Mazda 1996 626, Service Manual, Page: 274 / 533

G
HEATER AND REFRIGERANT SYSTEM
r e c e iv e r
/
d r ie r
Removal I Installation
1. Discharge the refrigerant from the system.
2. Disconnect the pipes from the receiver/drier.
3. Remove the receiver/drier.
4. Install in the reverse order of removal. Apply clean com­
pressor oil to the O-rings before connecting the fittings.
When installing a new receiver/drier, add 10 ml {10 cc,
0.3 fl oz} of compressor oil through the high-pressure
side of the A/C compressor.
Tightening torque:
7.9—11.7 N m {80— 120 kgfcm, 70—104 inlbf}
REFRIGERANT PRESSURE SWITCH
Removal / Installation
1. Discharge the refrigerant from the system.
2. Disconnect the refrigerant pressure switch connector
and remove the refrigerant pressure switch.
3. Install in the reverse order of removal. Replace the O-
ring.
DIFF. (MAX)
24.5 {0.25, 3.56}
ON
OFF
1 90— 2 20
{1 .9 — 2 .3 , 28— 3 2 }
2,950—3,330
{30.0—34.0, 427— 483}
ON
OFF
DIFF.400—780
{4.0—8.0, 57—110}
kPa {kgf/cm11, psi}
REFRIGERANT
PRESSURE SWITCH
Inspection
If problems occur in the refrigerant system that cause
abnormally high pressure (above 2,950—3,330 kPa
{30.0—34.0 kgf/cm2 427—483 psi}) or abnormally low
pressure (below 190—220 kPa {1.9—2.3 kgf/cm2, 28—32
psi}), the refrigerant pressure switch will cut power to the
magnetic clutch to protect the mechanical components. If
the pressure recovers to within normal operating range,
the power will be restored.
1. Connect a manifold gauge set to the charging valve;
verify that the high-pressure side reads 260—2150 kPa
{2.6—22.0 kgf/cm2, 37—312 psi}.
2. Disconnect the refrigerant pressure switch connector
and verify that there is continuity between the switch
terminals.
3. If there is not continuity, replace the refrigerant pressure
switch.
G -6 0