System Evacuation - Honda Civic Service Manual

Heating and Air Conditioning
System Evacuation
Use only service equipment that is U.L.-listed and is
certified to meet the requirements of SAE J2210 to
r e m o v e H F C - 1 3 4 a ( R - 1 3 4 a ) f r o m t h e a i r c o n d i t i o n i n q
system.
lf accidental system discharge occurs, ventilate the
work area before resuming service.
Additional health and safety information may be
obtained from the refrigerant and lubricant
manufacturers.
1. When an Ay'C system has been opened to the
atmosphere, such as during installation or repair, it
must be evacuated using a R-134a refrigerant
recovery/recycling/charging station (lf the system
has been open for several days, the receiver/dryer
should be replaced, and the system should be
evacuated for several hours.)
. Air conditioning refrigerant or lubricant vapor
can irritate your eyes, nose, or throat.
. Be carefulwhen connecting service equipment.
. Do not breathe refrigerant or vapor.
21-54
2. Connect a R-134a refrigerant recovery/recycling/
charging station (A)to the high-pressure service
pon (B) and the low-pressure service port (C), as
shown, following the equipment manufacturer's
instructions. Evacuate the system.
lf the low-pressure does not reach more than 93.3
k P a { 7 0 0 m m H g , 2 7 . 6 i n . H g ) i n 1 5 m i n u t e s , t h e r e i s
probably a leak in the system. Partially charge the
system, and check for leaks (see step 3 on page 21-
56).
-i -
r4.t