Mazda Training manual - part 283

AIR CONDITIONING 
SG01 - Basic System

 

 

SG01-11

TC070-15-01H

 
Handling Compressor Oil 
• Use only ATMOS GU10 compressor oil for this vehicle. Using a PAG oil other than 

ATMOS GU10 compressor oil can damage the A/C compressor.  

 
• Do not spill ATMOS GU10 compressor oil on the vehicle. A drop of compressor oil 

on the vehicle surface can eat away at the paint. If oil gets on the vehicle, wipe it off 
immediately. 

 
• ATMOS GU10 compressor oil (PAG oil) has higher moisture absorption efficiency 

than the previously used mineral oil. If moisture mixes with the compressor oil, the 
refrigerant system could be damaged. Therefore, install caps immediately after 
using the compressor oil or removing refrigerant system parts to prevent moisture 
absorption. 

 

Moisture Absorption 

 

0 

 
• If the refrigerant gas is completely discharged from the system for reasons such as 

a malfunction during A/C operation, repair or replace the malfunctioning part, charge 
the refrigerant to the specified amount and always add 60 ml {60 cc, 2.03 fl oz} of 
compressor. If the compressor oil is not adequately replenished, the A/C 
compressor may quickly deteriorate, abnormal noise may develop, cooling 
performance may be affected or, in the worst case, the A/C compressor may seize. 

AIR CONDITIONING 
SG01 - Basic System

 

 

SG01-12

TC070-15-01H

 
HVAC ABBREVIATION 
 
A/C: Air Conditioning 
B+: Battery Positive Voltage 
CAN: Control Area Network 
CPU: Central Processing Unit 
HI: High 
IG: Ignition 
ISO: International Organization for Standardization 
LO: Low 
M: Motor 
MAX: Maximum 
OFF: Switch Off 
ON: Switch On 
PCM: Powertrain Control Module 
REC: Recirculate 
SW: Switch 
 
 
Item Specification (Mazda 3) 
 
Heating capacity (kW {kcal/h}): 4.550 {3,913} 
Cooling capacity (kW {kcal/h}): 3.960 {3,406} 
Refrigerant  

Type: R-134a 
Regular amount: (approx. quantity) (g {oz}) 525 {18.5} 

A/C compressor  

Type: Vane-rotary 
Discharge capacity (ml {cc, fl oz}): 120 {120, 4.06} 
Max. allowable speed (rpm): 6,400/Z6, 7,200/LF 

Lube oil  

Type: ATMOS GU10 
Sealed volume (approx. quantity) (ml {cc, fl oz}): 120 {120, 4.06}/Z6,  

150 {150, 5.07}: LF 

Condenser 

Type: Multi-flow (sub-cooling type) 
Radiated heat (kW {kcal/h}): 6.600 {5,680} 

Receiver/drier capacity (ml {cc, fl oz}): 180 {180, 6.08} 
Desiccant: Synthetic zeolite 
Expansion valve type: Block type 
Evaporator type: Double-tank drawn cup 
Temperature control: Reheat full air mix type 
 
 
 
 
 
 
 

AIR CONDITIONING 
SG01 - Basic System

 

 

SG01-13

TC070-15-01H

 
Review Exercise 
 
 
 
 
 

 

1. Name the components.  
 

   

 

 

   

 

 

   

 

 

 

AIR CONDITIONING 
SG01 - Basic System

 

 

SG01-14

TC070-15-01H

2. Explain the function of the “Airflow Mode Door”. 
 
 
 
 
 
 
 
 
 
3. Explain the function of the “Air Mix Door”. 
 
 
 
 
 
 
 
 
 
4. Explain the function of the “Air Filter”. 
 
 
 
 
 
 
 
 
 
5. Explain the purpose of the “Thermal Protector” and where it is located.