Water Based White Glue pva

Bitzer refrigeration oil replacement conditions:
1, the unit for a long time to work, the compressor has reached the maintenance time (the initial operation of the unit 2000 hours, after the cumulative three years or running time more than 10000 ~ 12000 hours);
2, because the motor burned and replace the compressor; replace the compressor after 100 hours of continuous operation of the fluorine system;
3, for the scene assembled units or close to the working conditions of the unit under the limit, in the cumulative operation of 100 hours after the replacement of frozen oil;