Scotsman FME1200R, Руководство по обслуживанию

Страница: 32 / 36

REFRIGERATION SYSTEM SERVICE
ACCESS
VALVE
ALLEN
WRENCH
Torque Stem
to 6-8 ft. lb..
Torque Cap
to 8-12 ft. lb..
Torque Cap
to 7-12 ft. lb..
VAPOR VAPOR
TEMP. PRESS. TEMP. PRESS.
(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
Pressure-Temperature Chart for HP62
This ice machine uses R-404A (HP62) refrigerant and polyolester oil. Do
NOT use mineral oil in this refrigeration system.
••
R-404A is a "Near Azeotrope" so liquid charging is required:
••
When the system is serviced, a special liquid line drier is required. It is
included with replacement compressors.
••
HP62 is not compatible with mineral oil, so these ice machines use
Polyolester oil. Polyolester oil absorbs water very easily. When one of
these refrigeration systems 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 Halongenated
refrigerant or HFC-134a will work. Check with the leak detector
manufacturer if in doubt.
Access Valves: To use the access valves:
••
Remove the cap from the stem, use a 3/16" allen wrench to check
that the valve is CLOSED. The remove the core cap.
••
Close the valve and replace the caps when the job is finished.
The valve must be closed and the caps must be on or the
valve will leak.
NME950R & FME1200R
December 1995
Page 32