Quickly Checking Of Refrigerant Charge - Suzuki RA410 Manual

1B-6 AIR CONDITIONING (OPTIONAL)
1
CHECKING REFREGERANT CHARGE
Item
No.
1 Bubbles observed in sight glass
2 No bubbles observed in signt glass
3 No temperature difference between
compressor inlet and outlet
4 Noticeable temperature difference
between compressor inlet and
outlet
5 When A/C is turned OFF,
refregerant in sight glass clears
immediately and remains clear
6 When A/C is turned OFF,
refregerant in sight glass once
produces bubbles and then clears
1
2
3. Bubbles
Symptom
QUICKLY CHECKING OF REFRIGERANT
CHARGE
CHARGE OF REFRIGERANT
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 max. cooling capacity
for a few minutes. Then, look at the sight glass (1) on receiver/dryer
outlet pipe (2) and compare what is observed with the symptoms
listed in "CHECKING REFRIGERANT CHARGE" table given below.
Charge of refrigerant
Insufficient charge of refrigerant
in system
No or insufficient charge of
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
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.
Discharge excess charge of re-
frigerant to adjust it to a speci-
fied charge.
NO CORRECTION NEEDED
BECAUSE CHARGE OF RE-
FRIGERANT IS NORMAL.