Expansion Block/Orifice Tube: Adjustments
In the event that difficulty is encountered during the removal of a restricted or plugged expansion (orifice) tube, the following procedure is recommended:
A. Remove as much of any impacted residues as possible.
B. Carefully apply heat with heat gun (hair drier, epoxy drier or equivalent) approximately 1/4 inch from dimples on inlet pipe. Do not overheat pipe.