Friedrich hazardgarg r-410a Manual De Usuario

3.     After  all  refrigerant  has  been  recovered,  disconnect  

suction and discharge lines from the compressor and  

remove compressor. Be certain to have both suction  

and discharge process tubes open to atmosphere. 

4.     Carefully pour a small amount of oil from the suction  

stub  of  the  defective  compressor  into  a  clean 

container.  

9.      Evacuate the system with a good vacuum pump capable    

of a final vacuum of 200 microns or less. The system 

should be evacuated through both liquid line and suction 

line gauge ports. While the unit is being evacuated, seal 

all openings on the defective compressor. Compressor 

manufacturers will void warranties on units received not 

properly sealed. Do not distort the manufacturers tube 

connections.   

10.    Recharge  the  system  with  the  correct  amount  of 

  refrigerant.  The  proper  refrigerant  charge  will  be 

   found on the unit rating plate. The use of an accurate

         measuring device, such as a charging cylinder,

         electronic scales or similar device is necessary.

 

5.     Using an acid test kit (one shot or conventional kit), test  

the  oil  for  acid  content  according  to  the  instructions  

with the kit. 

6.   If any evidence of a burnout is found, no matter how  

slight, the system will need to be cleaned up following  

proper procedures. 

7.    Install the replacement compressor. 

8.  Pressurize with a combination of R-410A and nitrogen  

      and  leak  test  all  connections  with  an  electronic  or  

      Halide  leak  detector.  Recover  refrigerant  and  repair 

      any leaks found. 

 

Repeat Step 8 to insure no more leaks are present.

The use of nitrogen requires a pressure

regulator. Follow all safety procedures and 

wear protective safety clothing etc. 

Failure to follow proper safety procedures 

result in serious injury or death. 

Proper safety procedures must be followed, 

and proper protective clothing must be worn 

when working with liquid refrigerant.

Failure to follow these procedures could 

result in minor to moderate injury.

20

Turn off electric power before service or 

installation.

Failure to do so may result in personal injury, 

or death.

Sealed Refrigeration System contains refrigerant 

and oil under high pressure.

Proper safety procedures must be followed, 

and proper protective clothing must be worn 

when working with refrigerants.

Failure  to  follow  these  procedures  could 

result in serious injury or death. 

The use of nitrogen requires a pressure

regulator. Follow all safety procedures and 

wear protective safety clothing etc. 

Failure to follow proper safety procedures 

result in serious injury or death. 

1.

2.

3.

4.

5.

Recover all refrigerant and oil from the system.  

 

Remove compressor, capillary tube and filter drier  

from the system.  

 

Flush evaporator condenser and all connecting 

tubing with dry nitrogen or equivalent. Use approved 

flushing agent to remove all contamination from 

system. Inspect suction and discharge line for 

carbon deposits. Remove and clean if necessary. 

Ensure all acid is neutralized. 

 

Reassemble the system, including new drier strainer 

and capillary tube. 

Proceed with step 8-10 on previous section.