Carrier X-POWER Series Service Manual page 116

R410a DC Inverter 60Hz Carrier service manual
It is qualified when vacuum degree is under -755mmHg; if the vacuum degree is still above -755mmHg
within 2 hours drying, please repeat the procedures of "vacuum damage---vacuum drying".
d. Vacuum placement test: when the vacuum degree reaches -755mmH, keep rest for 1 hour. If the
indicator of vacuum gauge does not go up, it is qualified. If going up, it indicates that there is moisture
and leak source.
134 Installation