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Table 16 — Sensor Temperature (°C) vs Resistance/Voltage Drop; Flotronic™ Chiller

TEMPERATURE

VOLTAGE

RESISTANCE

(C)

DROP (V)

(OHMS)

-32.0

4.690

100 049

-31.5

4.680

97 006

-31.0

4.671

94 061

-30.5

4.661

91 209

-30.0

4.651

88 449

-29.5

4.641

85 777

-29.0

4.630

83 191

-28.5

4.620

80 687

-28.0

4.609

78 264

-27.5

4.597

75 918

-27.0

4.586

73 648

-26.5

4.574

71 451

-26.0

4.562

69 324

-25.5

4.550

67 265

-25.0

4.537

65 272

-24.5

4.525

63 344

-24.0

4.512

61 477

-23.5

4.499

59 670

-23.0

4.485

57 921

-22.5

4.471

56 228

-22.0

4.457

54 589

-21.5

4.443

53 003

-21.0

4.428

51 467

-20.5

4.413

49 980

-20.0

4.398

48 541

-19.5

4.383

47 148

-19.0

4.367

45 799

-18.5

4.351

44 492

-18.0

4.334

43 228

-17.5

4.318

42 003

-17.0

4.301

40 817

-16.5

4.283

39 668

-16.0

4.266

38 556

-15.5

4.248

37 478

-15.0

4.230

36 435

-14.5

4.211

35 424

-14.0

4.193

34 444

-13.5

4.174

33 495

-13.0

4.154

32 576

-12.5

4.135

31 685

-12.0

4.115

30 821

-11.5

4.094

29 984

-11.0

4.074

29 173

-10.5

4.053

28 386

-10.0

4.032

27 624

- 9.5

4.010

26 884

- 9.0

3.989

26 168

- 8.5

3.967

25 472

- 8.0

3.944

24 798

- 7.5

3.922

24 144

- 7.0

3.899

23 509

- 6.5

3.876

22 893

- 6.0

3.852

22 296

- 5.5

3.829

21 716

- 5.0

3.805

21 153

- 4.5

3.781

20 606

- 4.0

3.756

20 076

- 3.5

3.732

19 561

- 3.0

3.707

19 061

- 2.5

3.682

18 575

- 2.0

3.656

18 103

- 1.5

3.631

17 645

- 1.0

3.605

17 199

- 0.5

3.579

16 766

0.0

3.553

16 346

0.5

3.526

15 937

1.0

3.500

15 539

1.5

3.473

15 153

2.0

3.446

14 777

2.5

3.419

14 412

3.0

3.392

14 057

3.5

3.364

13 711

4.0

3.337

13 375

4.5

3.309

13 048

5.0

3.281

12 730

5.5

3.253

12 420

6.0

3.225

12 119

6.5

3.197

11 826

7.0

3.169

11 541

7.5

3.140

11 263

8.0

3.112

10 992

8.5

3.083

10 729

9.0

3.054

10 472

9.5

3.026

10 223

10.0

2.997

9 979

10.5

2.968

9 742

11.0

2.939

9 512

11.5

2.911

9 287

12.0

2.882

9 068

12.5

2.853

8 855

13.0

2.824

8 647

13.5

2.795

8 444

14.0

2.766

8 247

14.5

2.737

8 055

15.0

2.708

7 868

15.5

2.680

7 685

TEMPERATURE

VOLTAGE

RESISTANCE

(C)

DROP (V)

(OHMS)

16.0

2.651

7507

16.5

2.622

7334

17.0

2.593

7165

17.5

2.565

7000

18.0

2.536

6840

18.5

2.508

6683

19.0

2.479

6531

19.5

2.451

6382

20.0

2.423

6237

20.5

2.395

6096

21.0

2.367

5959

21.5

2.339

5825

22.0

2.311

5694

22.5

2.283

5566

23.0

2.256

5442

23.5

2.228

5321

24.0

2.201

5203

24.5

2.174

5088

25.0

2.147

4976

25.5

2.120

4867

26.0

2.094

4760

26.5

2.067

4656

27.0

2.041

4555

27.5

2.015

4457

28.0

1.989

4360

28.5

1.963

4267

29.0

1.938

4175

29.5

1.912

4086

30.0

1.887

4000

30.5

1.862

3915

31.0

1.837

3832

31.5

1.813

3752

32.0

1.789

3674

32.5

1.764

3597

33.0

1.741

3523

33.5

1.717

3450

34.0

1.693

3379

34.5

1.670

3310

35.0

1.647

3243

35.5

1.624

3177

36.0

1.602

3113

36.5

1.579

3051

37.0

1.557

2990

37.5

1.536

2931

38.0

1.514

2873

38.5

1.492

2816

39.0

1.471

2761

39.5

1.450

2707

40.0

1.430

2655

40.5

1.409

2603

41.0

1.389

2553

41.5

1.369

2504

42.0

1.349

2457

42.5

1.330

2410

43.0

1.311

2364

43.5

1.292

2320

44.0

1.273

2276

44.5

1.254

2234

45.0

1.236

2192

45.5

1.218

2152

46.0

1.200

2112

46.5

1.182

2073

47.0

1.165

2035

47.5

1.148

1997

48.0

1.131

1961

48.5

1.114

1925

49.0

1.098

1890

49.5

1.081

1856

50.0

1.065

1822

50.5

1.049

1789

51.0

1.034

1757

51.5

1.019

1725

52.0

1.003

1694

52.5

0.988

1663

53.0

0.974

1634

53.5

0.959

1604

54.0

0.945

1575

54.5

0.931

1547

55.0

0.917

1519

55.5

0.903

1492

56.0

0.890

1465

56.5

0.876

1438

57.0

0.863

1412

57.5

0.850

1387

58.0

0.837

1362

58.5

0.825

1337

59.0

0.812

1313

59.5

0.800

1289

60.0

0.788

1265

60.5

0.776

1242

61.0

0.765

1219

61.5

0.753

1197

62.0

0.742

1175

62.5

0.731

1153

63.0

0.720

1132

63.5

0.709

1111

TEMPERATURE

VOLTAGE

RESISTANCE

(C)

DROP (V)

(OHMS)

64.0

0.698

1090

64.5

0.688

1070

65.0

0.678

1050

65.5

0.667

1030

66.0

0.657

1011

66.5

0.648

992

67.0

0.638

973

67.5

0.628

955

68.0

0.619

937

68.5

0.609

919

69.0

0.600

902

69.5

0.591

885

70.0

0.582

868

70.5

0.574

852

71.0

0.565

836

71.5

0.557

820

72.0

0.548

805

72.5

0.540

790

73.0

0.532

775

73.5

0.524

761

74.0

0.516

746

74.5

0.508

733

75.0

0.501

719

75.5

0.493

706

76.0

0.486

693

76.5

0.479

681

77.0

0.472

669

77.5

0.465

657

78.0

0.458

645

78.5

0.451

634

79.0

0.444

623

79.5

0.437

613

80.0

0.431

602

80.5

0.425

592

81.0

0.418

583

81.5

0.412

573

82.0

0.406

564

82.5

0.400

556

83.0

0.394

547

83.5

0.388

539

84.0

0.383

531

84.5

0.377

524

85.0

0.371

516

85.5

0.366

509

86.0

0.361

502

86.5

0.355

496

87.0

0.350

489

87.5

0.345

483

88.0

0.340

477

88.5

0.335

472

89.0

0.331

466

89.5

0.326

461

90.0

0.321

456

90.5

0.317

451

91.0

0.312

446

91.5

0.308

441

92.0

0.303

436

92.5

0.299

432

93.0

0.295

427

93.5

0.291

423

94.0

0.287

419

94.5

0.283

415

95.0

0.279

410

95.5

0.275

406

96.0

0.271

402

96.5

0.267

398

97.0

0.264

393

97.5

0.260

389

98.0

0.257

385

98.5

0.253

380

99.0

0.250

376

99.5

0.246

371

100.0

0.243

367

100.5

0.240

362

101.0

0.236

357

101.5

0.233

352

102.0

0.230

346

102.5

0.227

341

103.0

0.224

335

103.5

0.221

330

104.0

0.218

324

104.5

0.215

318

105.0

0.212

312

105.5

0.209

305

106.0

0.206

299

106.5

0.204

292

107.0

0.201

285

64

Summary of Contents for 30GT080-420

Page 1: ...Step 3 Check Compressor Mounting 27 Step 4 Cooler Fluid and Drain Piping Connections 27 PREPARATION FOR YEAR ROUND OPERATION PREPARATION FOR WINTER SHUTDOWN Step 5 Make Electrical Connections 28 FIEL...

Page 2: ...30A 315A and 330A B 420A B will have fus ible plugs with 3 8 in SAE Society of Automotive Engi neers U S A flares if required by local codes Table 1 Unit Sizes and Modular Combinations UNIT MODEL 30GT...

Page 3: ...rs are used a perimeter support channel between the unit and the isolators is recommended 4 Dimensions in are in millimeters 5 Thru the door handles for non fused disconnect op tion on 380 415 v and 4...

Page 4: ...d for spring iso lator location 3 If spring isolators are used a perimeter support channel between the unit and the isolators is recommended 4 Dimensions in are in millimeters 5 Thru the door handles...

Page 5: ...ator location 3 If spring isolators are used a perimeter support channel between the unit and the isolators is recommended 4 Dimensions in are in millimeters Fig 3 Dimensions 30GT130 170 230A 270A 330...

Page 6: ...816 2 Fig 4 Dimensions 30GT190 210 290A 315A 360A 50 Hz 360A B 60 Hz 390A B 420A B NOTES 1 Unit must have clearances for airflow from solid sur faces as follows Top Do not restrict in any way Ends 5 f...

Page 7: ...NON FUSED DISCONNECT OPTION Fig 5 Location of Optional Non Fused Disconnect 130 210 and 230A 315A 330A B 420A B Units 130 170 230A 270A 330A B 360B 50 Hz Shown 7...

Page 8: ...50 1730 1680 1660 750 786 764 755 C C 1830 1910 1863 1842 832 868 847 837 090 245B C AL 1833 1864 1724 1714 833 847 784 779 C C 2014 2040 1907 1899 915 927 867 863 100 255B 270B C AL 2222 2222 2133 21...

Page 9: ...83 433 728 707 754 737 150 230A 255A C AL 420 710 527 379 653 625 794 653 C C 478 768 585 436 285 711 880 740 170 270A 330A B C AL 437 787 605 392 680 740 825 664 C C 495 845 663 450 767 826 912 751 1...

Page 10: ...436 740 711 888 743 150 230A 255A C AL 430 723 527 379 653 625 831 682 C C 486 781 585 437 740 711 918 769 170 270A 330A B 360B C AL 437 792 612 397 694 760 840 666 C C 495 850 670 454 780 847 927 75...

Page 11: ...20 000 High Static Fan Speed rpm 1750 1750 1750 1750 1740 1740 1740 1740 1740 No Blades Diameter in 12 30 12 30 12 30 12 30 12 30 12 30 12 30 12 30 12 30 No Fans Total kW 6 22 2 6 22 2 8 29 6 8 29 6 1...

Page 12: ...76 000 100 000 76 000 176 000 High Static Fan Speed rpm 1740 1750 1740 1750 1740 1750 1740 1750 No Blades Diameter in 12 30 12 30 12 30 12 30 12 30 12 30 12 30 12 30 No Fans Total kW 10 37 0 6 22 2 16...

Page 13: ...000 76 000 196 000 120 000 76 000 196 000 100 000 100 000 200 000 120 000 120 000 240 000 High Static Fan Speed rpm 1740 1750 1740 1750 1740 1740 1740 1740 No Blades Diameter in 12 30 12 30 12 30 12 3...

Page 14: ...igh Static Fan Speed rpm 1740 1740 1740 1740 No Blades Diameter in 12 30 12 30 12 30 12 30 No Fans Total kW 12 44 4 12 44 4 24 88 8 12 44 4 12 44 4 24 88 8 Total Airflow cfm 120 000 120 000 240 000 12...

Page 15: ...0 56 630 56 630 High Static Fan Speed r s 29 29 29 29 29 29 29 29 29 No Blades Diameter mm 12 762 12 762 12 762 12 762 12 762 12 762 12 762 12 762 12 762 No Fans Total kW 6 22 2 6 22 2 8 29 6 8 29 6 1...

Page 16: ...4 47 190 35 864 83 054 High Static Fan Speed r s 29 29 29 29 29 29 29 29 No Blades Diameter mm 12 762 12 762 12 762 12 762 12 762 12 762 12 762 12 762 No Fans Total kW 10 37 0 6 22 2 16 59 2 10 37 0 6...

Page 17: ...56 630 35 864 92 494 56 630 35 864 92 494 47 190 47 190 94 380 56 630 56 630 113 260 High Static Fan Speed r s 29 29 29 29 29 29 29 29 No Blades Diameter mm 12 762 12 762 12 762 12 762 12 762 12 762 1...

Page 18: ...gh Static Fan Speed r s 29 29 29 29 No Blades Diameter mm 12 762 12 762 12 762 12 762 No Fans Total kW 12 44 4 12 44 4 24 88 8 12 44 4 12 44 4 24 88 8 Total Airflow L s 56 630 56 630 113 260 56 630 56...

Page 19: ...an Speed rpm 1445 1445 1445 1445 1445 1445 1445 1445 1445 No Blades Diameter in 12 30 12 30 12 30 12 30 12 30 12 30 12 30 12 30 12 30 No Fans Total kW 6 22 2 6 22 2 8 29 6 8 29 6 10 37 0 10 37 0 10 37...

Page 20: ...100 000 76 000 176 000 High Static Fan Speed rpm 1445 1445 1445 1445 1445 1445 1445 1750 No Blades Diameter in 12 30 12 30 12 30 12 30 12 30 12 30 12 30 12 30 No Fans Total kW 10 37 0 6 22 2 16 59 2...

Page 21: ...0 000 220 000 High Static Fan Speed rpm 1445 1445 1445 1445 1445 1445 1445 1445 No Blades Diameter in 12 30 12 30 12 30 12 30 12 30 12 30 12 30 12 30 No Fans Total kW 12 44 4 8 29 6 20 74 0 12 44 4 8...

Page 22: ...No Blades Diameter in 12 30 12 30 12 30 12 30 No Fans Total kW 12 44 4 12 44 4 24 88 8 12 44 4 12 44 4 24 88 8 Total Airflow cfm 120 000 120 000 240 000 120 000 120 000 240 000 CONDENSER COILS Type Ve...

Page 23: ...56 630 High Static Fan Speed r s 24 24 24 24 24 24 24 24 24 No Blades Diameter mm 12 762 12 762 12 762 12 762 12 762 12 762 12 762 12 762 12 762 No Fans Total kW 6 22 2 6 22 2 8 29 6 8 29 6 10 37 0 10...

Page 24: ...864 83 054 47 190 35 864 83 054 High Static Fan Speed r s 24 24 24 24 24 24 24 24 No Blades Diameter mm 12 762 12 762 12 762 12 762 12 762 12 762 12 762 12 762 No Fans Total kW 10 37 0 6 22 2 16 59 2...

Page 25: ...94 380 56 630 47 190 103 820 High Static Fan Speed r s 24 24 24 24 24 24 24 24 No Blades Diameter mm 12 762 12 762 12 762 12 762 12 762 12 762 12 762 12 762 No Fans Total kW 12 44 4 8 29 6 20 74 0 12...

Page 26: ...atic Fan Speed r s 24 24 24 24 No Blades Diameter mm 12 762 12 762 12 762 12 762 No Fans Total kW 12 44 4 12 44 4 24 88 8 12 44 4 12 44 4 24 88 8 Total Airflow L s 56 630 56 630 113 260 56 630 56 630...

Page 27: ...cing Field supplied shut off valves should also be in stalled to facilitate servicing and flow balancing Locate valves in return and supply cooler fluid lines as close to the chiller as possible Locat...

Page 28: ...ing should be to the non fused dis connect rather than the terminal blocks 30GT080 110 and 230B 315B Units All field power en ters the unit through the control box at the left end when facing the comp...

Page 29: ...ing area All units have a single location for power connection one per module on 230 420 units to simplify field power wiring The maximum acceptable wire size for the terminal block is 500 kcmil Copp...

Page 30: ...onal power supply is re quired If a separate power source is required follow these instructions and disconnect the wires between the control and power terminal blocks For 30GT080 110 and 230B 315B Uni...

Page 31: ...ided between terminals TB6 3 and TB6 4 for field use To use this circuit remove the fac tory jumper and install the switches LEGEND AND NOTES FOR WIRING DIAGRAMS Fig 16 and 17 LEGEND A Alarm CWFS Chil...

Page 32: ...350 300 300 577 8 424 8 380 415 50 342 440 244 1 300 250 250 497 0 363 5 267 2 300 300 300 522 8 389 3 100 208 230 60 187 253 470 1 500 500 500 835 2 633 2 535 6 600 600 600 908 6 706 6 460 60 414 50...

Page 33: ...8 633 362 5 400 400 400 531 1 435 1 384 1 400 400 400 552 7 456 7 380 60 342 418 479 3 500 500 500 761 0 609 0 521 3 600 600 600 803 0 651 0 230 50 207 253 796 2 800 800 800 1206 6 988 3 865 8 1000 80...

Page 34: ...497 0 500 600 600 760 1 622 1 315 208 230 60 187 253 890 4 1000 1000 1000 1391 3 1115 3 1000 0 1000 1200 1200 1501 3 1225 3 460 60 414 506 413 1 450 450 450 676 3 538 3 451 1 450 500 500 714 3 576 3 5...

Page 35: ...344 9 350 350 400 599 6 467 6 315 208 230 60 187 253 521 4 600 600 600 1019 2 743 2 587 2 600 600 700 1092 6 816 6 460 60 414 506 248 9 300 250 300 500 8 367 3 273 8 300 300 300 529 4 395 9 575 60 518...

Page 36: ...5 247 346 50 44 9 247 79 5 382 44 9 247 53 8 280 380 415 50 43 6 223 65 4 345 43 6 223 46 8 280 090 PW 208 230 60 89 7 268 67 9 207 89 7 268 89 7 268 460 60 44 9 134 33 3 104 44 9 134 44 9 134 575 60...

Page 37: ...07 7 304 107 7 304 460 60 46 8 152 46 8 152 46 8 152 46 8 152 46 8 152 46 8 152 575 60 41 7 106 41 7 106 41 7 106 41 7 106 41 7 106 41 7 106 380 60 55 8 168 55 8 168 55 8 168 55 8 168 55 8 168 55 8 16...

Page 38: ...400 380 415 50 65 5 345 65 5 345 65 5 345 65 5 345 65 5 345 255 PW 208 230 60 89 8 268 89 8 268 89 8 268 151 3 414 151 3 414 460 60 44 9 134 44 9 134 44 9 134 65 4 207 65 4 207 575 60 36 6 99 36 6 99...

Page 39: ...5 247 52 6 280 45 5 247 52 6 280 346 50 44 9 247 79 5 382 44 9 247 79 5 382 380 415 50 43 6 223 65 4 345 43 6 223 65 4 345 255 PW 208 230 60 89 7 268 106 4 304 89 7 268 106 4 304 460 60 44 9 134 48 7...

Page 40: ...80 2 400 55 8 294 80 2 400 80 2 400 230 50 87 9 366 87 9 366 107 7 545 87 9 366 107 7 545 107 7 545 380 415 50 46 8 253 46 8 253 65 5 345 46 8 253 65 5 345 65 5 345 330 PW 208 230 60 107 7 304 107 7 3...

Page 41: ...345 330 PW 208 230 60 107 7 304 107 7 304 107 7 304 107 7 304 107 7 304 107 7 304 460 60 46 8 152 46 8 152 46 8 152 46 8 152 46 8 152 46 8 152 575 60 41 7 106 41 7 106 41 7 106 41 7 106 41 7 106 41 7...

Page 42: ...80 2 240 80 2 240 230 50 77 0 206 77 0 206 107 7 327 107 7 327 107 7 327 107 7 327 107 7 327 380 415 50 44 9 134 44 9 134 65 5 207 65 5 207 65 5 207 65 5 207 65 5 207 30GT UNIT SIZE NAMEPLATE V Hz 3...

Page 43: ...ng types of temperature reset Return fluid temperature reset Space temperature reset requires accessory thermistor Outdoor air temperature reset requires accessory thermistor Chilled fluid flow switch...

Page 44: ...t and output signals of microprocessor control prior to unit start up This check ensures that all con trol options thermistors and status switches are in proper working order To initiate the quick tes...

Page 45: ...ter Fluid Temperature TP Test Pin Fig 19 Center of Flotronic Control System 080 110 and 230B 315B Shown NOTES 1 Refer to Controls and Troubleshooting literature for details 2 Processor board is rotate...

Page 46: ...and quick test display codes C QUICK TEST STEPS 31 42 OUTPUT RELAYS These quick test steps allow microprocessor to check output signals from relay boards in unit control system In addition operation...

Page 47: ...8 Brine EXV Configuration Header 6 TXV 50 Hz Configuration Header 7 60 Hz External Reset DIP Switch 1 Return Fluid Reset Reset Disabled DIP Switch 2 Reset Enabled Pulldown Disabled DIP Switch 3 Pulld...

Page 48: ...or Not Used Thermistor OK T7 Compressor Thermistor Circuit A EXV Units Thermistor Faulty or Not Used Thermistor OK T8 Compressor Thermistor Circuit B EXV Units Thermistor Faulty or Not Used Thermisto...

Page 49: ...rgize Compressor B1 OFM2 080 110 Energize Compressor B1 OFM6 and OFM8 all other unit sizes K5 No Action 080 Energize Compressor B2 all other unit sizes K6 No Action 080 150 K7 Energize Compressor B3 1...

Page 50: ...ls and Troubleshooting literature for details 4 Start chilled fluid pump 5 Turn ON OFF switch to ON position The display will read During this time the machine checks all po tentiometers and thermisto...

Page 51: ...low could subject tubes to frost pinching in tube sheet resulting in failure of cooler Consult application data and job design requirements to determine flow rate requirements for particular installat...

Page 52: ...fluid temperature is being reset display shows when the display button is pressed HEAD PRESSURE CONTROL Units with EXV Microprocessor controls EXV to maintain a superheat of 30 F 16 7 C entering comp...

Page 53: ...0 A1 B1 5 63 A1 A2 B1 63 A1 B1 B2 6 70 A1 A2 B1 70 A1 B1 B2 7 93 A1 A2 B1 B2 93 A1 A2 B1 B2 8 100 A1 A2 B1 B2 100 A1 A2 B1 B2 110 290B 315B 60 Hz A1 B1 1 14 A1 14 B1 2 29 A1 B1 29 A1 B1 3 36 A1 B1 36...

Page 54: ...B1 28 A1 B1 4 33 A1 B1 33 A1 B1 5 44 A1 A2 B1 44 A1 B1 B2 6 50 A1 A2 B1 50 A1 B1 B2 7 61 A1 A2 B1 B2 61 A1 A2 B1 B2 8 67 A1 A2 B1 B2 67 A1 A2 B1 B2 9 78 A1 A2 A3 B1 B2 78 A1 A2 B1 B2 B3 10 83 A1 A2 A3...

Page 55: ...7 A1 A2 B1 B2 67 A1 A2 B1 B2 5 83 A1 A2 A3 B1 B2 83 A1 A2 B1 B2 B3 6 100 A1 A2 A3 B1 B2 B3 100 A1 A2 A3 B1 B2 B3 190 290A 360A 390B 50 Hz A1 1 11 A1 11 A1 2 17 A1 17 A1 3 28 A1 B1 28 A1 B1 4 33 A1 B1...

Page 56: ...ctronic Expansion Valve T Thermistor TXV Thermostatic Expansion Valve Fig 21 Typical Thermistor Locations SIZE 080 110 SIZE 130 210 And associated modular units see Table 1 Fig 22 Thermistor T3 and T4...

Page 57: ...ec tronic control system that normally does not require service For details on controls refer to Controls and Troubleshoot ing literature 30GT080 110 AND 230B 315B UNIT CONTROL BOX Viewed facing compr...

Page 58: ...30A 315A and 330A B 420A B only 3 Open the air vent at the top of the cooler and open the drain on the bottom of the cooler near the leaving fluid outlet to drain the cooler Both the drain and the air...

Page 59: ...7 Close the air vent at the top of the cooler and close the drain on the bottom of the cooler near the leaving fluid outlet Both the drain and the air vent are located on the leaving fluid end of the...

Page 60: ...erant leaks with soap solution or Halide device 6 Replace cooler insulation Condenser Coils COIL CLEANING Clean coils with a vacuum cleaner fresh water compressed air or a bristle brush not wire Units...

Page 61: ...oad ing the compressor This is commonly referred to as MOP maximum operating pressure If it appears that EXV is not properly controlling operat ing suction pressure or superheat there are a number of...

Page 62: ...on processor board and that thermistor probes are located in proper position in refrigerant circuit Fig 21 and 23 When above checks have been completed actual opera tion of EXV can be checked by usin...

Page 63: ...859 3 906 88 1 832 3 814 89 1 805 3 726 90 1 778 3 640 91 1 751 3 556 92 1 725 3 474 93 1 699 3 395 94 1 673 3 318 95 1 647 3 243 96 1 622 3 170 97 1 597 3 099 98 1 572 3 031 99 1 548 2 964 100 1 523...

Page 64: ...9 5 1 912 4086 30 0 1 887 4000 30 5 1 862 3915 31 0 1 837 3832 31 5 1 813 3752 32 0 1 789 3674 32 5 1 764 3597 33 0 1 741 3523 33 5 1 717 3450 34 0 1 693 3379 34 5 1 670 3310 35 0 1 647 3243 35 5 1 62...

Page 65: ...ooler by controlling flow of refrigerant into cooler Superheat can be reset but should be reset only if absolutely necessary When optional TXVs are used thermistors T5 T6 T7 and T8 are eliminated see...

Page 66: ...awn from coupling for service TO REPLACE THERMISTORS T1 T5 T6 T7 AND T8 Add a small amount of thermal conductive grease to ther mistor well Thermistors are friction fit thermistors which must be slipp...

Page 67: ...ly to processor board Switch is set to open at approximately 5 psig 35 kPa and to close at 9 psig 62 kPa maximum If switch opens when compressor is running processor board stops all com pressors in ci...

Page 68: ...ON A device is located on suc tion line designed to relieve pressure on a temperature rise to approximately 170 F 77 C PRESSURE RELIEF VALVES Where relief valves are installed there is one in each cir...

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