard contaminant is prepared by mixing 50 percent by weight of
coarse air cleaner dust as received (after drying for one hour at
110 °C) with 50 percent by weight of the larger than 200-mesh
screened dust.
13.1.3 Particle Size Analysis. The coarse air cleaner
dust as received and the blend used as the standard contaminant
have the following approximate particle size analysis:
Table B1 - Weight Percentage in Various µm
Size Ranges for Particle Size Analysis
Size range
(µm) |
As
received
(wt %) |
Blend
(wt %) |
0-5 |
12 |
6 |
5-10 |
12 |
6 |
10-20 |
14 |
7 |
20-40 |
23 |
11 |
40-80 |
30 |
32 |
80-200 |
9 |
38 |
[81 FR 82383, Nov. 18, 2016]