CPS FX1234, Service Manual, Page: 7 / 57

7
EVACUATION
After the mobile a/c system is repaired, it should then be pulled into a deep vacuum to remove residual gasses and
moisture before recharging it with refrigerant. The unit evacuates gasses from the a/c system through the LO Side
and HI Side service hoses. The gasses enters the unit through the two service hoses attached to the LO and HI
Manifold. The gasses will then pass through their respective open LO and HI valves (LV1 and LV2). The combined
HI and LO gasses then flows through the open EVACUATION valve (LV3) and then into the VACUUM PUMP.
The VACUUM PUMP exhausts the evacuated gasses to the atmosphere.
IMPORTANT: if either the LO or HI manifold gauges read more than 5 psig, the unit will not start the evacuation
mode, but go into the RECOVER mode to recover the gasses causing the pressure.
The Evacuation mode will run per the programmed time set by the user.