DuPont HP62, 507, 134A User Manual

Download

Technical Information

ART-37

DuPont

refrigerants



Suva

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. Pressure/Temperature Chart—Suva® 134a/R-12..................................... 11

Table 2. Pressure/Temperature Chart—Suva® HP62/R-502.................................. 12

Table 3. Pressure/Temperature Chart—Suva® 507/R-502..................................... 13

Table 4. Pressure/Temperature Chart—Suva® HP62/R-22.................................... 14

Table 5. Pressure/Temperature Chart—Suva® 507/R-22....................................... 15

Table 6. Suva® 134a Physical Properties ............................................................... 16

Table 7. Suva® HP62 and Suva® 507 Physical Properties ..................................... 16

Table 8. Compositions of Suva® Refrigerants ........................................................ 16

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

Introduction

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.

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

R-12 Replacement Choices

Suva® 134a (R-134a) is the long-term HFC re- placement 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 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.

R-502 Replacement Choices

• 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 compressor discharge temperatures than R-502, wh i ch can increase compressor reliability and life.

• Suva

507 (R-507) is an HFC replacement

option for R-502 in new equipment and for retrofitting R-502 systems. Suva 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.

refrigerants, allowing the

134a

HP62 also provides lower

507 can also

• 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.

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.

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).

HP62 and 507 will have higher discharge

Suva

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

Using HFCs versus Service Refrigerants

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 vice Refrigerants” for full details.

Ser-

Important Safety 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 refriger- ant 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.

Lubricant and Filter Drier

Information

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.

• 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.

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.

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.

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.

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.

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.

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.

General Retrofit Information

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 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.

HP62 and Suva® 507 are

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.

Field experience has shown that some systems

retrofitted directly from R-502 to Suva or Suva

507 can have increased leakage due to

HP62

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.

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.

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.

In the United States, DuPont will take back for

reclaim the Suva

refrigerants discussed in this

bulletin.

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.

134a is compared to R-12, Suva® HP62 and

Suva

507 are compared to R-502.

Suva

Disch. Suct. Disch. Refrig.

Suva Refrig. psi (kPa) psi (kPa) °F (°C) (% )

134a +10 –2 –10 –10

HP62 +20 Same –10 Same

507 +30 Same –15 Same

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

Suva Refrig. psi (kPa) psi (kPa) ( %) °F (°C) (% )

HP62 +45 +10 –5 –64 +6

Press. Press. Temp. Cap’y.

(69.8) (–13.8) (–5.6)

(+137.9) (–5.6)

(+206.8) (+8.3)

507 provides perfor-

Disch. Suct. Compression Disch. Refrig.

Press. Press. Ratio Temp. Cap’y.

(+310) (+69.8) (–36)

Refrigerant Recovery Information

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

refrigerants.

How to read these tables

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

134a retrofit. Discharge pressure

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 (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.

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.

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

Retrofit Complete

Retrofit of R-12 Systems to

Suva

The following detailed discussion is the recommended procedure for retrofitting R-12 systems to Suva

1. Establish baseline performance with CFC.

134a

134a.

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

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

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.

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.

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 com-

pressor 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.

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.

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.

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. 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

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.

refrigerants are more sensitive to charge

Suva 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-

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.

Retrofit of R-502 Systems to

Suva

The following detailed discussion is the recommended procedure for retrofitting R-502 systems to Suva

1. Establish baseline performance with CFC.

2. Drain mineral oil or alkylbenzene from the

HP62 or Suva® 507

HP62 or Suva® 507.

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

refriger-

ant. A System Data Sheet is included at the back of this document to record baseline data.

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.

In all cases, measure the volume of lubricant removed from the system. Record this informatio n o n th e R etro fit C he cklist (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.

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 com-

pressor 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.

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.

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 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 f o r mo st systems the best charge size will be 75–90% by weight of the original 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. 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.

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

Suva

507 in small amounts (still removing

HP62 or

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.

refrigerants are more sensitive to charge

the sight glass is clear may result in overcharging the refrigerant. Please read “How

to Determine Suction Pressure, Superheat, and Subcool” on page 8.

Retrofit of R-22 Systems to

Suva

The following detailed discussion is the recommended procedure for retrofitting R-22 systems to Suva

1. Establish baseline performance with R-22.

HP62 or Suva® 507

HP62 or Suva® 507.

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

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.

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.

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 com-

pressor 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

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.

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 general, the refrigeration system will require less weight of the Suva

refrigerant than of R-

22. 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.

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

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

Suva

507 in small amounts (still removing

HP62 or

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.

refrigerants are more sensitive to charge

Suva 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.

“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.

• Head pressure controls

• Crankcase pressure regulators

• Others 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

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 nent refrigerants with no temperature “glide” in the evaporator or condenser. Suva 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 vapor temperatures are listed in the tables.

134a are all single compo-

HP62 and 507

HP62 and 507, the saturated

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%

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

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

How to Determine Suction Pressure, Superheat, and Subcool

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 corresponding pressure for this temperature. This is the suction pressure at which the system should operate.

Superheat and Subcool

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

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.

134a, HP62 or 507. Note the

134a,

Retrofit Checklist for

Suva

_____ 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%.

134a, Suva® HP62, or Suva® 507

_____ 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

Suva

507.

134a, Suva® HP62, or

_____ 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

Suva

507) and lubricant (polyol ester).

_______________.

134a, Suva® HP62, or

Retrofit is complete.

System Data Sheet

Type of System/Location: _________________________________________________________________________________________

Equipment Mfg.: _________________________________ Compressor Mfg.: _______________________________

Model No.: _________________________________ Model No.: _______________________________

Serial No.: _________________________________ Serial No.: _______________________________

Original Charge Size: _________________________________ 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: ________________________________________________________________________________________________

_________________________________________________________________________________________________________

Appendix

Table 1

Pressure/Temperature Chart

Suva® 134a/R-12 Saturation Properties

English Units

R-12 HFC-134a

Saturation Saturation

Pressure, psi Temperature, °F Temperature, °F

15* –49 –40 10* –38 –30

5* –29 –22 0 –22 –15 5–9 –3

10 2 7 15 10 15 20 18 22 25 26 29 30 32 35 35 38 40 40 43 45 45 48 50 50 53 54 55 58 58 60 62 62 65 66 66 70 70 69 75 74 73 80 77 76 85 81 79 90 84 82

95 87 85 100 90 88 110 96 93 120 102 98 130 107 103 140 112 107 150 117 112 165 123 118 180 130 123 195 136 129 210 141 134 225 147 139 240 152 143 255 157 148 270 162 152 285 166 156 300 170 160

SI Units

R-12 HFC-134a

Saturation Saturation

Pressure, kPa Temperature, °C Temperature, °C

25 –59 –53 50 –45 –40

75 –37 –32 100 –30 –26 125 –24 –21 150 –20 –17 175 –16 –13 200 –12 –10 225 –9 –7 250 –6 –4 275 –4 –2 300 –1 1 325 2 3 350 4 5 375 6 7 400 8 9 450 12 12 500 16 16 550 19 19 600 22 22 650 25 24 700 28 27 750 30 29 800 33 31 900 37 36

1000 42 39 1200 49 46 1400 56 52 1600 62 58 1800 68 63 2000 73 67 2200 78 72 2400 82 76 2600 86 79 2800 90 83 3000 94 86 3200 98 89 3400 101 93 3600 104 95

*inHg, vacuum

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,

psi °F °F psi °F °F

R-502 HP62 R-502 HP62

Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,

kPa °C °C kPa °C °C

25* –108 –107 58 24 22 20* –88 –87 60 26 23 15* –75 –75 62 27 25 10* –65 –65 64 29 26

5* –56 –57 66 30 28 4* –55 –56 68 32 29 3* –54 –54 70 33 30 2* –53 –53 72 34 32 1* –52 –52 74 36 33

0 –50 –50 76 37 34 2 –45 –45 78 38 35 4 –40 –41 80 40 36 6 –36 –37 82 41 37

8 –32 –33 84 42 38 10 –29 –30 86 43 40 12 –25 –26 88 45 41 14 –22 –23 90 46 43 16 –19 –20 92 47 44 18 –16 –18 94 48 45 20 –13 –15 96 49 46 22 –11 –12 98 50 47 24 –8 –10 100 51 48 26 –6 –7 105 54 51 28 –3 –5 110 57 53 30 –1 –3 115 60 56 32 1 –1 120 62 58 34 3 2 125 64 60 36 5 3 130 67 63 38 7 5 135 69 65 40 9 7 140 71 67 42 11 9 145 73 69 44 13 11 150 75 71 46 15 12 175 85 81 48 16 14 200 95 89 50 18 16 250 111 104 52 20 17 300 125 118 54 21 19 350 137 129 56 23 20 400 148 140

25 –72 –71 1450 34 31 50 –60 –59 1500 35 32

75 –52 –52 1550 37 34 100 –46 –46 1600 38 35 125 –41 –41 1650 39 36 150 –37 –37 1700 41 37 175 –33 –34 1750 42 38 200 –30 –30 1800 43 40 225 –27 –28 1900 46 42 250 –24 –25 2000 48 44 275 –22 –22 2100 50 46 300 –19 –20 2200 52 48 325 –17 –18 2300 54 50 350 –15 –16 2400 56 52 375 –13 –14 2500 58 54 400 –11 –12 2600 60 56 425 –9 –10 2700 62 57 450 –8 –9 2800 64 59 475 –6 –7 2900 65 61 500 –4 –6 550 –1 –3 600 2 0 650 4 2 700 7 5 750 9 7 800 11 9 850 13 11 900 15 13 950 17 15

1000 19 17 1050 21 19 1100 23 20 1150 25 22 1200 26 24 1250 28 25 1300 29 27 1350 31 28 1400 32 30

*inHg, vacuum

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,

psi °F °F psi °F °F

R-502 507 R-502 507

Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,

kPa °C °C kPa °C °C

25* –108 –110 58 24 19 20* –88 –90 60 26 21 15* –75 –77 62 27 22 10* –65 –67 64 29 24

5* –56 –61 66 30 25 4* –55 –59 68 32 26 3* –54 –58 70 33 28 2* –53 –57 72 34 29 1* –52 –56 74 36 30

0 –50 –54 76 37 32 2 –45 –48 78 38 33 4 –40 –44 80 40 34 6 –36 –39 82 41 35

8 –32 –36 84 42 37 10 –29 –32 86 43 38 12 –25 –29 88 45 39 14 –22 –26 90 46 40 16 –19 –23 92 47 41 18 –16 –20 94 48 42 20 –13 –17 96 49 43 22 –11 –15 98 50 44 24 –8 –12 100 51 46 26 –6 –10 105 54 48 28 –3 –8 110 57 51 30 –1 –6 115 60 53 32 1 –3 120 62 55 34 3 –1 125 64 58 36 5 1 130 67 60 38 7 3 135 69 62 40 9 4 140 71 64 42 11 6 145 73 66 44 13 8 150 75 69 46 15 10 175 85 78 48 16 11 200 95 87 50 18 13 250 111 102 52 20 15 300 125 115 54 21 16 350 137 127 56 23 18 400 148 137

25 –72 –72 1000 19 16 50 –60 –61 1050 21 17

75 –52 –53 1100 23 19 100 –46 –47 1150 25 21 125 –41 –43 1200 26 22 150 –37 –39 1250 28 24 175 –33 –35 1300 29 25 200 –30 –32 1350 31 27 225 –27 –29 1400 32 28 250 –24 –26 1450 34 30 275 –22 –24 1500 35 31 300 –19 –22 1550 37 32 325 –17 –19 1600 38 34 350 –15 –17 1650 39 35 375 –13 –15 1700 41 36 400 –11 –14 1750 42 37 425 –9 –12 1800 43 38 450 –8 –10 1900 46 41 475 –6 –9 2000 48 43 500 –4 –7 2100 50 45 550 –1 –4 2200 52 47 600 2 –2 2300 54 49 650 4 1 2400 56 51 700 7 4 2500 58 53 750 9 6 2600 60 54 800 11 8 2700 62 56 850 13 10 2800 64 58 900 15 12 2900 65 59 950 17 14

*inHg, vacuum

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,

psi °F °F psi °F °F

Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,

R-22 HP62 R-22 HP62

kPa °C °C kPa °C °C

25* –100 –107 58 32 22 20* –80 –87 60 34 23 15* –66 –75 62 35 25 10* –56 –65 64 37 26

5* –48 –57 66 38 28 4* –47 –56 68 40 29 3* –45 –54 70 41 30 2* –44 –53 72 42 32 1* –43 –52 74 44 33

0 –41 –50 76 45 34 2 –36 –45 78 46 35 4 –32 –41 80 48 36 6 –28 –37 82 49 37

8 –24 –33 84 50 38 10 –20 –30 86 51 40 12 –17 –26 88 52 41 14 –14 –23 90 54 43 16 –11 –20 92 55 44 18 –8 –18 94 56 45 20 –5 –15 96 57 46 22 –2 –12 98 58 47 24 0 –10 100 59 48 26 2 –7 105 62 51 28 5 –5 110 64 53 30 7 –3 120 69 58 32 9 –1 125 72 60 34 11 2 130 74 63 36 13 3 135 76 65 38 15 5 140 78 67 40 17 7 145 81 69 42 19 9 150 83 71 44 21 11 175 93 81 46 23 12 200 101 89 48 24 14 250 117 104 50 26 16 300 131 118 52 28 17 350 143 129 54 29 19 400 154 140 56 31 20

25 –67 –71 1450 38 31 50 –55 –59 1500 39 32

75 –47 –52 1550 40 34 100 –41 –46 1600 42 35 125 –36 –41 1650 43 36 150 –32 –37 1700 44 37 175 –28 –34 1750 46 38 200 –25 –30 1800 47 40 225 –22 –28 1900 49 42 250 –20 –25 2000 51 44 275 –17 –22 2100 53 46 300 –15 –20 2200 56 48 325 –12 –18 2300 58 50 350 –10 –16 2400 59 52 375 –8 –14 2500 61 54 400 –7 –12 2600 63 56 425 –5 –10 2700 65 57 450 –3 –9 2800 67 59 475 –1 –7 2900 68 61 500 0 –6 550 3 –3 600 6 0 650 8 2 700 11 5 750 13 7 800 15 9 850 18 11 900 20 13 950 22 15

1000 23 17 1050 25 19 1100 27 20 1150 29 22 1200 30 24 1250 32 25 1300 33 27 1350 35 28 1400 36 30

*inHg, vacuum

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,

psi °F °F psi °F °F

R-22 507 R-22 507

Pressure, Sat. Temp, Sat. Temp, Pressure Sat. Temp, Sat. Temp,

kPa °C °C kPa °C °C

25* –100 –110 58 32 19 20* –80 –90 60 34 21 15* –66 –77 62 35 22 10* –56 –67 64 37 24

5* –48 –61 66 38 25 4* –47 –59 68 40 26 3* –45 –58 70 41 28 2* –44 –57 72 42 29 1* –43 –56 74 44 30

0 –41 –54 76 45 32 2 –36 –48 78 46 33 4 –32 –44 80 48 34 6 –28 –39 82 49 35

8 –24 –36 84 50 37 10 –20 –32 86 51 38 12 –17 –29 88 52 39 14 –14 –26 90 54 40 16 –11 –23 92 55 41 18 –8 –20 94 56 42 20 –5 –17 96 57 43 22 –2 –15 98 58 44 24 0 –12 100 59 46 26 2 –10 105 62 48 28 5 –8 110 64 51 30 7 –6 120 69 55 32 9 –3 125 72 58 34 11 –1 130 74 60 36 13 1 135 76 62 38 15 3 140 78 64 40 17 4 145 81 66 42 19 6 150 83 69 44 21 8 175 93 78 46 23 10 200 101 87 48 24 11 250 117 102 50 26 13 300 131 115 52 28 15 350 143 127 54 29 16 400 154 137 56 31 18

25 –67 –72 1000 23 16 50 –55 –61 1050 25 17

75 –47 –53 1100 27 19 100 –41 –47 1150 29 21 125 –36 –43 1200 30 22 150 –32 –39 1250 32 24 175 –28 –35 1300 33 25 200 –25 –32 1350 35 27 225 –22 –29 1400 36 28 250 –20 –26 1450 38 30 275 –17 –24 1500 39 31 300 –15 –22 1550 40 32 325 –12 –19 1600 42 34 350 –10 –17 1650 43 35 375 –8 –15 1700 44 36 400 –7 –14 1750 46 37 425 –5 –12 1800 47 38 450 –3 –10 1900 49 41 475 –1 –9 2000 51 43 500 0 –7 2100 53 45 550 3 –4 2200 56 47 600 6 –2 2300 58 49 650 8 1 2400 59 51 700 11 4 2500 61 53 750 13 6 2600 63 54 800 15 8 2700 65 56 850 18 10 2800 67 58 900 20 12 2900 68 59 950 22 14

*inHg, vacuum

Table 6

Suva

134a (R-134a) Physical Properties

Physical Property Unit Suva® 134a (R-134a) R-12

Boiling Point at 1 atm °F –14.9 –21.6

°C –26.1 –29.8

Vapor Pressure psia 96.61 94.51

Sat’d Liquid at 77°F (25°C) kPa 666.1 651.6

Liquid Density lb/ft

at 77°F (25°C) kg/m

Density lb/ft

Sat’d Vapor at 77°F (25°C) kg/m

75.28 81.84 1,206 1,311

2.02 2.32

32.4 37.2

Ozone-Depletion Potential

Compared with CFC-12 CFC-12 = 1 0 1

Global Warming Potential

Compared with CO

CO2 = 1 1300 8500

Table 7

Suva

HP62 (R-404A) and Suva

Physical Property Unit (R-404A) (R-507) R-502 R-22

Boiling Point at 1 atm °F –51.6 –52.1 –49.8 –41.4

°C –46.5 –46.7 –45.4 –40.8

Vapor Pressure psia 182 187 168 151

Sat’d Liquid at 77°F (25°C) kPa 1,255 1,287 1,162 1,041

Liquid Density lb/ft

at 77°F (25°C) kg/m

Density lb/ft

Sat’d Vapor at 77°F (25°C) kg/m

Ozone-Depletion Potential

Compared with R-12 R-12 = 1 0 0 0.23 0.05

Global Warming Potential

Compared with CO

CO2 = 1 3260 3300 5494 1700

507 (R-507) 507 (R-507)

507 (R-507) Physical Properties

507 (R-507) 507 (R-507)

Suva® HP62 Suva® 507

65.45 65.5 75.9 74.5 1,048 1,049 1,217 1193

4.0 4.3 4.2 2.8

64.1 68.9 67.3 44.9

Table 8

Compositions of Suva

Refrigerants

Compositions, wt% HFC-125 HFC-143a HFC-134a

Suva® HP62 (R-404A) 44 52 4

Suva

507 (R-507) 50 50

Suva® 134a (R-134a) 100

For Further Information:

DuPont Fluorochemicals Wilmington, DE 19880-0711 (800) 235-SUVA

www.suva.dupont.com

Europe

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

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

Japan

Mitsui DuPont Fluorochemicals

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

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

DuPont HP62, 507, 134A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual