Mazda CX-7 2007 Workshop Manual page 1146

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 a
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.
• 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 A/C
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.
End Of Sie
REFRIGERANT SYSTEM GENERAL PROCEDURES
Manifold Gauge Set Installation
1. Fully close the valves of the manifold gauge.
2. Connect the charging hoses to the high and low-
pressure side joints of the manifold gauge.
3. Connect the quick couplers to the ends of the
charging hoses.
4. Connect the quick couplers to the charging
valves.
End Of Sie
WM: REFRIGERANT
REFRIGERANT CHARGING
Caution
• Do not exceed the specification when charging the system with refrigerant. Doing so will decrease
the efficiency of the air conditioner or damage the refrigeration cycle parts.
Charging Recycled R-134a Refrigerant
1. Connect an R-134a recovery/recycling/recharging device to the vehicle and follow the device manufacturer's
instructions.
07-10–2
REFRIGERANT SYSTEM
CHARGING VALVE OF
LOW-PRESSURE SIDE
ATMOS GU10 COMPRESSOR OIL (PAG OIL)
MINERAL OIL
0
MANIFOLD GAUGE
CHARGING HOSE
CAP
TIME
acxuuw00000767
id071000800300
QUICK COUPLER
CAP
CHARGING
VALVE OF
HIGH-PRESSURE
SIDE
acxuuw00001560
id071000800400