Blue LP (Low-Pressure) side
A/C MANIFOLD
GAUGE SET
QUICK
REFERENCE
GUIDE
ITEM 92649
LP
Manifold
Valve
LP Coupler
Valve
Red HP (High-Pressure) side
LP and
Vacuum
Gauge
HP
Gauge
Sight
Glass
Manifold Valve
operation:
HP
Manifold
Valve
CCW
= close
(clockwise)
= open
(counterclockwise)
Coupler Valve
operation:
Secondary
Charging
Port
LP Coupler
CW
HP Coupler
Valve
Charging Hose
HP Coupler
CCW
= close
CW
= open
(counterclockwise)
(clockwise)
WARNING
To prevent SERIOUS INJURY and DEATH:
1.READ ENTIRE MANUAL BEFORE USE.
2.Use in well-ventilated area only.
3.Wear ANSI-approved safety goggles and
heavy-duty work gloves during setup and use.
4.DO NOT OPEN either Manifold Valve unless
directed to do so; otherwise, refrigerant leaks,
A/C contamination, and hazardous expulsion
of pressurized refrigerant may occur.
5.Keep gauge and hoses away
from moving engine parts.
6.Turn off vehicle’s engine and A/C system
before attaching gauge.
7.Technicians performing this procedure or
opening refrigeration circuit in automotive
air conditioning systems MUST be certified
in refrigerant recovery and recycling
procedures in compliance with section 609
of Clean Air Act Amendments of 1990.
WARNING
Diagnostic Check
A/C service can be dangerous.
To prevent SERIOUS INJURY,
read entire manual before use.
3
ATTACH COUPLERS:
Attach Couplers to
A/C system,
Blue to
suction LP port,
and Red to
discharge HP port.
1
4
CHECK:
1
KEEP
CLOSED
4
CW
CCW
2
3
2
Connect Red, Blue and Yellow Hoses
to Manifold and Couplers as shown,
RED – RED and BLUE – BLUE.
AFTER:
1
CW
Close Coupler Valves by
turning CCW.
Shut off engine and A/C
system if dynamic check
was done.
CAREFULLY
disconnect Couplers
from A/C system;
hoses may contain
residual refrigerant.
CW
KEEP
CLOSED
4
2
2
CW
1
1
CCW
3
To suction
LP port
CONNECT HOSES:
5
To do a dynamic check, turn on engine,
allow to warm up, then turn on A/C.
Open Coupler Valves - turn CW.
Compare Gauge readings to vehicle’s
service specifications.
To discharge
HP port
CLOSE ALL VALVES:
Manifold Valves - turn CW.
Coupler Valves - turn CCW.
4
WARNING
Recovery / Evacuation
RECOVERY / EVACUATION:
3
ATTACH COUPLERS:
Attach Couplers to
A/C system,
Blue to
suction LP port
and Red to
discharge HP port.
Turn on recovery system / vacuum pump.
Open Coupler Valves - turn CW.
Open Manifold Valves - turn CCW.
Read amount of vacuum on Blue LP Gauge.
1
4
4
CCW
CCW
CW
1
4
CW
CCW
2
3
5
AFTER:
Shut off recovery
system / vacuum
pump when vacuum
reaches manufacturer’s
recommendation.
Close Coupler Valves by
turning CCW.
Disconnect Couplers from
A/C system.
1
CW
2
To suction
LP port
CONNECT HOSES:
A/C service can be dangerous.
To prevent SERIOUS INJURY,
read entire manual before use.
Connect Red and Blue Hoses to Manifold
and Couplers as shown,
RED – RED and BLUE – BLUE.
Connect Yellow Hose to
refrigerant recovery system / vacuum pump.
4
2
2
To refrigerant
recovery system
/ vacuum pump
1
CW
1
CCW
3
To discharge
HP port
CLOSE ALL VALVES:
Manifold Valves - turn CW.
Coupler Valves - turn CCW.
WARNING
Charging
4
A/C service can be dangerous.
To prevent SERIOUS INJURY,
read entire manual before use.
CHARGING:
Turn on engine, allow to warm up,
then turn on A/C.
Open Coupler Valves - turn CW.
Only open BLUE Manifold Valve - turn CCW.
3
ATTACH COUPLERS:
Attach Couplers to
A/C system,
Blue to
suction LP port
and Red to
discharge HP port.
1
1
4
CCW
CW
2
2
KEEP
CLOSED
CW
1
4
CW
CCW
2
3
To suction
LP port
CONNECT HOSES:
Connect Red and Blue Hoses to Manifold
and Couplers as shown,
RED – RED and BLUE – BLUE.
Connect Yellow Hose to R-134a supply.
KEEP R-134A CAN/CYLINDER UPRIGHT.
5
AFTER:
2
To R-134a
supply
1
After charging
manufacturer
recommended amount
of R-134a, close Coupler
Valves by turning CCW.
Shut off engine and
A/C system.
CAREFULLY
disconnect R-134a
supply and Couplers
from A/C system;
hoses may contain
residual refrigerant.
4
CW
1
CCW
3
To discharge
HP port
CLOSE ALL VALVES:
Manifold Valves - turn CW.
Coupler Valves - turn CCW.