Haier DW-86L486, Руководство по послепродажному обслуживанию

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-------Internal training document for Haier service provider. External disclosure is prohibited --- Classification
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[Notes]
*The vacuum pump above 4L shall be pumped for 12h.
8.5.4 Charging Refrigerant
1) When the high temperature refrigerant is filled, the machine shall be off. Firstly, fill R134A refrigerant
and then fill R404A refrigerant. Please fill according to the attached table!
[Notes]
* In order to ensure charging the refrigerant once in place, the steel cylinder must be put upside down for
charging the above refrigerant. See Fig. 5.
2) When the low temperature refrigerant is filled, the machine shall also be off. Firstly, fill HRA refrigerant
and then fill HRB refrigerant, and also the HRB refrigerant pressure shall be higher. Please strictly fill
according to the attached table!
3) Seal up the charging process pipe well after charging. See Fig. 6 for the sealing effect.
[Notes]
* The low temperature refrigerant charge must be accurate, because even a tiny little difference may
affect the refrigerating effect.
* The low temperature refrigerant pressure is high and the refrigerant charge is very low, so the steel
cylinder valve shall be switched on slowly to avoid wasting the refrigerant.
* If the pressure of HRB refrigerant is too high and unbearable for a normal steel cylinder, HRB
refrigerant shall be filled in an oxygen cylinder. When using, the outlet at the bottom of the steel cylinder
shall be blocked so as to avoid refrigerant leakage and then you can use the outlet on the top for
charging. When the refrigerant is filled as above, the steel bottle can be kept vertical for filling gas.
* In order to ensure that the refrigerant is filled accurately, the electronic scale must be used for weighing
and charging all refrigerants.
* Once Haier headquarter discovers that the freezer makes poor refrigerating performance or fails to
refrigerate or the machine is replaced because of failure to meet the above requirement and operation
instruction for pumping and charging the refrigerant, the double maintenance cost shall be borne by the
relevant dealer to the user claiming for repairing the machine again and also the replacing machine shall
be borne by the dealer if any.
* The requirement for the accuracy of the refrigerant charge (g) of the ULT freezer product series is very
strict. The dealer must prepare a standard electronic scale with the tolerance of 2g before maintenance.
Fig. 5 Fig. 6
Fig. 1 Fig. 2 Fig. 3
Fig. 4
Less than 3Pa