Refrigerating System; Charge Of Refrigerant; Checking Refrigerant Charge - Suzuki SQ416 Service Manual
Volume 1 of 2 chassis/electrical/body
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Also See for SQ416:
- Service manual (118 pages) ,
- Owner's manual (266 pages) ,
- Service manual (133 pages)
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LH steering vehicle shown
[A]
[B]
[A]: Condenser integrated with receiver / dryer model
[B]: Independent condenser and receiver / dryer model
1. Sight glass
3. Receiver / Dryer
2. Bubbles
CHECKING REFRIGERANT CHARGE
Item
Symptom
No.
Bubbles observed in sight glass
1
No bubbles observed in sight
2
glass
No temperature difference be-
3
tween compressor inlet and out-
let
Noticeable temperature differ-
4
ence between compressor inlet
and outlet
When A/C is turned OFF, refrig-
5
erant in sight glass clears im-
mediately and remains clear
When A/C is turned OFF, refrig-
6
erant in sight glass once pro-
duces bubbles and then clears
REFRIGERATING SYSTEM
CHARGE OF REFRIGERANT
The following procedure can be used for quickly checking whether
A/C system with proper charge of refrigerant or not.
1) Run engine at idle speed.
2) Operate A/C system at the following conditions for a few min-
utes.
D Blower motor switch at maximum position.
D Air outlet control button at face position.
D Temperature control lever at maximum cool position.
D Air inlet door at recirculation prosition.
D Vehicle door at all open.
3) Look at sight glass 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 refrig-
erant in system
Empty or nearly empty system
Proper or too much charge of re-
frigerant in system
Too much charge of refrigerant in
system
Proper charge of refrigerant in
system
AIR CONDITIONING (OPTIONAL) 1B-21
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 specified
charge.
NO CORRECTION NEEDED
BECAUSE CHARGE OF RE-
FRIGERANT IS NORMAL.
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