MicroLinks Tech H-CAM Instrucciones de operaciones descargar pdf (Pagina 111)

TM 11574A-OI

3-17

(d) Compressor cleanup after mild burnout.

WARNING

Observe all safety precautions while working on system. Avoid contact with refrigerant/oil

mixture since acid burns may result. Wear safety glasses and work gloves.

NOTE

There are two types of burnout cleanup covered in the following section; Mild Burnout

and Severe Burnout. Mild burnout is a non-running motor burn with the motor

contaminants confined to the compressor. Severe burnout is a running motor burn where

the contaminants are pumped through the system. This type of failure accounts for 3 to

5% of all motor burnouts.

Shut off power, then remove refrigerant charge from compressor using suitable

refrigerant recovery device. Do not blow charge to the atmosphere.

Remove compressor leaving service valves.

Replace compressor.

Replace liquid line filter with one size larger in capacity than the unit being worked

on.

Triple evacuate down to 29 inches of mercury, breaking twice with refrigerant. Pull a

deep vacuum of 500 microns before recharging.

Recharge unit compensating for larger liquid line filter.

Run a minimum of one hour and replace liquid line filter.

Acid check oil. If acid is present, change oil.

(e) Compressor cleanup after severe burnout.