Vertrel™ SDG and SFR
Specialty Fluids

Retrofit Guidelines: Replacement of HCFC-225in Vapor Degreasers

Technical Information
Introduction

1. Drain HCFC-225 from the vapor degreaser system.

HCFC-225 is classified as an ozone depleting substance

2. Replace filters.

(ODS). As a result of its non-zero ozone depletion potential(ODP), the production and importation of HCFC-225 for use insolvent applications has been banned since January 1, 2015.
Vertrel™ SDG and SFR are zero ODP engineered mixturesdesigned to replace HCFC-225 in applications demanding
maximum cleaning power, including defluxing; oil, grease,and wax removal, and precision cleaning applications.
Vertrel™ SDG and SFR offer an excellent balance between
cleaning performance, environmental impact and safety in use:
• Excellent solvency power (Kb values >95)
• Superior cleaning performance

3. Replace desiccant bags.
4. Wipe down tank and ensure removal of any residues.
5. Flush the liquid lines with a small amount of Vertrel™ SDG
or SFR.
6. Charge tank with recommended quantity of Vertrel™ SDG
or SFR.
7. Turn on heaters and pump, and adjust heater, condensing
coils, and alarm set points to the recommended
temperatures.
RETROFIT IS COMPLETE!

• Fast drying—increasing productivity

General Retrofit Information• Compatible with most metals, plastics, and elastomers

System Modifications• Nonflammable• Low toxicity• Zero ozone depletion potential• Low global warming potential• Suitable for use with ultrasonics• Existing equipment can be used with no or minor
modification

Seven Easy Steps to Retrofit

In the vast majority of cases, Vertrel™ SDG and SFR willfunction as drop-ins for HCFC-225, and no modifications
to existing equipment are required. Special cases whereminor equipment modifications may be required arediscussed below.
Material CompatibilityVertrel™ SDG and SFR are characterized by high compatibility
with a wide selection of metals, plastics, and elastomers.
Compatible plastics include Teflon™ TFE, FEP, PFA, andpolyethylene; acrylics, ABS, and polycarbonates areincompatible with Vertrel™ SDG or SFR. Suitable elastomers

The following provides a summary of the basic retrofit

include Viton™ A, Viton™ B, and EPDM; natural rubber andsteps for Vertrel™ SDG and SFR; detailed discussion ofsilicone elastomers are not recommended. Individual plastic

each step is provided in this bulletin.

and elastomeric formulations can vary with the manufacturer;
therefore, the best assurance of material compatibility can beattained via the testing of plastic and elastomeric materials
under conditions expected during normal operation.

Vertrel™ SDG and SFR

Specialty Fluids

Contact of Vertrel™ SDG and SFR with highly basic

found in the technical bulletin “Safe Handling of Vertrel™

materials (pH >10) is not recommended.

Specialty Fluids”. Whenever possible, a drum pump or aFlammability
Vertrel™ SDG and SFR exhibit no closed cup or open cup
flash point and are classified as nonflammable liquids. Theproducts are volatile; and, if allowed to evaporate and mix
with air, flammable mixtures can be produced.

Detailed Retrofit Procedure

gravity stand should be used to transfer Vertrel™ SDG orSFR solvent from the container to the point of use.
6. Charge tank with recommended quantity of Vertrel™
SDG or SFR. Charge the vapor degreaser tank to theliquid level recommended by the manufacturer.
7. Turn on heaters and pumps, and adjust heater,condensing coils, and alarm set points to the

1. Drain HCFC-225 from the vapor degreaser tank. The

recommended temperatures. Turn on the heaters andexisting charge of HCFC-225 should be completely

pumps in accordance with the equipment manufacturer’s

removed from the system and collected in a suitable

recommended procedure. Set the condensing coilvessel for recycle or disposal in accordance with local

temperatures in accordance with the equipment

requirements. Ensure that HCFC-225 has been drained

manufacturer’s recommendations. Adjust the boil sumpfrom all tanks, liquid lines, water separators, filter

and alarm temperatures in accordance with theholders, and any other system components that are inequipment manufacturer’s recommendations; Chemours

contact with HCFC-225.

recommended settings are summarized below and in

2. Replace filters. Change the filter during the retrofit.
Standard filters employing cotton, polypropylene, orPTFE media are acceptable.
3. Replace desiccant bags. Desiccant drying is not as
crucial with modern cleaning solvents. When you
upgrade to Vertrel™ SDF or SFR, consult with yourChemours representative as to the necessity of its use
for your application. Type 3A molecular sieves arerecommended for use in the desiccant bags; suitable
desiccant bag materials include cotton. Tyvek® bags are
not recommended.
4. Wipe down tank and ensure removal of any residues.
The vapor degreaser tank should be thoroughly cleaned
to ensure the removal of any residual HCFC-225 andany residues present in the tank.

Table 1. Cleaning optimization may require slightadjustments to the recommended initial settings,
depending upon the model of vapor degreaser employed.
• Boil Sump T. Set to 5 °C (9 °F) above the boiling pointof the solvent chosen.
• High Solvent T Alarm. Set to 10 °C (18 °C) above theboiling point of the solvent chosen.
• High Vapor T/Coolant Failure Alarm. Set to 5 °C (9 °F)
below the boiling point of the solvent chosen.
• Ultrasonic Tank High T Alarm. Set to no more than
90% of boiling point of the solvent chosen.
Table 1. Recommended Vapor Degreaser Settings for
Vertrel™ SDG and SFR
Property

Vertrel™ SDG

Vertrel™ SFR

Solvent Boiling Point, °C (°F)

43 (109.4)

41 (105.8)

SDG or SFR. Charge the vapor degreaser tank with a

Boil Sump T, °C (°F)

48 (118.4)

46 (114.8)

small amount of Vertrel™ SDG or SFR and flush the liquid

High Solvent T Alarm, °C (°F)

53 (127.4)

51 (123.8)

lines; do not allow the pump to run dry during the line

Coolant Failure Alarm, °C (°F)

38 (100.4)

36 (96.8)

flushing procedure. Detailed information related to theU.S. Tank High T Alarm, °C (°F)

39 (102.2)

37 (98.6)

5. Flush the liquid lines with a small amount of Vertrel™

safety and handling of Vertrel™ SDG and SFR can be

For more information on Vertrel™, please visit vertrel.com or call (800) 235-7882.
The information set forth herein is furnished free of charge and based on technical data that Chemours believes to be reliable. It is intended for use by persons having technical skill, attheir own risk. Because conditions of use are outside our control, Chemours makes no warranties, expressed or implied, and assumes no liability in connection with any use of thisinformation. Nothing herein is to be taken as a license to operate under, or a recommendation to infringe, any patents or patent applications.
© 2017 The Chemours Company FC, LLC. Vertrel™ is a trademark of The Chemours Company FC, LLC. Chemours™ and the Chemours Logo are trademarks of The Chemours Company.
Replaces: K-26058
C-11028 (5/17)