WARNING
To prevent SERIOUS INJURY and DEATH:
1. Wear ANSI-approved safety goggles and
heavy-duty work gloves during setup and use.
2. DO NOT OPEN either Manifold Valve (11) un-
less directed to do so; otherwise, refrigerant
leaks, A/C system contamination, and hazardous
expulsion of pressurized refrigerant may occur.
3. Use in well-ventilated area only.
4. Keep gauge and hoses away from moving
engine parts.
5. Turn off vehicle’s engine and A/C system
before attaching gauge.
6. The following procedure is to be per-
formed only by a technician certified in re-
frigerant recovery and recycling procedures,
as explained previously.
DIAGNOSTIC CHECK
1. Close both Manifold Valves (11) by turning
CW. Close both Coupler Valves (22, 23) by
turning CCW.
2. CONNECT HOSES:
a. Connect one end of the Blue Hose
(19) to the Blue LP Hose Connector and
the other end to the Blue Coupler (23).
b. Connect one end of the Red Hose (17)
to the Red LP Hose Connector and the
other end to the Red Coupler (22).
c. Connect one end of the Yellow Hose
(18) to the Yellow Charge Hose Connec
tor (16) and the other end to the Charge
Valve on that Connector.
3. ATTACH COUPLERS:
a. Attach the Blue Coupler (22) to the
suction LP port on the A/C system.
b. Attach the Red Coupler (23) to the
discharge HP port on the A/C system.
4. PERFORM CHECK:
a. To do a dynamic check: Turn on the
vehicle and allow it to reach normal
operating temperature. Then, turn on the
A/C system.
b. Open both Coupler Valves (22, 23) by
turning CW.
c. Read the pressure on both of the
Gauges (3, 5) and compare to the
manufacturer’s recommended readings.
5. AFTER:
a. Close both Coupler Valves (22, 23)
by turning CCW.
b. Turn off the vehicle and the A/C
system if dynamic check was done.
c.
Carefully disconnect the Couplers
(22, 23), the hoses may contain residual refrig-
erant. Pull back the knurled ring on each Coupler
(22, 23) and store it on its Coupler Storage Plug
(6, 7).
CW
KEEP
CLOSED
KEEP
CLOSED
CW
CW
CW
RED
BLUE
YELLOW
To charge
valve
To discharge
HP port
To suction
LP port
