Hoshizaki fh1-ssb Manual Suplementar

31

1. Ensure all components, fasteners and thumbscrews are securely in place 

after the equipment is serviced.

. The Polyol Ester (POE) oils used in R-404A units can absorb moisture 

quickly. Therefore it is important to prevent moisture from entering the system 
when replacing or servicing parts.

3. Always install a new drier every time the sealed refrigeration system is 

opened. Do not replace the drier until after all other repair or replacement 
has been made.

4. Do not leave the system open for longer than 15 minutes when replacing or 

servicing parts.

Do not use R-404A as a mixture with pressurized air for leak testing. 
Refrigerant leaks can be detected by charging the unit with a trace of 
refrigerant, raising the pressure with nitrogen and using an electronic leak 
detector.

The unit is provided with refrigerant access valves. Using proper refrigerant practices 
recover the refrigerant from the access valves and store it in an approved container. Do 
not discharge the refrigerant into the atmosphere.

1. Refrigerant R-404A itself is not flammable at atmospheric pressure and 

temperatures up to 176°F (80°C). 

. Refrigerant R-404A itself is not explosive or poisonous. However, when 

exposed to high temperatures (open flames) R-404A can be decomposed to 
form hydrofluoric acid and carbonyl fluoride both of which are hazardous. 

3. Always recover the refrigerant and store it in an approved container. Do not 

discharge the refrigerant into the atmosphere.

4. Do not use silver alloy or copper alloy containing arsenic.
5. Do not use R-404A as a mixture with pressurized air for leak testing. 

Refrigerant leaks can be detected by charging the unit with a trace of  
refrigerant, raising the pressure with nitrogen and using an electronic leak 
detector.