Parker ADAPTOMODE A4AS Installation, Service And Parts Information Download Page 3 | Manualshive

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Refrigerating Specialties Division

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Fig 3 A4AS

Fig 4 A4AB

Fig 5 A4AD

Fig 2 A4AZ

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Summary of Contents for ADAPTOMODE A4AS

Page 1: ...e A4 Series of Regulators is 45 C to 105 C 50 F to 220 F Principles of Operation See Fig 1 The inlet pressure enters the space under the diaphragm through passage N When the force created by the pressure exceeds the force of the range spring the diaphragm is lifted off the pilot seat allowing pressure to enter on top of the power piston This causes the power piston to move downward forcing the mod...

Page 2: ... open thereby bypassing the regulator function i e not regulating However in the wide open mode the regulator will still require the 0 14 bar 2 psi minimum pressure drop When the solenoid is de energized the valve functions as an Inlet Pressure Regulator Purpose The Type A4AB frequently is used with the wide open function where maximum refrigeration capacity from an evaporator is required During t...

Page 3: ...Refrigerating Specialties Division 3 Fig 3 A4AS Fig 4 A4AB Fig 5 A4AD Fig 2 A4AZ ...

Page 4: ...lts to stretch or align pipe Even the heavy duty semisteel body of an A4A can be distorted causing the precision parts to bind The regulator should be installed in a location where it is easily accessible for adjustment and maintenance The location should be such that the regulator can not be easily damaged by material handling equipment When it is necessary to insulate the regulator and companion...

Page 5: ...the seating area of the Throttling Plug 33 for damage or erosion If damaged it should be replaced It would be advisable to replace the entire bottom cap assembly Inspect all gaskets and O rings for damage and replace where necessary Assembly When reassembling the valve all internal parts should be clean dry and lightly oiled with refrigerant oil except O rings Apply silicone grease to the O rings ...

Page 6: ...sembly procedure for the A4A pilot pages 4 and 5 When mounting the pilot place the O Rings 50 into the proper grooves and tighten the Cap Screws 49 evenly The ideal tightening torque is 1 1 Kg m 8 ft lbs S6A Modular Solenoid Pilot Figs 10 and 12 This solenoid pilot may be mounted on either Pad 1 or 2 depending on the function desired see pages 2 and 3 Before working on any solenoid pilot make sure...

Page 7: ... operation Make sure that the regulator receives the proper electrical signal where modular pilot solenoids are used Make sure they are same as the power supply Check hand valves in the system to make sure they are open or closed as required and the system is receiving liquid or gas as the case may be Solenoid Coils and Coil Housing The solenoid coils and coil housing identified and described on p...

Page 8: ...rty damaged or frozen Clean or replace Clean strainer shut off flow Diaphragm follower stuck or damged Clean or replace Install follower carefully Piston jammed with excess dirt Remove and polish piston and bore with crocus cloth Clean valve and strainer Throttling plug leaking due to excess Clean or replace If used on liquid check for dirt or damage erosion due to excessive flash gas Reduce flash...

Page 9: ... 5 1 1 4 256 10 1 1 1 2 307 12 1 SW FOR 3 4 216 8 5 2 1 2 331 13 0 3 389 15 3 4 450 17 7 4 450 17 7 PIPE SIZES 1 216 8 5 1 1 2 256 10 1 2 307 12 1 SHOWN 1 1 4 216 8 5 F 1 1 4 300 11 8 1 1 2 364 14 3 WN FOR 3 4 254 10 0 2 1 2 401 15 6 3 478 18 8 4 571 22 5 4 571 22 5 PIPE SIZES 1 261 10 3 1 1 2 304 12 0 2 371 14 6 SHOWN 1 1 4 261 10 3 G 7 8 239 9 4 1 3 8 269 10 6 1 5 8 358 14 1 2 5 8 348 13 7 3 1 8...

Page 10: ...Avail with Kit 2 16 17 19 DiaphragmKit Rge D 200771 1 200771 1 16 19 VCVacuumCartridge Only Avail with Kit 1 Only Avail with Kit 1 Pilot Seat Rge A 202000 1 202000 1 16 19 DiaphragmKit Rge V 202004 1 202004 1 Not A4AO Rge D 202002 1 202002 1 27 Plug Pkg 1 4 NPT 202552 5 202552 5 28 Adapter Only Avail with Kit 1 Only Avail with Kit 1 29 Gasket Only Avail with Kit 1 Only Avail with Kit 1 19 27 28 Ad...

Page 11: ...Avail with Kit 1 16 17 19 200770 1 200770 1 200770 1 200770 1 200770 1 200770 1 17 Only Avail with Kit 2 Only Avail with Kit 2 Only Avail with Kit 2 Only Avail with Kit 2 Only Avail with Kit 2 Only Avail with Kit 2 16 17 19 200771 1 200771 1 200771 1 200771 1 200771 1 200771 1 16 19 Only Avail with Kit 1 Only Avail with Kit 1 202004 1 202004 1 202004 1 202004 1 202000 1 202000 1 202000 1 202001 1 ...

Page 12: ... gaskets plus O Rings If applicable 25 26 29 37 Gasket Kit A4 S4 202112 202112 43 45 3 Indv I Gaskets O Rings Valve Pk g sold pkgd in qtys only as Indicated 29 Gasket Pkg Adapter 202406 5 202406 5 37 O Ring Gasket Pkg Bottom Cap 202384 3 202384 3 43 Gasket Pkg Seal Cap Bottom 202408 12 202408 12 2 Gasket Pkg Seal Cap Top 202408 12 202408 12 45 Gasket Pkg Flange 202079 12 202079 12 4 Packing Pkg St...

Page 13: ...lyAvail with Kit 1 OnlyAvail with Kit 1 OnlyAvail with Kit 1 29 112 200669 1 200673 1 200673 1 200690 1 200676 1 200677 1 7 16 2 19 2 Gasket Kits includes complete set of gaskets plus O Rings if applicable 25 26 29 37 202113 202114 202114 202115 202116 202117 43 45 3 Individual Gaskets 10 Rings and Valve Packing sold and packaged In quantities only as Indicated 29 202407 5 202397 3 202397 3 202396...

Page 14: ... 4 to 2 port Pressure Pilot A2D used on main valve sizes 2 1 2 to 4 port Repair Kits indicated for the A2D2 and A2D are common parts used on the integral pressure pilot mounted on the A4A Series Regulator Repair Parts Kits for A2D2 and A2D Modular Pressure Pilots Spare or Additional A2D2 and A2D Repair Kit Packages Note The following items are included in the above Kits in the exact numbers as req...

Page 15: ... Kit 50 O Ring 2 Also available in package See below 66 Bolts 4 Only Available with Kit 50 66 Bolt O Ring Kit 1 201574 62 Gasket 1 Only Available with Kit 63 Plunger Needle Assembly 1 Only Available with Kit 62 63 Plunger Kit Needle 1 201019 62 Gasket 1 Only Available with Kit 63 Plunger Needle Assembly 1 Only Available with Kit 62 63 Plunger Kit Needle 1 201021 D C only 62 Gasket 1 Only Available...

Page 16: ... Bulletins and Safety Bulletin RSB prior to installation or servicing work Where cold refrigerant liquid lines are used it is necessary that certain precautions be taken to avoid damage which could result from liquid expansion Temperature increase in a piping section full of solid liquid will cause high pressure due to the expanding liquid which can possibly rupture a gasket pipe or valve All hand...

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