Victory Reach-In Instrukcja Obsługi Pobierz pdf (Strona 52)

Section 6Refrigeration System

6-10

Refrigerant Conversion Procedures

Refrigerators - RS1, RS2, RS3

Converting R-402B to R-22

CAUTION

Use only R22 as a retrofit refrigerant. Other

replacement refrigerants may cause poor

performance and/or component failure.

Equipment Modification Requirements

Component Change Required

Compressor None - No oil

change Required

Capillary Tube None

High Pressure Cutout None

Fan Cycling Control

(air-cooled)

None

Heat Exchanger None

Electrical Wiring None

Branch Circuit Fuse

Size

None

Air-Cooled

Condenser

None

Evaporator None

Refrigerant Charge Same amount as old

R-402B charge

PERFORMANCE AFTER CONVERSION

• Operating discharge (high side) pressure -

Air-cooled models will run 20-70 psig

lower than with R-402B

• Operating suction (low side) pressure -

Will run 0-20 psig lower than with

R-402B

• Interior cabinet temperature - remains the

same as with R-402B

Refer to R-22 specification chart on page 6-6.

PROCEDURE

1. Recover R-402B refrigerant from the

Reach-In in accordance with local and

national governing laws.

2. Refer to the “Equipment Modification

Requirements” chart on this page.

3. Remove and replace the liquid line filter

drier. Use only a Manitowoc-approved

OEM filter drier.

NOTE: The compressor oil does not require

changing.

4. Evacuate the Reach-In. (For procedure,

refer to page 6-13.)

5. Charge the Reach-In with R-22

refrigerant. The system charge is identical

to the R-402B (HP 81) charge listed on

the model/serial number tag.

NOTE: Charge with liquid only into the high

side of the Reach-In. Use the weighing in

method or “Dial-a-Charge.” Refer to page

6-14.

6. Remove the R-402B (HP 81) labels from

the compressor and near the front of the

control box. Do not remove the

model/serial number tags.

7. Attach a conversion label next to each

serial number plate and next to the service

valves or the front of the control box.

Important

Write the service company name and

conversion date on each label.

8. Start the Reach-In. Verify that it operates

properly.

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