Friedrich SS15N30* ユーザーズマニュアル

47

1.  Be certain to perform all necessary electrical and 

refrigeration tests to be sure the compressor is 

actually defective before replacing. 

2.  Recover all refrigerant from the system though 

the process tubes. 

EPA REGULATIONS IS REQUIRED.  Do not use 

gauge manifold for this purpose if there has been 

a  burnout.  You  will  contaminate  your  manifold  and 

hoses. Use a Schrader valve adapter and copper 

tubing for burnout failures.

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.

Unplug and/or disconnect all electrical power 

to the unit before performing inspections, 

maintenances or service.  

 

Failure to do so could result in electric shock, 

serious 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. 

Extreme care, proper judgment and all safety 

procedures  must  be  followed  when  testing, 

troubleshooting, handling or working around 

unit while in operation with high temperature 

components. Wear protective safety aids 

such as: gloves, clothing etc. 

Failure to do so could result in serious burn 

injury.

The use of a torch requires extreme care and proper 

judgment. Follow all safety recommended precautions and 

protect surrounding areas with fire proof materials. Have 

a fire extinguisher readily available. Failure to follow this 

notice could result in moderate to serious property damage.

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.