Contents hide
1 EMERSON A-Series Alco Controls
2 Product Information
3 Product Usage Instructions
4 General information
5 Safety instructions
6 Mounting location
7 Installation
8 Brazing (Fig.1 )
9 Pressure Test
10 Tightness Test
11 Operation
12 Service / Maintenance
13 Technical Data
14 Classificationac cording PED and Markings
15 DIMENSION
16 ABOUT COMPANY
17 Documents / Resources
17.1 References

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EMERSON A-Series Alco Controls

EMERSON-A-Series-Alco-Controls-fig-1

Product Information

The Suction Accumulators A-Series is a product designed to hold liquid refrigerant and protect the compressor against temporary entering liquid fluid from suction line during reversing flow in
heat pumps applications, after defrost termination in refrigeration applications or temporary flooding back from system. The product is compatible with Fluid Group II R134a, R404A, R407C, R410A, R448A, R449A, R450A, R452A, R507, R513A, R1234ze* and Fluid Group I R32, R444B, R447A, R452B, R454B, R454A, R454C, R455A, R1234yf. The product is manufactured in Mexico and comes with a date code on the label.

Product Usage Instructions

  • Mounting Location: Install the suction accumulator in such a way that it is protected against vibration generated by the compressor. Use a vibration adsorber between suction accumulator and compressor to prevent vibration.
  • Brazing: Follow Fig.1 for brazing instructions.
  • Pressure Test: After installation, conduct a pressure test according to EN 378 for systems which must comply with European pressure equipment directive 2014/68/EU or to maximum working pressure of the system for other applications.
  • Tightness Test: Conduct a tightness test according to EN 378-2 with appropriate equipment and method to identify leakages from joints and products. The allowable leakage rate must be according to the system manufacturer’s specification.
  • Operation: Refer to the product manual for operating instructions.
  • Service / Maintenance: Refer to the product manual for service and maintenance instructions.

General information

The function of suction accumulator is holding liquid refrigerant and the protection of compressor against temporary entering liquid fluid from suction line during reversing flow in heat pumps applications, after defrost termination in refrigeration applications or temporary flooding back from system.

Safety instructions

  • Read operating instructions thoroughly. Failure to comply can result in device failure, system damage or personal injury.
  • This product is intended for use by qualified personnel having the appropriate knowledge and skills like trained according to EN 13313 or a specific training for flammable refrigerants.
  • Flammable refrigerants require special handling and care due to its flammability. Sufficient ventilation is required during service of the system. Contact with rapidly expanding gases can cause frostbite and eye damage. Proper protective equipment (gloves, eye protection, etc.) has to be used.
  • Ensure that the system is correctly labeled with applied refrigerant type and a warning for explosion risk.
  • In a severely contaminated system, avoid breathing acid vapors and avoid contact with skin from contaminated refrigerant / lubricants. Failure to do so could result in injury.
  • Before opening any system make sure pressure in system is brought to and remains at atmospheric pressure.
  • Do not release any refrigerant into the atmosphere!
  • Do not exceed the specified maximum ratings for pressure and temperature.
  • Observe and avoid mechanical damage of component housing.
  • Do not use any other fluid media without prior approval of EMERSON. Use of fluids not listed could result in:
    • Change of hazard category of product and consequently change of conformity assessment requirement for product in accordance with European Pressure Equipment Directive 2014/68/EU.
  • Ensure that design, installation and operation comply with European and national standards/regulations.
  • The suction accumulator must be used only for the purpose it is designed for.
  • For flammable refrigerants only use accessories approved for it!

Mounting location

  • The suction accumulator should be installed as close as possible to the compressor(s) in the main suction line but before any installed vibration adsorber.
  • On heat pumps systems with reversing valve, suction accumulator should be installed between main suction line of reversing valve and compressor.

Installation

  • Be sure that the inlet connection is connected to the main suction line.
  • The suction accumulator shell must be mounted securely in a vertical position.
  • WARNING: Protect the suction accumulator against vibration generated by compressor. Install the vibration adsorber between suction accumulator and compressor.

Brazing  (Fig.1 )

  • Perform the brazing joint as per EN 14324.
  • Before and after brazing clean tubing and brazing joints.
  • Minimize vibrations in the piping lines by appropriate solutions.
  • To avoid oxidization, it is advised to purge the system with an inert gas such as nitrogen while brazing.
  • Do not exceed the max. surface temperature of 120 °C!

    EMERSON-A-Series-Alco-Controls-fig-5

Pressure Test

After completion of installation, a pressure test must be carried out as follows:

  •  according to EN 378 for systems which must comply with European pressure equipment directive 2014/68/EU.
  • to maximum working pressure of system for other applications.

Tightness Test

Conduct a tightness test according to EN 378-2 with appropriate equipment and method to identify leakages from joints and products. The allowable leakage rate must be according system manufacturer’s specification.
WARNING:

  • Failure to pressure test or tightness test as described could result in loss of refrigerant, damage to property and/or personal injury.
  • The tests must be conducted by skilled personnel with due respect regarding the danger related to pressure.

Operation

  • After tightness test, start system. In general, the liquid level in the suction accumulator can be observed by removing external insulation and watching the condensation or frost level on external surface of suction accumulator.
  • During operation the external surface of the suction accumulator will sweat. Insulate the suction accumulator.

Service / Maintenance

When disposing or removing the component or part from refrigeration system, ensure that no refrigerant remains ed trapped inside of the part.

  • According to EN 378-4 during each periodic maintenance, tightness tests shall be carried out at the relevant part of the refrigerating system. This shall apply where appropriate following any repair.
  • A fused plug has been incorporated in suction accumulators range A..-4.. and A..-5.. and they will open if temperature of fluid exceeds 221 °C in case of external fire.
  • Do not attempt to repair the fused plug in case of detection of leakage. The suction accumulator must be replaced.
  • The external surface of shells is coated by epoxy powder painting for optimum protection against corrosion. The external surface of shell shall be checked as per EN 378 during routine/periodic inspection/service.

Technical Data

EMERSON-A-Series-Alco-Controls-fig-2

Classificationac cording PED and Markings

EMERSON-A-Series-Alco-Controls-fig-3 EMERSON-A-Series-Alco-Controls-fig-4

DIMENSION

EMERSON-A-Series-Alco-Controls-fig-6

Type Part No. Type Part No Connections Dimensions (mm)
(Inch) (mm) A B C D
A08-304 001973 A08-304-L 882453 1/2“   210 191 79 41
A10-305 001977 A10-305-L 882457 5/8“ 16 266 238 79 41
A06-405 001989 A06-405-L 882462 5/8“ 16 320 292 79 41
A12-305 001978 A12-305-L 882458 5/8“ 16 325 292 79 41
A12-306 001979 A12-306-L 882459 3/4“   378 350 79 41
A14-305 001980 A14-305-L 882460 5/8“ 16 383 350 79 41
A14-306 001987 A14-306-L 882461 3/4“   161 143 105 64
A10-405 001990 A10-405-L 882463 5/8“ 16 168 143 105 64
A10-406 001994 A10-406-L 882464 3/4“   279 254 105 64
A09-506 881995 A09-506-L 881994 3/4“   285 254 105 64
A09-507 882455 A09-507-L 882456 7/8“ 22 246 216 132 70
A12-506 881996 A12-506-L 881997 3/4“   252 216 132 70
A12-507 881998 A12-507-L 881999 7/8“ 22 327 297 132 70
A13-507 882007 A13-507-L 882000 7/8“ 22 334 297 132 70
A13-509 882011 A13-509-L 882001 1-1/8“   377 340 132 70
A17-509 882012 A17-509-L 882002 1-1/8“   380 340 132 70
A17-511 882013 A17-511-L 882003 1-3/8“ 35 470 430 132 70
A11-607 882014 A11-607-L 882004 7/8“ 22 471 430 132 70
A13-607 882015 A13-607-L 882005 7/8“ 22 317 279 160 75
A13-609 882019 A13-609-L 882006 1-1/8“   358 320 160 75
A14-611 882020 A14-611-L 882008 1-3/8“ 35 363 320 160 75
A17-613 882022 A17-613-L 882009 1-5/8“   396 350 160 75
A17-642 889023 A17-642-L 882010   42 480 432 160 75
A20-613 882021 A20-613-L 882016 1-5/8“   563 514 160 75
A25-613 882023 A25-613-L 882017 1-5/8“   683 635 160 75

ABOUT COMPANY

Documents / Resources

EMERSON A-Series Alco Controls [pdf] Instruction Manual
A08-304, A10-305, A06-405, A12-305, A12-306, A14-305, A14-306, A10-405, A10-406, A09-506, A09-507, A12-506, A12-507, A13-507, A13-509, A17-509, A17-511, A11-607, A13-607, A13-609, A14-611, A17-613, A17-642, A20-613, A-Series Alco Controls, A-Series Controls, Alco Controls, Controls

References