Replacement Of Defrost Heater - Panasonic NR-B29SG2 Service Manual

10.10. Replacement of Defrost Heater

Warning: This process needs gas defla-
tion, gas re-charging and welding pro-
cesses so its need to be done by trained
professionals.
Instructions of gas deflation, gas re-charg-
ing and welding processes will be given at
appendix as a separate presentation.
Warning: Make sure the unit is unplugged.
1. First remove the airflow cover, take out the fan connec-
tors, cut off the fan connections (black cables) and
remove the fan motor box from its place as told in [Fan
motor Replacement] section before.
Note: To disconnect the connectors pull Them to the
down to release the tabs on connectors.
2. Cut off the cable tie ant remove the bitumen covering the
tubes.
Note: Keep bitumen for re-sealing the tubes after
replacement.
Warning: Before cutting the tube follow the Instruc-
tions of gas deflation, gas re-charging and welding
given at appendix and make sure the gas is evacu-
ated.
3. To take out the evaporator, tubes need to be cut with oxy-
gen welding.
Note: You need to protect the plastic cabinet from the
fire of welding with a protector as shown in the below
pictures.
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