Dupont 507 Users Manual Retrofit Guidelines For Suva(R) HFC Refrigerants

: Dupont Dupont-507-Users-Manual-515051 dupont-507-users-manual-515051 dupont pdf

Open the PDF directly: View PDF .
Page Count: 20

Download
Open PDF In Browser	View PDF

Technical Information
ART-37

DuPont Suva
™

®

refrigerants

Retrofit Guidelines for
Suva HFC Refrigerants
®

Suva® 134a for R-12 Retrofit
Suva® HP62 and Suva® 507 for R-502 Retrofit
Suva® HP62 and Suva® 507 for R-22 Retrofit

The DuPont Oval Logo, DuPont™, The miracles of science™,
and Suva® are trademarks or registered trademarks of
E.I. du Pont de Nemours and Company.

Retrofit Guidelines for
Suva® HFC Refrigerants
Table of Contents
Page
Introduction ................................................................................................................ 1
R-12 Replacement Choices ..................................................................................... 1
R-502 Replacement Choices ................................................................................... 1
R-22 Replacement Choices ..................................................................................... 1
Using HFCs versus Service Refrigerants ............................................................ 1
Important Safety Information ................................................................................. 2
Lubricant and Filter Drier Information ................................................................ 2
Lubricants .................................................................................................................. 2
Filter Drier .................................................................................................................. 2
General Retrofit Information ................................................................................... 2
System Modifications ................................................................................................ 2
Refrigerant Recovery Information ............................................................................. 3
What to Expect Following a Retrofit .......................................................................... 3
Retrofit Summary for HFC Refrigerants .................................................................... 4
Retrofit of R-12 Systems to Suva® 134a ............................................................ 4
Retrofit of R-502 Systems to Suva® HP62 or Suva® 507 ............................... 5
Retrofit of R-22 Systems to Suva ® HP62 or Suva® 507 ................................. 6
Pressure/Temperature Charts—Introduction ........................................................ 8
How to Read the Pressure/Temperature Charts ....................................................... 8
How to Determine Suction Pressure, Superheat, and Subcool ................................. 8
Retrofit Checklist for Suva ® 134a, Suva® HP62, or Suva® 507 ...................... 9
System Data Sheet ................................................................................................. 10
Appendix
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.

Pressure/Temperature Chart—Suva® 134a/R-12 .....................................
Pressure/Temperature Chart—Suva® HP62/R-502 ..................................
Pressure/Temperature Chart—Suva® 507/R-502 .....................................
Pressure/Temperature Chart—Suva® HP62/R-22 ....................................
Pressure/Temperature Chart—Suva® 507/R-22 .......................................
Suva® 134a Physical Properties ...............................................................
Suva® HP62 and Suva® 507 Physical Properties .....................................
Compositions of Suva® Refrigerants ........................................................

11
12
13
14
15
16
16
16

DuPont Technical Assistance and Other Information ............................. back page

Introduction

• Suva® 407C (R-407C) is also an HFC retrofit
option for R-502 in certain equipment. Refer to
ART-34 “Retrofit Guidelines for Suva® 407C” for
details.

With the phaseout of CFCs and HCFCs, existing
refrigeration and air-conditioning equipment operating with CFCs and HCFCs will ultimately need to
be either replaced with new equipment or retrofitted
with alternative refrigerants. Some service technicians and equipment owners have elected to retrofit
to hydrofluorocarbon (HFC) refrigerants such as
Suva® 134a, Suva® HP62, or Suva® 507.

R-22 Replacement Choices
Suva® HP62 (R-404A) and Suva® 507 (R-507) are
HFC retrofit options for R-22 refrigeration equipment, especially for medium and low temperature
applications. These products will provide similar
cooling capacity at evaporator temperatures in the
range of 30°F to 50°F (–1°C to 10°C). At evaporator temperatures below 30°F (–1°C), the cooling
capacity is greater than R-22. At 0°F (–18°C) the
capacity is about 6% higher; and at –40°F (–40°C)
the capacity is about 30% higher.

Using these procedures, R-12, R-502, and R-22
equipment can be safely and efficiently retrofitted
with HFC-based Suva® refrigerants, allowing the
equipment to continue in service for the remainder
of its useful life. These retrofit guidelines are intended for equipment containing positive displacement compressors.

At evaporator temperatures above 10°F (–12°C)
there is an energy efficiency penalty of about 5
to 10%. At evaporator temperatures below 10°F
(–12°C) Suva® HP62 and 507 have similar energy
efficiency, increasing to about +20% at –40°F
(–40°C).

R-12 Replacement Choices
Suva® 134a (R-134a) is the long-term HFC replacement for R-12 in new equipment and for retrofitting some R-12 systems such as supermarket
display cases, commercial refrigeration and airconditioning equipment, appliances, and transport
refrigeration equipment. In stationary equipment
Suva® 134a is recommended for retrofit of equipment with evaporator temperatures above 20°F
(–7°C) to ensure best performance. Suva® 134a
may be used in existing equipment at lower
evaporator temperatures, but it can exhibit
reduced capacity compared with R-12 unless
system modifications are made.

Suva® HP62 and 507 will have higher discharge
pressure than R-22, but lower compression ratios;
and also lower discharge temperature.
• Suva® 407C (R-407C) should also be considered
as a retrofit option for R-22 in medium temperature equipment. It will provide similar cooling
capacity and energy efficiency at evaporator
temperatures above 25°F (4°C). Refer to ART-34
“Retrofit Guidelines for Suva® 407C” for details

R-502 Replacement Choices

Using HFCs versus Service
Refrigerants

• Suva® HP62 (R-404A) is widely recognized as
the preferred HFC replacement for R-502 in new
equipment and for retrofitting R-502 systems such
as supermarket and food service, industrial
freezing, and some transport refrigeration. Suva®
HP62 offers the closest HFC match to R-502
performance and can be used over the full R-502
operating range. Suva® HP62 also provides lower
compressor discharge temperatures than R-502,
which can increase compressor reliability and life.

Refrigerants such as Suva® MP39, Suva® 409A,
Suva® HP80 and Suva® 408A are often selected
for retrofit instead of HFCs because these service
refrigerants typically involve an easier and more
cost-effective retrofit procedure while providing
improved performance over the CFCs they replace.
The compressor oil change procedures are typically
less complicated with the service refrigerants, which
results in lower retrofit costs. Refer to DuPont bulletin ART-36 “Retrofit Guidelines for Suva® Service Refrigerants” for full details.

• Suva® 507 (R-507) is an HFC replacement
option for R-502 in new equipment and for
retrofitting R-502 systems. Suva® 507 can also
be used over the full R-502 operating range, and
provides lower compressor discharge temperatures
than R-502, which can increase compressor
reliability and life.

1

Important Safety Information

Lubricant and Filter Drier
Information

®

Like CFCs, Suva refrigerants are safe when
handled properly. However, any refrigerant can
cause injury or even death when mishandled. Please
review the following guidelines before using any
refrigerant.
• Do not work in high concentrations of refrigerant vapors. Always maintain adequate ventilation
in the work area. Do not breathe vapors. Do not
breathe lubricant mists from leaking systems.
Ventilate the area well after any leak before
attempting to repair equipment.

Lubricants
Lubricant selection is based on many factors, including compressor wear characteristics, material
compatibility, and lubricant/refrigerant miscibility
that can affect oil return to the compressor. Before
starting a retrofit, consult the compressor manufacturer to determine the correct lubricant for your
compressor. Other information sources are DuPont
Refrigerant Distributors, lubricant manufacturers,
and system manufacturers.

• Do not use handheld leak detectors to check for
breathable air. These detectors are not designed
to determine if the air is safe to breathe. Use
oxygen monitors to ensure adequate oxygen is
available to sustain life.

Polyol ester (POE) lubricants must be used with
Suva® 134a, Suva® HP62 or Suva® 507 refrigerants. These lubricants are available from DuPont
Refrigerant Distributors. To provide optimum oil
return, equipment using mineral oil or alkylbenzene
must be flushed to remove at least 95% of these
oils. See the retrofit procedures below for more
information.

• Do not use flames or torches to search for
leaks. Do not use flames in high concentrations
of refrigerant. Open flames release large quantities
of acidic compounds in the presence of all refrigerants, and these compounds can be hazardous.
Do not use torches as leak detectors. Old halide
torches detect chlorine, which may not be present
with new refrigerants. Use an electronic leak
detector designed to find the refrigerants you
are using.

Special care should be taken when handling POE
lubricants because of their tendency to absorb water. Minimize contact with air and store the lubricant in a sealed container.

Filter Drier
Change the filter drier during the retrofit. This is a
routine practice following system maintenance.
There are two types of filter driers commonly used,
solid core and packed bead.

If you detect a visible change in the size or color
of a flame when using torches to repair equipment, stop work immediately and leave the
area. Ventilate the work area well and stop any
refrigerant leaks before resuming work. These
flame effects may be an indication of very high
refrigerant concentrations, and continuing to work
without adequate ventilation may result in injury
or death.

Replace the drier with the same type you currently
use. The drier label will show which refrigerants can
be used with that drier. Check with your DuPont
Refrigerant Distributor for the correct drier to use
in your system.

General Retrofit Information

Note: Any refrigerant can be hazardous if used
improperly. Hazards include liquid or vapor under
pressure, and frostbite from the escaping liquid.
Overexposure to high concentrations of vapor
can cause asphyxiation and cardiac arrest. Please
read all safety information before handling any refrigerant.

System Modifications
The compositions of these Suva® refrigerants have
been selected to provide performance comparable
with the refrigerants they are replacing in terms of
both capacity and energy efficiency. As a result,
minimal system modifications are anticipated
with retrofitting. Suva® HP62 and Suva® 507 are
near-azeotropes at most temperatures, therefore the
vapor composition in the refrigerant cylinder is
slightly different from the liquid composition.
This small difference will not affect performance
in direct expansion systems, but it could affect performance in systems with flooded evaporators.

For more detailed information on the properties,
uses, storage, and handling of Suva® refrigerants,
see DuPont Technical Bulletin P-134a or P-HP, or
other literature specific to these products. Refer to
the appropriate Material Safety Data Sheet (MSDS)
for more safety information about each refrigerant.
DuPont Safety Bulletin AS-1 gives additional information for safe handling of refrigerants.

2

In the United States, DuPont will take back for
reclaim the Suva® refrigerants discussed in this
bulletin.

You should consult the original equipment manufacturer for recommendations concerning the compatibility of elastomers and plastics used in their system
and the new refrigerant. Although many system
components used with CFCs are also compatible
with Suva® refrigerants, there are exceptions that, if
not replaced, can cause refrigerant leakage or system failure.

What to Expect Following a Retrofit
These tables show approximate system performance
changes following a retrofit. These values are general guidelines for system behavior, and actual performance will vary with each system.

Field experience has shown that some systems
retrofitted directly from R-502 to Suva® HP62
or Suva® 507 can have increased leakage due to
shrinkage of elastomers (o-rings, gaskets) following removal of the R-502. This same situation
might exist in an R-22 retrofit. Replacement of
these elastomers may add additional cost and
time to the retrofit.

Suva® 134a is compared to R-12, Suva® HP62 and
Suva® 507 are compared to R-502.
Suva®
Refrig.
134a

Retrofits of R-12 or R-502 systems with other alternative refrigerants such as HCFC-22 may require
more extensive modifications to the existing equipment, such as replacement of the compressor with
multistage compressors or use of liquid injection.
For some systems this additional cost may be large.
Suva® refrigerants provide the service contractor
and equipment owner with a cost-effective way to
retrofit an existing system.

HP62
507

Disch.
Press.
psi (kPa)

Suct.
Press.
psi (kPa)

Disch.
Temp.
°F (°C)

Refrig.
Cap’y.
(%)

+10
(69.8)
+20
(+137.9)
+30
(+206.8)

–2
(–13.8)
Same

–10
(–5.6)
–10
(–5.6)
–15
(+8.3)

–10

Same

Same
Same

Suva® HP62 is compared to R-22 (evap. temp. =
0°F [–18°C]). Note: Suva® 507 provides performance very similar to HP62.

Note: Suva® refrigerants were not designed for use
in conjunction with other refrigerants or additives
that have not been clearly specified by DuPont or
the equipment manufacturer. Mixing Suva® refrigerants with other refrigerants, may have an adverse
effect on system performance. “Topping off” a
different refrigerant with any Suva® refrigerant is
not recommended.

Suva®
Refrig.
HP62

Disch.
Press.
psi (kPa)
+45
(+310)

Suct. Compression Disch. Refrig.
Press.
Ratio
Temp. Cap’y.
psi (kPa)
(%)
°F (°C)
(%)
+10
(+69.8)

–5

–64
(–36)

+6

How to read these tables
Example: R-12 to Suva® 134a retrofit. Discharge pressure
with 134a will be in the range of 10 psig higher than R-12
(using discharge pressure column above).

Refrigerant Recovery Information
Most recovery or recycle equipment used for R-12,
R-502, or R-22 can be used for Suva® refrigerants.
Use standard procedures to avoid cross-contamination when switching from one refrigerant to another.
Consult the equipment manufacturer for specific
recommendations.

3

operation of the system with the Suva® refrigerant. A System Data Sheet is included at the
back of this document to record baseline data.

Retrofit Summary for HFC
Refrigerants
Select the Retrofit Checklist from the Appendix for the refrigerant you are replacing.
1. Establish baseline performance with
CFC/HCFC.

2. Drain mineral oil or alkylbenzene from the
system and measure the volume removed.
Leave the CFC refrigerant in the system.
If mineral oil or alkylbenzene is the existing
lubricant, it will have to be drained. This may
require removing the compressor from the
system, particularly with small hermetic compressors that have no oil drain port. In this case,
the lubricant should be drained from the suction
port on the compressor after the R-12 has been
properly recovered. For an effective flush, it is
important to remove at least 50% of the lubricant in all cases. Larger systems may require
drainage from additional points in the system,
particularly low spots around the evaporator.
In systems with an oil separator, any lubricant
present in the separator should also be drained.

2. Drain mineral oil or alkylbenzene (MO/
AB) from the system and measure the
volume removed. Leave the CFC/HCFC
refrigerant in the system.
3. Add POE lubricant; use the same volume
as removed in Step 2. Start up system and
operate for at least 24 hours, or more if
system has complex piping.
4. Drain POE, and repeat steps 2 and 3 at
least two more times. Continue flushing
until MO/AB is less than 5% by weight
or as recommended by compressor
manufacturer.

In all cases, measure the volume of lubricant
removed from the system. Record this information on the Retrofit Checklist (see Appendix).
Compare this volume with the compressor/
system specifications to ensure that the majority
of lubricant has been removed. Consult the
compressor manufacturer for recommendations
on allowable residual MO/AB in POE lubricant.
If poor system performance is noted on start-up,
an additional lubricant change may be required.

5. Recover the CFC/HCFC charge into a
proper recovery cylinder.
6. Replace the filter/drier.
7. Evacuate system and check for leaks.
8. Charge with Suva® refrigerant. Remove
liquid only from charging cylinder for
Suva® HP62 or Suva® 507. Typical
charge is 75–90% by weight of
CFC/HCFC charge.

3. Add POE lubricant; use the same volume
as removed in Step 2. Start up system and
operate for at least 24 hours, or more if
system has complex piping. Charge the compressor with the same volume of new lubricant
as the amount you removed from the system in
step 2. Use a lubricant viscosity and grade
recommended by the compressor manufacturer
for the Suva® refrigerant you are using; or use a
similar viscosity to the oil you
removed if compressor information is not
available. A typical viscosity is 150 SUS or
ISO 32 for many compressors.

9. Start up system, adjust charge size. Label
system for the refrigerant and lubricant
used.
Retrofit Complete

Retrofit of R-12 Systems to
Suva® 134a
The following detailed discussion is the recommended procedure for retrofitting R-12 systems
to Suva® 134a.

4. Drain POE, and repeat steps 2 and 3 at least
two more times. Continue flushing until MO/
AB is less than 5% by weight or as recommended by compressor manufacturer. For
an HFC refrigerant to operate properly in a
retrofitted system, the residual MO/AB concentration must be very low. Repeatedly removing
and replacing the POE will flush the old oil
from the refrigeration system, providing that
enough time is allowed with each change to
circulate oil through the entire system.

1. Establish baseline performance with CFC.
Collect system performance data while the
R-12 is in the system. Check for correct refrigerant charge and operating conditions. The
baseline data of temperatures and pressures at
various points in the system (evaporator,
condenser, compressor suction and discharge,
superheat and subcool, etc.) at normal operating
conditions will be useful when optimizing

4

5. Recover the CFC charge into a proper
recovery cylinder. Use normal service practices. If the correct charge size is not known,
weigh the amount of refrigerant recovered.

heat, etc.). Attempting to charge until
the sight glass is clear may result in overcharging the refrigerant. Please read “How
to Determine Suction Pressure, Superheat and
Subcool” on page 8.

6. Replace the filter/drier. It is routine practice to
replace the filter/drier following system maintenance. Replacement driers are available that are
compatible with Suva® refrigerants. See page 2
of this manual for additional information on
driers.

Retrofit of R-502 Systems to
Suva® HP62 or Suva® 507
The following detailed discussion is the recommended procedure for retrofitting R-502 systems
to Suva® HP62 or Suva® 507.

7. Evacuate system and check for leaks. To
remove air or other noncondensables in the
system, evacuate the system to near full vacuum
(29.9 inHg vacuum [500 microns] or less than
10 kPa).

1. Establish baseline performance with CFC.
Collect system performance data while the
R-502 is in the system. Check for correct
refrigerant charge and operating conditions. The
baseline data of temperatures and pressures
at various points in the system (evaporator,
condenser, compressor suction and discharge,
superheat and subcool, etc.) at normal operating
conditions will be useful when optimizing
operation of the system with the Suva® refrigerant. A System Data Sheet is included at the
back of this document to record baseline data.

8. Charge with Suva® refrigerant. In general, the
refrigeration system will require less weight of
the Suva® 134a than of R-12. The optimum
charge will vary depending on the system design
and operating conditions. For most systems the
best charge size will be 75–90% by weight of
the original R-12 charge.
For best results:
• It is recommended that the system be initially
charged with about 75% by weight of the
original charge.
• Add the initial charge of Suva® refrigerant
to the high-pressure side of the system
(compressor not running) until the system
and cylinder pressures equalize. Then connect
to the low-pressure side of the system, start
the compressor, and load the remainder of the
refrigerant slowly to the suction side of the
system.

2. Drain mineral oil or alkylbenzene from the
system and measure the volume removed.
Leave the CFC refrigerant in the system. If
mineral oil or alkylbenzene is the existing
lubricant, it will have to be drained. This may
require removing the compressor from the
system, particularly with small hermetic compressors that have no oil drain port. In this case,
the lubricant should be drained from the suction
port on the compressor after the R-502 has been
properly recovered. For an effective flush, it is
important to remove at least 50% of the lubricant in all cases. Larger systems may require
drainage from additional points in the system,
particularly low spots around the evaporator. In
systems with an oil separator, any lubricant
present in the separator should also be drained.

9. Start up system, adjust charge size. Label
system for the refrigerant and lubricant used.
Start the system and let conditions stabilize. If
the system is undercharged, add Suva® 134a in
small amounts until the system conditions reach
the desired level. See the Pressure/Temperature
Charts in this bulletin to compare pressures and
temperatures.

In all cases, measure the volume of lubricant
removed from the system. Record this information on the Retrofit Checklist (see Appendix).
Compare this volume with the compressor/
system specifications to ensure that the majority
of lubricant has been removed. Consult the
compressor manufacturer for recommendations
on allowable residual MO/AB in POE lubricant.
If poor system performance is noted on start-up,
an additional lubricant change may be required.

Suva® refrigerants are more sensitive to charge
size than CFCs. System performance will
change quickly if the system is overcharged
or undercharged. Sight glasses in the liquid
line can be used in most cases as a guide, but
system charge should also be determined
by measuring system operating conditions
(discharge and suction pressures, suction line
temperature, compressor motor amps, super-

5

For best results:
• It is recommended that the system be initially
charged with about 75% by weight of the
original charge.
• Add the initial charge of Suva® refrigerant to
the high-pressure side of the system (compressor not running) until the system and
cylinder pressures equalize. Then connect to
the low-pressure side of the system, start the
compressor, and load the remainder of the
refrigerant slowly to the suction side of the
system. You should be removing liquid from
the charging cylinder, and therefore should
charge slowly to allow the refrigerant to flash
(vaporize) before entering the compressor
suction and avoid compressor damage.

3. Add POE lubricant; use the same volume
as removed in Step 2. Start up system and
operate for at least 24 hours, or more if
system has complex piping. Charge the compressor with the same volume of new lubricant
as the amount you removed from the system in
step 2. Use a lubricant viscosity and grade
recommended by the compressor manufacturer
for the Suva® refrigerant you are using; or use a
similar viscosity to the MO/AB you removed if
compressor information is not available. A
typical viscosity is 150 SUS or ISO 32 for
many compressors.
4. Drain POE, and repeat steps 2 and 3 at
least two more times. Continue flushing until
MO/AB is less than 5% by weight or as
recommended by compressor manufacturer.
For an HFC refrigerant to operate properly in a
retrofitted system, the residual MO/AB concentration must be very low. Repeatedly removing
and replacing the POE will flush the old oil
from the refrigeration system, providing that
enough time is allowed with each change to
circulate oil through the entire system.

9. Start up system, adjust charge size. Label
system for the refrigerant and lubricant used.
Start the system and let conditions stabilize. If
the system is undercharged, add Suva® HP62 or
Suva® 507 in small amounts (still removing
liquid from the charging cylinder) until the
system conditions reach the desired level. See
the Pressure/Temperature Charts in this bulletin
to compare pressures and temperatures for the
Suva® refrigerant you are using.

5. Recover the CFC charge into a proper
recovery cylinder. Use normal service practices. If the correct charge size is not known,
weigh the amount of refrigerant recovered.

Suva® refrigerants are more sensitive to charge
size than CFCs. System performance will
change quickly if the system is overcharged
or undercharged. Sight glasses in the liquid
line can be used in most cases as a guide, but
system charge should also be determined
by measuring system operating conditions
(discharge and suction pressures, suction line
temperature, compressor motor amps, superheat, etc.). Attempting to charge until
the sight glass is clear may result in overcharging the refrigerant. Please read “How
to Determine Suction Pressure, Superheat, and
Subcool” on page 8.

6. Replace the filter/drier. It is routine practice to
replace the filter/drier following system maintenance. Replacement driers are available that are
compatible with Suva® refrigerants. See page 2
of this manual for additional information on
driers.
7. Evacuate system and check for leaks. To
remove air or other noncondensables in the
system, evacuate the system to near full vacuum
(29.9 inHg vacuum [500 microns] or less than
10 kPa).
8. Charge with Suva® refrigerant. Remove
liquid only from charging cylinder. The
proper cylinder position for liquid removal is
indicated by arrows on the cylinder and
cylinder box. Once liquid is removed from the
cylinder, the refrigerant can be charged to the
system as liquid or vapor as desired. Use the
manifold gauges or a throttling valve to flash
the liquid to vapor if required.

Retrofit of R-22 Systems to
Suva® HP62 or Suva® 507
The following detailed discussion is the recommended procedure for retrofitting R-22 systems
to Suva® HP62 or Suva® 507.
1. Establish baseline performance with R-22.
Collect system performance data while the R-22
is in the system. Check for correct refrigerant
charge and operating conditions. The baseline
data of temperatures and pressures at various
points in the system (evaporator, condenser,
compressor suction and discharge, superheat
and subcool, etc.) at normal operating conditions will be useful when optimizing operation

In general, the refrigeration system will require
less weight of the Suva® refrigerant than of
R-502. The optimum charge will vary depending on the system design and operating conditions, but for most systems the best charge size
will be 75–90% by weight of the original charge.
6

of the system with the Suva® refrigerant. A
System Data Sheet is included at the back of
this document to record baseline data.

from the refrigeration system, providing that
enough time is allowed with each change to
circulate oil through the entire system.
5. Recover the R-22 charge into a proper
recovery cylinder. Use normal service practices. If the correct charge size is not known,
weigh the amount of refrigerant recovered.

2. Drain mineral oil or alkylbenzene from the
system and measure the volume removed.
Leave the R-22 in the system. If mineral oil or
alkylbenzene is the existing lubricant, it will
have to be drained. This may require removing
the compressor from the system, particularly
with small hermetic compressors that have no
oil drain port. In this case, the lubricant should
be drained from the suction port on the compressor after the R-22 has been properly
recovered. For an effective flush, it is important
to remove at least 50% of the lubricant in all
cases. Larger systems may require drainage
from additional points in the system, particularly low spots around the evaporator. In
systems with an oil separator, any lubricant
present in the separator should also be drained.

6. Replace the filter/drier. It is routine practice to
replace the filter/drier following system maintenance. Replacement driers are available that are
compatible with Suva® refrigerants. See page 2
of this manual for additional information on
driers.
7. Evacuate system and check for leaks. To
remove air or other noncondensables in the
system, evacuate the system to near full vacuum
(29.9 inHg vacuum [500 microns] or less than
10 kPa).
8. Charge with Suva® refrigerant. Remove
liquid only from charging cylinder. The
proper cylinder position for liquid removal is
indicated by arrows on the cylinder and
cylinder box. Once liquid is removed from the
cylinder, the refrigerant can be charged to the
system as liquid or vapor as desired. Use the
manifold gauges or a throttling valve to flash
the liquid to vapor if required.

In all cases, measure the volume of lubricant
removed from the system. Record this information on the Retrofit Checklist (see Appendix).
Compare this volume with the compressor/
system specifications to ensure that the majority
of lubricant has been removed. Consult the
compressor manufacturer for recommendations
on allowable residual MO/AB in POE lubricant.
If poor system performance is noted on start-up,
an additional lubricant change may be required.

In general, the refrigeration system will require
less weight of the Suva® refrigerant than of R22. The optimum charge will vary depending on
the system design and operating conditions, but
for most systems the best charge size will be
75–90% by weight of the original charge.

3. Add POE lubricant; use the same volume
as removed in Step 2. Start up system and
operate for at least 24 hours, or more if
system has complex piping. Charge the compressor with the same volume of new lubricant
as the amount you removed from the system in
step 2. Use a lubricant viscosity and grade
recommended by the compressor manufacturer
for the Suva® refrigerant you are using; or use a
similar viscosity to the MO/AB you removed if
compressor information is not available. A
typical viscosity is 150 SUS or ISO 32 for
many compressors.

For best results:
• It is recommended that the system be initially
charged with about 75% by weight of the
original charge.
• Add the initial charge of Suva® refrigerant to
the high-pressure side of the system (compressor not running) until the system and
cylinder pressures equalize. Then connect to
the low-pressure side of the system, start the
compressor, and load the remainder of the
refrigerant slowly to the suction side of the
system. You should be removing liquid from
the charging cylinder, and therefore should
charge slowly to allow the refrigerant to flash
(vaporize) before entering the compressor
suction and avoid compressor damage.

4. Drain POE, and repeat steps 2 and 3 at
least two more times. Continue flushing until
MO/AB is less than 5% by weight or as
recommended by compressor manufacturer.
For an HFC refrigerant to operate properly in a
retrofitted system, the residual MO/AB concentration must be very low. Repeatedly removing
and replacing the POE will flush the old oil

7

• Head pressure controls
• Crankcase pressure regulators
• Others

9. Start up system, adjust charge size. Label
system for the refrigerant and lubricant used.
Start the system and let conditions stabilize. If
the system is undercharged, add Suva® HP62 or
Suva® 507 in small amounts (still removing
liquid from the charging cylinder) until the
system conditions reach the desired level. See
the Pressure/Temperature Charts in this bulletin
to compare pressures and temperatures for the
Suva® refrigerant you are using.

Due to the higher oil miscibility with HFCs and
POE, verify proper compressor oil sump levels.
Check with the compressor manufacturer for proper
amperage load ratings.

Pressure/Temperature Charts –
Introduction

Suva® refrigerants are more sensitive to charge
size than R-22. System performance will change
quickly if the system is overcharged or undercharged. Sight glasses in the liquid line can be
used in most cases as a guide, but system charge
should also be determined by measuring system
operating conditions (discharge and suction
pressures, suction line temperature, compressor
motor amps, superheat, etc.). Attempting to
charge until the sight glass is clear may result
in overcharging the refrigerant. Please read
“How to Determine Suction Pressure, Superheat, and Subcool” below.

How to Read the Pressure/Temperature
Charts
Tables 1 through 5 contain pressure/temperature
charts for the refrigerants discussed in this bulletin.
R-12, R-22 and Suva® 134a are all single component refrigerants with no temperature “glide” in
the evaporator or condenser. Suva® HP62 and 507
have very small glide (less than 1F [0.6C]). For
field service purposes, this glide can be neglected in
calculating superheat and subcool. The evaporator
temperature can be considered equal to the saturated
vapor temperature at the compressor suction pressure; the condenser temperature can be considered
equal to the saturated vapor temperature or the saturated liquid temperature at the compressor discharge
pressure. For Suva® HP62 and 507, the saturated
vapor temperatures are listed in the tables.

“Helpful Hints” For Retrofit From R-22
To Suva® HP62 or 507
Both Suva® HP62 and 507 have minimal “temperature glide” and can be used in systems that have
flooded evaporators and condensers, as well as those
that have direct expansion evaporators.

How to Determine Suction Pressure,
Superheat, and Subcool

Since HP62 and 507 have higher cooling capacity
than R-22,at lower evaporator temperatures the
expansion device may need to be adjusted or replaced to maintain proper flow control and superheat settings. Estimated capacity comparison:
Evaporator Temperature

Capacity

30 to 50°F (–1 to 10°C)

Same

0°F (–18°C)

+6%

–40°F (–40°C)

+30%

Suction Pressure
Determine the expected evaporator temperature
using the R-12, R-502 or R-22 column (from the
baseline data you collected prior to the retrofit).
Find the same expected evaporator temperature in
the column for Suva® 134a, HP62 or 507. Note the
corresponding pressure for this temperature. This
is the suction pressure at which the system should
operate.

Verify that compressor suction and discharge piping
is the proper size to maintain proper refrigerant
velocity and pressure drop.

Superheat and Subcool
Using the temperature column for Suva® 134a,
HP62 and 507, the amount of superheat and subcool
is calculated in the same manner as for the CFC or
HCFC refrigerant.

Compressor discharge temperature will be lower
than R-22.
The compressor discharge pressure will be higher
with HP62 and 507. Various pressure switches may
need to be adjusted to maintain proper operating
conditions; for example:
• Evaporator pressure regulators
• Cut-in and cut-out pressure switches
• Condenser fan cycling pressure switches

Note: The amount of vapor superheat is always
calculated from the actual saturated vapor temperature; the amount of liquid subcool is always calculated from the actual saturated liquid temperature.

8

Retrofit Checklist for
Suva 134a, Suva® HP62, or Suva® 507
®

_____ 1. Establish baseline performance with R-12, R-502, or R-22. (See data sheet for
recommended data.)
_____ 2. Consult the original equipment manufacturer of the system components for
recommendations on the following:
• Plastics compatibility
• Elastomers compatibility
• Lubricant (viscosity, manufacturer)
• Retrofit procedure to sustain warranty
_____ 3. Drain lubricant charge from the refrigerant system (unless polyol ester lubricant
is already in the system).
• Remove majority of lubricant from system.
• Measure amount of lubricant removed and record: _______________.
_____ 4. Charge polyol ester lubricant using amount equivalent to amount of mineral oil
removed. Run system with R-12, R-502, or R-22 for 24 hours, minimum.
_____ 5. Repeat lubricant drain and POE charging two more times or until mineral oil
content is less than 5%.
_____ 6. Remove R-12, R-502, or R-22 charge from system. (Need 10–20 inHg vacuum
[34–67 kPa].)
_____ 7. Replace filter drier with new drier approved for use with Suva® 134a, Suva® HP62, or
Suva® 507.
_____ 8. Reconnect system and evacuate with vacuum pump. (Evacuate to full vacuum
[29.9 inHg vacuum/0.14 kPa].)
_____ 9. Leak-check system. (Reevacuate system following leak check.)
_____ 10. Charge system with Suva®.
• Initially charge 75% by weight of original equipment manufacturer R-12, R-502,
or R-22 charge.
• Amount of refrigerant charged: _______________.
_____ 11. Start equipment and adjust charge until desired operating conditions are
achieved. If low in charge, add in increments of 2–3% of original R-12, R-502,
or R-22 charge.
• Amount of refrigerant charged: _______________.
• Total refrigerant charged: _______________.
_____ 12. Label components and system for type of refrigerant (Suva® 134a, Suva® HP62, or
Suva® 507) and lubricant (polyol ester).

Retrofit is complete.

9

System Data Sheet
Type of System/Location: _________________________________________________________________________________________
Equipment Mfg.: _________________________________

Compressor Mfg.: _______________________________

Model No.: _________________________________

Model No.: _______________________________

Serial No.: _________________________________
Original Charge Size: _________________________________

Serial No.: _______________________________
Original Lubricant:
Type/Mfg: _______________________________
Lubricant Charge Size: _______________________________
New Lubricant: _______________________________
Type/Mfg: _______________________________
1st Charge Size: _______________________________
2nd Charge Size: _______________________________
Additional Charge Size: _______________________________

Drier Mfg.: _________________________________

Drier Type (check one):

Model No.: _________________________________

Loose Fill: _______________________________

_________________________________

Solid Core: _______________________________

Condenser Cooling Medium (air/water):
Expansion Device (check one):

________________________________________________________________________
Capillary Tube: _________________________________________________________
Expansion Valve: _______________________________________________________

If Expansion Valve:
Manufacturer: _________________________________________________________________________________________
Model No.: ____________________________________________________________________________________________
Control/Set Point: _______________________________________________________________________________________
Location of Sensor: _____________________________________________________________________________________
Other System Controls (ex.: head press control), Describe: ______________________________________________________________
___________________________________________________________________________________________________________
(circle units used where applicable)
Date/Time
Refrigerant
Charge Size (lb, oz/g)
Ambient Temp. (°F/°C)
Relative Humidity
Compressor:
Suction T (°F/°C)
Suction P (psi/kPa/bar)
Discharge T (°F/°C)
Discharge P (psi/kPa/bar)
Box/CaseT (°F/°C)
Evaporator:
Refrigerant Inlet T (°F/°C)
Refrigerant Outlet T (°F/°C)
Coil Air/H2O In T (°F/°C)
Coil Air/H2O Out T (°F/°C)
Refrigerant T at Superheat Ctl. Pt. (°F/°C)
Condenser:
Refrigerant Inlet T (°F/°C)
Refrigerant Outlet T (°F/°C)
Coil Air/H2O In T (°F/°C)
Coil Air/H2O Out T (°F/°C)
Exp. Device Inlet T (°F/°C)
Motor Amps
Run/Cycle Time
Comments: ________________________________________________________________________________________________
_________________________________________________________________________________________________________

10

Appendix
Table 1
Pressure/Temperature Chart
Suva® 134a/R-12 Saturation Properties
SI Units

English Units

Pressure, psi
15*
10*
5*
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
110
120
130
140
150
165
180
195
210
225
240
255
270
285
300

R-12
HFC-134a
Saturation
Saturation
Temperature, °F Temperature, °F
–49
–38
–29
–22
–9
2
10
18
26
32
38
43
48
53
58
62
66
70
74
77
81
84
87
90
96
102
107
112
117
123
130
136
141
147
152
157
162
166
170

Pressure, kPa
25
50
75
100
125
150
175
200
225
250
275
300
325
350
375
400
450
500
550
600
650
700
750
800
900
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
3200
3400
3600

–40
–30
–22
–15
–3
7
15
22
29
35
40
45
50
54
58
62
66
69
73
76
79
82
85
88
93
98
103
107
112
118
123
129
134
139
143
148
152
156
160

*inHg, vacuum

11

R-12
HFC-134a
Saturation
Saturation
Temperature, °C Temperature, °C
–59
–45
–37
–30
–24
–20
–16
–12
–9
–6
–4
–1
2
4
6
8
12
16
19
22
25
28
30
33
37
42
49
56
62
68
73
78
82
86
90
94
98
101
104

–53
–40
–32
–26
–21
–17
–13
–10
–7
–4
–2
1
3
5
7
9
12
16
19
22
24
27
29
31
36
39
46
52
58
63
67
72
76
79
83
86
89
93
95

Table 2
Pressure/Temperature Chart
Suva® HP62/R-502 Saturation Properties
English Units

SI Units
R-502
HP62
R-502
HP62
Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,
kPa
°C
°C
kPa
°C
°C

R-502
HP62
R-502
HP62
Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,
psi
°F
°F
psi
°F
°F
25*
20*
15*
10*
5*
4*
3*
2*
1*
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56

–108
–88
–75
–65
–56
–55
–54
–53
–52
–50
–45
–40
–36
–32
–29
–25
–22
–19
–16
–13
–11
–8
–6
–3
–1
1
3
5
7
9
11
13
15
16
18
20
21
23

–107
–87
–75
–65
–57
–56
–54
–53
–52
–50
–45
–41
–37
–33
–30
–26
–23
–20
–18
–15
–12
–10
–7
–5
–3
–1
2
3
5
7
9
11
12
14
16
17
19
20

58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
105
110
115
120
125
130
135
140
145
150
175
200
250
300
350
400

24
26
27
29
30
32
33
34
36
37
38
40
41
42
43
45
46
47
48
49
50
51
54
57
60
62
64
67
69
71
73
75
85
95
111
125
137
148

25
50
75
100
125
150
175
200
225
250
275
300
325
350
375
400
425
450
475
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400

22
23
25
26
28
29
30
32
33
34
35
36
37
38
40
41
43
44
45
46
47
48
51
53
56
58
60
63
65
67
69
71
81
89
104
118
129
140

*inHg, vacuum

12

–72
–60
–52
–46
–41
–37
–33
–30
–27
–24
–22
–19
–17
–15
–13
–11
–9
–8
–6
–4
–1
2
4
7
9
11
13
15
17
19
21
23
25
26
28
29
31
32

–71
–59
–52
–46
–41
–37
–34
–30
–28
–25
–22
–20
–18
–16
–14
–12
–10
–9
–7
–6
–3
0
2
5
7
9
11
13
15
17
19
20
22
24
25
27
28
30

1450
1500
1550
1600
1650
1700
1750
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900

34
35
37
38
39
41
42
43
46
48
50
52
54
56
58
60
62
64
65

31
32
34
35
36
37
38
40
42
44
46
48
50
52
54
56
57
59
61

Table 3
Pressure/Temperature Chart
Suva® 507/R-502 Saturation Properties
English Units

SI Units
R-502
507
R-502
507
Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,
kPa
°C
°C
kPa
°C
°C

R-502
507
R-502
507
Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,
psi
°F
°F
psi
°F
°F
25*
20*
15*
10*
5*
4*
3*
2*
1*
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56

–108
–88
–75
–65
–56
–55
–54
–53
–52
–50
–45
–40
–36
–32
–29
–25
–22
–19
–16
–13
–11
–8
–6
–3
–1
1
3
5
7
9
11
13
15
16
18
20
21
23

–110
–90
–77
–67
–61
–59
–58
–57
–56
–54
–48
–44
–39
–36
–32
–29
–26
–23
–20
–17
–15
–12
–10
–8
–6
–3
–1
1
3
4
6
8
10
11
13
15
16
18

58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
105
110
115
120
125
130
135
140
145
150
175
200
250
300
350
400

24
26
27
29
30
32
33
34
36
37
38
40
41
42
43
45
46
47
48
49
50
51
54
57
60
62
64
67
69
71
73
75
85
95
111
125
137
148

25
50
75
100
125
150
175
200
225
250
275
300
325
350
375
400
425
450
475
500
550
600
650
700
750
800
850
900
950

19
21
22
24
25
26
28
29
30
32
33
34
35
37
38
39
40
41
42
43
44
46
48
51
53
55
58
60
62
64
66
69
78
87
102
115
127
137

*inHg, vacuum

13

–72
–60
–52
–46
–41
–37
–33
–30
–27
–24
–22
–19
–17
–15
–13
–11
–9
–8
–6
–4
–1
2
4
7
9
11
13
15
17

–72
–61
–53
–47
–43
–39
–35
–32
–29
–26
–24
–22
–19
–17
–15
–14
–12
–10
–9
–7
–4
–2
1
4
6
8
10
12
14

1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900

19
21
23
25
26
28
29
31
32
34
35
37
38
39
41
42
43
46
48
50
52
54
56
58
60
62
64
65

16
17
19
21
22
24
25
27
28
30
31
32
34
35
36
37
38
41
43
45
47
49
51
53
54
56
58
59

Table 4
Pressure/Temperature Chart
Suva® HP62/R-22 Saturation Properties
English Units

SI Units
R-22
HP62
R-22
HP62
Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,
kPa
°C
°C
kPa
°C
°C

R-22
HP62
R-22
HP62
Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,
psi
°F
°F
psi
°F
°F
25*
20*
15*
10*
5*
4*
3*
2*
1*
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56

–100
–80
–66
–56
–48
–47
–45
–44
–43
–41
–36
–32
–28
–24
–20
–17
–14
–11
–8
–5
–2
0
2
5
7
9
11
13
15
17
19
21
23
24
26
28
29
31

–107
–87
–75
–65
–57
–56
–54
–53
–52
–50
–45
–41
–37
–33
–30
–26
–23
–20
–18
–15
–12
–10
–7
–5
–3
–1
2
3
5
7
9
11
12
14
16
17
19
20

58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
105
110
120
125
130
135
140
145
150
175
200
250
300
350
400

32
34
35
37
38
40
41
42
44
45
46
48
49
50
51
52
54
55
56
57
58
59
62
64
69
72
74
76
78
81
83
93
101
117
131
143
154

25
50
75
100
125
150
175
200
225
250
275
300
325
350
375
400
425
450
475
500
550
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400

22
23
25
26
28
29
30
32
33
34
35
36
37
38
40
41
43
44
45
46
47
48
51
53
58
60
63
65
67
69
71
81
89
104
118
129
140

*inHg, vacuum

14

–67
–55
–47
–41
–36
–32
–28
–25
–22
–20
–17
–15
–12
–10
–8
–7
–5
–3
–1
0
3
6
8
11
13
15
18
20
22
23
25
27
29
30
32
33
35
36

–71
–59
–52
–46
–41
–37
–34
–30
–28
–25
–22
–20
–18
–16
–14
–12
–10
–9
–7
–6
–3
0
2
5
7
9
11
13
15
17
19
20
22
24
25
27
28
30

1450
1500
1550
1600
1650
1700
1750
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900

38
39
40
42
43
44
46
47
49
51
53
56
58
59
61
63
65
67
68

31
32
34
35
36
37
38
40
42
44
46
48
50
52
54
56
57
59
61

Table 5
Pressure/Temperature Chart
Suva® 507/R-22 Saturation Properties
English Units

SI Units
R-22
507
R-22
507
Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,
kPa
°C
°C
kPa
°C
°C

R-22
507
R-22
507
Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,
psi
°F
°F
psi
°F
°F
25*
20*
15*
10*
5*
4*
3*
2*
1*
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56

–100
–80
–66
–56
–48
–47
–45
–44
–43
–41
–36
–32
–28
–24
–20
–17
–14
–11
–8
–5
–2
0
2
5
7
9
11
13
15
17
19
21
23
24
26
28
29
31

–110
–90
–77
–67
–61
–59
–58
–57
–56
–54
–48
–44
–39
–36
–32
–29
–26
–23
–20
–17
–15
–12
–10
–8
–6
–3
–1
1
3
4
6
8
10
11
13
15
16
18

58
60
62
64
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
105
110
120
125
130
135
140
145
150
175
200
250
300
350
400

32
34
35
37
38
40
41
42
44
45
46
48
49
50
51
52
54
55
56
57
58
59
62
64
69
72
74
76
78
81
83
93
101
117
131
143
154

25
50
75
100
125
150
175
200
225
250
275
300
325
350
375
400
425
450
475
500
550
600
650
700
750
800
850
900
950

19
21
22
24
25
26
28
29
30
32
33
34
35
37
38
39
40
41
42
43
44
46
48
51
55
58
60
62
64
66
69
78
87
102
115
127
137

*inHg, vacuum

15

–67
–55
–47
–41
–36
–32
–28
–25
–22
–20
–17
–15
–12
–10
–8
–7
–5
–3
–1
0
3
6
8
11
13
15
18
20
22

–72
–61
–53
–47
–43
–39
–35
–32
–29
–26
–24
–22
–19
–17
–15
–14
–12
–10
–9
–7
–4
–2
1
4
6
8
10
12
14

1000
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
1550
1600
1650
1700
1750
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900

23
25
27
29
30
32
33
35
36
38
39
40
42
43
44
46
47
49
51
53
56
58
59
61
63
65
67
68

16
17
19
21
22
24
25
27
28
30
31
32
34
35
36
37
38
41
43
45
47
49
51
53
54
56
58
59

Table 6
Suva® 134a (R-134a) Physical Properties
Unit

Suva® 134a (R-134a)

R-12

°F
°C

–14.9
–26.1

–21.6
–29.8

psia
kPa

96.61
666.1

94.51
651.6

Liquid Density
at 77°F (25°C)

lb/ft3
kg/m3

75.28
1,206

81.84
1,311

Density
Sat’d Vapor at 77°F (25°C)

lb/ft3
kg/m3

2.02
32.4

2.32
37.2

Ozone-Depletion Potential
Compared with CFC-12

CFC-12 = 1

0

1

Global Warming Potential
Compared with CO2

CO2 = 1

1300

8500

Physical Property
Boiling Point at 1 atm
Vapor Pressure
Sat’d Liquid at 77°F (25°C)

Table 7
Suva® HP62 (R-404A) and Suva® 507 (R-507) Physical Properties

Unit

Suva® HP62
(R-404A)

Suva® 507
(R-507)

R-502

R-22

°F
°C

–51.6
–46.5

–52.1
–46.7

–49.8
–45.4

–41.4
–40.8

psia
kPa

182
1,255

187
1,287

168
1,162

151
1,041

Liquid Density
at 77°F (25°C)

lb/ft3
kg/m3

65.45
1,048

65.5
1,049

75.9
1,217

74.5
1193

Density
Sat’d Vapor at 77°F (25°C)

lb/ft3
kg/m3

4.0
64.1

4.3
68.9

4.2
67.3

2.8
44.9

Ozone-Depletion Potential
Compared with R-12

R-12 = 1

0

0

0.23

0.05

Global Warming Potential
Compared with CO2

CO2 = 1

3260

3300

5494

1700

Physical Property
Boiling Point at 1 atm
Vapor Pressure
Sat’d Liquid at 77°F (25°C)

Table 8
Compositions of Suva® Refrigerants
Compositions, wt%

HFC-125

HFC-143a

Suva® HP62 (R-404A)

44

52

Suva® 507 (R-507)

50

50

®

Suva 134a (R-134a)

HFC-134a
4

100

16

13

For Further Information:
DuPont Fluorochemicals
Wilmington, DE 19880-0711
(800) 235-SUVA
www.suva.dupont.com

Europe

Japan

DuPont de Nemours
International S.A.
2 Chemin du Pavillon
P.O. Box 50
CH-1218 Le Grand-Saconnex
Geneva, Switzerland
41-22-717-5111

Mitsui DuPont Fluorochemicals
Co., Ltd.
Chiyoda Honsha Bldg.
5-18, 1-Chome Sarugakucho
Chiyoda-Ku, Tokyo 101-0064 Japan
81-3-5281-5805

Canada
DuPont Canada, Inc.
P.O. Box 2200, Streetsville
Mississauga, Ontario
Canada
L5M 2H3
(905) 821-3300

Mexico
DuPont, S.A. de C.V.
Homero 206
Col. Chapultepec Morales
C.P. 11570 Mexico, D.F.
52-5-722-1100

South America
DuPont do Brasil S.A.
Alameda Itapecuru, 506
Alphaville 06454-080 Barueri
São Paulo, Brazil
55-11-7266-8263
DuPont Argentina S.A.
Casilla Correo 1888
Correo Central
1000 Buenos Aires, Argentina
54-1-311-8167

Pacific
DuPont Australia
P.O. Box 930
North Sydney, NSW 2060
Australia
61-2-99236111

Asia
DuPont Taiwan
P.O. Box 81-777
Taipei, Taiwan
886-2-514-4400
DuPont China Limited
P.O. Box TST 98851
1122 New World Office Bldg.
(East Wing)
Tsim Sha Tsui
Kowloon, Hong Kong
Phone: 852-734-5398
Fax: 852-236-83516
DuPont Thailand Ltd.
9-11 Floor, Yada Bldg.
56 Silom Road
Suriyawongse, Bankrak
Bangkok 10500
Phone: 66-2-238-0026
Fax: 66-2-238-4396
DuPont China Ltd.
Rm. 1704, Union Bldg.
100 Yenan Rd. East
Shanghai, PR China 200 002
Phone: 86-21-328-3738
Telex: 33448 DCLSH CN
Fax: 86-21-320-2304

DuPont Far East Inc.
6th Floor Bangunan Samudra
No. 1 JLN. Kontraktor U1/14, SEK U1
Hicom-Glenmarie Industrial Park
40150 Shah Alam, Selangor Malaysia
Phone 60-3-517-2534
DuPont Korea Inc.
4/5th Floor, Asia Tower
#726, Yeoksam-dong, Kangnam-ku
Seoul, 135-082, Korea
82-2-721-5114
DuPont Singapore Pte. Ltd.
1 Maritime Square #07 01
World Trade Centre
Singapore 0409
65-273-2244
DuPont Far East, Philippines
8th Floor, Solid Bank Bldg.
777 Paseo de Roxas
Makati, Metro Manila
Philippines
Phone: 63-2-818-9911
Fax: 63-2-818-9659
DuPont Far East Inc.
7A Murray’s Gate Road
Alwarpet
Madras, 600 018, India
91-44-454-029
DuPont Far East Inc.—Pakistan
9 Khayaban-E-Shaheen
Defence Phase 5
Karachi, Pakistan
92-21-533-350
DuPont Far East Inc.
P.O. Box 2553/Jkt
Jakarta 10001, Indonesia
62-21-517-800

The information contained herein is based on technical data and tests which we believe to be reliable and is intended for use by persons having technical skill,
at their own discretion and risk. Because conditions of use are outside of DuPont control, we can assume no liability for results obtained or damages incurred
through the application of the data presented.

(5/02) 300229B Printed in U.S.A.
[Replaces: H-75326-2]
Reorder No.: H-75326-3



---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.3
Linearized                      : Yes
Encryption                      : Standard V1.2 (40-bit)
User Access                     : Print, Copy, Annotate, Fill forms, Extract, Assemble, Print high-res
Create Date                     : 2002:05:31 15:43:01Z
Subject                         : DuPont Suva refrigerants technical literature
Keywords                        : dupont, suva, refrigerants, retrofit, guidelines, hfc, 134a, r-12, hp62, 507, r-502, r-22
Modify Date                     : 2002:06:14 11:16:45-04:00
Page Count                      : 20
Creation Date                   : 2002:05:31 15:43:01Z
Producer                        : Acrobat Distiller 3.01 for Windows
Author                          : DuPont Fluorochemicals
Mod Date                        : 2002:06:14 11:16:45-04:00
Description                     : DuPont Suva refrigerants technical literature
Creator                         : DuPont Fluorochemicals
Title                           : Retrofit Guidelines for Suva(R) HFC Refrigerants

EXIF Metadata provided by EXIF.tools