Victory Reach-In Instrukcja Obsługi Pobierz pdf (Strona 65)

Section 6 Refrigeration System

6-23

Questions and Answers

R-402B (DUPONT SUVA HP81)

1. Is R-402B flammable?

No. It is U.L. and ASHRAE classified as

“practically non-flammable.” The same

rating is given to R-22 and R-502. R-402B

has an ignition temperature of 1185°F

(641°C), which makes it less flammable

than R-22, at 1169°F (632°C).

2. Is R-402B toxic?

The EPA exposure limit rating for R-402B is

1000 ppm, the highest rating given by the

EPA for a refrigerant. R-402B carries the

same rating as R-12, R-22 and R-502.

3. Is a special compressor oil required with

R-402B?

No. Manitowoc products use standard mineral

or alkylbenzene compressor oil with R-

402B, the same as R-22 and R-502.

4. How do I leak-check a system containing

R-402B?

Standard soap bubbles, halide torches, and

standard electronic leak detectors work.

5. Do I have to recover R-402B?

Yes. Like other refrigerants, government

regulations require recovering R-402B.

6. Will R-402B separate if I have a leak in

the system?

No. Like R-502, the degree of separation is

too small to detect.

7. How do I charge a system with R-402B?

The same as R-502. Manitowoc recommends

charging only liquid refrigerant into the

high side of the system.

8. Can I put R-402B into R-502 Reach-In

freezers?

Yes. R-402B refrigerant can be used as an

alternative replacement refrigerant in

Manitowoc R-502 Reach-In freezers.

Contact your Manitowoc distributor for a

field conversion kit.

9. Where can I purchase R-402B?

DuPont refrigerants, including SUVA

products, are available through more than

1,300 authorized distributors in the U.S.

10. Is special equipment required to service

R-402B?

No. Standard refrigeration gauges, hoses,

recovery systems, driers, vacuum pumps,

etc. are compatible with R-402B.

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