Scotsman FME800R Manual de servicio descargar pdf (Pagina 35)

REFRIGERATION SERVICE: R-404A

THIS ICE MACHINE USES R-404A (HP62)

REFRIGERANT AND POLYOLESTER

COMPRESSOR OIL.

DO NOT USE MINERAL OIL IN THIS

REFRIGERATION SYSTEM.

••HP62 is a "Near Azeotrope", and therefore

liquid charging is preferred.

••When the system is serviced, a special liquid

line dryer is required.

••Polyolester oil absorbs water very easily, and

therefore when the system is opened for

service, it must be re-sealed as soon as

possible (15 minutes maximum).

••Special leak detection equipment is required to

locate small refrigerant leaks. Usually a leak

detector capable of detecting a Halogenated

refrigerant or HFC-134A will work. Check with

the leak detector manufacturer if in doubt.

••As with any other refrigerant, do NOT mix HP62

with pressurized air when leak testing.

Pressure-Temperature Chart for HP62

VAPOR VAPOR

TEMP. PRESSURE TEMP. PRESSURE

(DEG F) (PSIG) (DEG F) (PSIG)

-20 . . . . . . 17 70 . . . . . . 146

-18 . . . . . . 18 72 . . . . . . 150

-16 . . . . . . 20 74 . . . . . . 155

-14 . . . . . . 21 76 . . . . . . 161

-12 . . . . . . 23 78 . . . . . . 166

-10 . . . . . . 24 80 . . . . . . 171

-8 . . . . . . 26 82 . . . . . . 177

-6 . . . . . . 28 84 . . . . . . 182

-4 . . . . . . 29 86 . . . . . . 188

-2 . . . . . . 31 88 . . . . . . 194

0 . . . . . . 33 90 . . . . . . 200

2 . . . . . . 35 92 . . . . . . 206

4 . . . . . . 37 94 . . . . . . 212

6 . . . . . . 39 96 . . . . . . 219

8 . . . . . . 41 98 . . . . . . 225

10 . . . . . . 43 100 . . . . . 232

12 . . . . . . 46 102 . . . . . 239

14 . . . . . . 48 104 . . . . . 246

16 . . . . . . 50 106 . . . . . 253

18 . . . . . . 53 108 . . . . . 260

20 . . . . . . 55 110 . . . . . 268

22 . . . . . . 58 112 . . . . . 275

24 . . . . . . 60 114 . . . . . 283

26 . . . . . . 63 116 . . . . . 291

28 . . . . . . 66 118 . . . . . 299

30 . . . . . . 69 120 . . . . . 307

32 . . . . . . 72 122 . . . . . 316

34 . . . . . . 75 124 . . . . . 324

36 . . . . . . 78 126 . . . . . 333

38 . . . . . . 81 128 . . . . . 342

40 . . . . . . 85 130 . . . . . 351

42 . . . . . . 88 132 . . . . . 360

44 . . . . . . 91 134 . . . . . 370

46 . . . . . . 95 136 . . . . . 379

48 . . . . . . 99 138 . . . . . 389

50 . . . . . . 102 140 . . . . . 399

52 . . . . . . 106 142 . . . . . 409

54 . . . . . . 110 144 . . . . . 420

56 . . . . . . 114 146 . . . . . 430

58 . . . . . . 118 148 . . . . . 441

60 . . . . . . 123 150 . . . . . 452

62 . . . . . . 127 152 . . . . . 464

64 . . . . . . 132 154 . . . . . 475

66 . . . . . . 136 156 . . . . . 487

68 . . . . . . 141 158 . . . . . 499

FME800R

August 1993

Page 35

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