Owner's Manual

MTC-10
PRECAUTIONS
SERVICE COUPLERS
Never attempt to connect HFC-134a (R-134a) service couplers to an
CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers will
not properly connect to the CFC-12 (R-12) system. However, if an
improper connection is attempted, discharging and contamination
may occur.
CHARGING CYLINDER
Using a charging cylinder is not recommended. Refrigerant may be vented into air from cylinder's top valve
when filling the cylinder with refrigerant. Also, the accuracy of the cylinder is generally less than that of an
electronic scale or of quality recycle/recharge equipment.
Wiring Diagrams and Trouble Diagnosis EJS001AF
When you read wiring diagrams, refer to the following:
● GI-13, "How to Read Wiring Diagrams"
● PG-5, "Wiring Diagram — POWER —"
When you perform trouble diagnosis, refer to the following:
● GI-9, "How to Follow Trouble Diagnoses"
● GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident"
Shut-off valve rotation A/C service valve
Clockwise Open
Counterclockwise Close
RHA273D