Haier DW-86L288 Service Manual page 56

Perfusion refrigerant
high temperature level perfusion, the machine should be in a stopped state
before perfusion R134A refrigerant and then perfusion R404A refrigerant.
Perfusion was performed in accordance with the attached table!
Note
1) To ensure the refrigerant once reperfusion in place, the above refrigerant is
required when the cylinder is inverted perfusion liquid perfusion in Figure 5
2) Low‐level refrigerant reperfusion, the same machine should be in a stopped
state, first perfusion HRA refrigerant, then perfusion HRB refrigerant, because
of higher the HRB refrigerant pressure. Perfusion was performed in accordance
with the attached table!
Irrigation after the infusion process tube sealing, sealing effect is shown in
Figure 6
Note
1) Low Temperature perfusion must be accurate, small differences will affect
the cooling effect
2) low temperature and high pressure refrigerant, refrigerant cylinder is
relatively small, perfusion, to open the cylinder valve slowly to avoid the waste
of refrigerant.
3) HRB refrigerant pressure is too high, the general cylinders can not withstand
the high pressure, so the use of oxygen bottles filled irrigation HRB refrigerant
cylinder below the export blocked with screws to prevent the leakage of
56 / 88