Quickly Checking Of Refrigerant Charge - Suzuki Ignis Service Manual

CHECKING REFRIGERANT CHARGE
Item Symptom
No.
1 Bubbles observed in sight glass
2 No bubbles observed in sight glass No or insufficient charge of
3 No temperature difference between
compressor inlet and outlet
4 Noticeable temperature difference
between compressor inlet and out-
let
5 When A/C is turned OFF, refriger-
ant in sight glass clears immedi-
ately and remains clear
6 When A/C is turned OFF, refriger-
ant in sight glass once produces
bubbles and then clears
NOTE:
For specified amount of refrigerant, refer to "OPERATION PROCEDURE FOR A/C WITH REFRIGER-
ANT" in this section.
QUICKLY CHECKING OF REFRIGERANT
CHARGE
The following procedure can be used for quickly checking
whether the A/C system has a proper charge of refrigerant or not.
Run engine at fast idle, and operate A/C at its maximum cooling
capacity for a few minutes.
Then, look at the sight glass (1) on condenser outlet pipe (2) and
compare what is observed with the symptoms listed in below.
[A] : LH model
[B] : RH model
Charge of refrigerant condi-
tion
Insufficient charge of refrigerant
in system
refrigerant in system
Empty or nearly empty system
Proper or too much charge of
refrigerant in system
Too much charge of refrigerant
in system
Proper charge of refrigerant in
system
AIR CONDITIONING (OPTIONAL) 1B-9
3. Bubbles
4. A/C refrigerant pressure switch
Correction
Check system for leaks with a
leak tester.
Refer to the items 3 and 4.
Evacuate and charge system
and then check it for leaks with
a leak tester.
Refer to the items 5 and 6.
Recharge with specified amount
of refrigerant.
No correction needed because
charge of refrigerant is normal.