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Section 6 - Refrigeration System (cont.)

Refrigeration Specifications

Refrigerators - Self-Contained

R1, R2, R3 (R-134A) ..................................................................................................6-5

RS1, RS2, RS3 (R-402B)............................................................................................6-5

RS1, RS2, RS3 (R-22) ................................................................................................6-6

Refrigerators - Remote

RR1, RR2, RR3...........................................................................................................6-6

Freezers - Self-Contained

F1, F2, F3 (R-404A)....................................................................................................6-7

FS1, FS2, FS3 (R-402B) .............................................................................................6-7

FS1, FS2, FS3 (R-502)................................................................................................6-8

Freezers - Remote

FR1, FR2, FR3 ............................................................................................................ 6-8

Control Specifications and Diagnostics

High Pressure Cutout (HPCO)..........................................................................................6-9

Liquid Injector Valve (R-402B Freezer Only) ..................................................................6-9

Refrigerant Conversion Procedures

Refrigerators - RS1, RS2, RS3 - Converting R-402B to R-22........................................6-10

Freezers - FS1, FS2, FS3 - Converting R-502 to R-402B............................................... 6-11

Refrigerant Recovery/Evacuating and Recharging

Refrigerant Recovery/Evacuation ...................................................................................6-13

Charging Procedures .......................................................................................................6-14

System Contamination Cleanup......................................................................................6-15

Replacing Pressure Controls Without Removing Refrigerant Charge............................6-17

Filter Driers ..................................................................................................................... 6-19

Total System Refrigerant Charges

Refrigerators - Self-Contained ..................................................................................6-20

Refrigerators - Remote..............................................................................................6-20

Freezers - Self-Contained..........................................................................................6-20

Freezers - Remote...................................................................................................... 6-20

Refrigerant Re-Use Policy...............................................................................................6-21

Charging R-402B (HP81) Using Charging Cylinders.....................................................6-22

Refrigerant Definitions.................................................................................................... 6-22

Questions and Answers

R-402B (DuPont SUVA HP81) ................................................................................6-23

HFC Refrigerant........................................................................................................ 6-24

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Victory Reach-In Manuale di Servizio Pagina 5