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505328M 06/09
Operating Ball−Type Service Valve
To Access Ball−Type Service Port:
A service port cap protects the service port core from
contamination and serves as the primary leak seal.
1. Remove service port cap using an appropriately sized
wrench.
2. Connect gauge to the service port.
3. When testing is completed, replace service port cap and
tighten as follows:
S
With Torque Wrench
: Finger tighten and then
tighten per table table 1 on page 2.
S
Without Torque Wrench
: Finger tighten and use an
appropriately sized wrench to turn an additional
1/6 turn clockwise as illustrated in figure 1.
To Open and Close Ball−Type Service Valve:
A valve stem cap protects the valve stem from
contamination and assures a leak−free seal.
1. Remove stem cap with a wrench.
2. Use an adjustable wrench to open. To open valve,
rotate stem counterclockwise 90°. To close rotate
stem clockwise 90°.
3. Replace the stem cap and tighten as follows:
S
With Torque Wrench
: Finger tighten and then
tighten per table 1 on page 2.
S
Without Torque Wrench
: Finger tighten and use an
appropriately sized wrench to turn an additional
1/12 turn clockwise as illustrated in figure 1.
NOTE − A label with specific torque requirements may be
affixed to the stem cap. If the label is present, use the
specified valve listed.
Ball (Shown Closed)
Service Port
Core
T
O
INDOOR
UNIT
To outdoor unit
Use Adjustable Wrench
To open: rotate Stem Counter-Clock-
wise 90°.To close: rotate Stem clockwise 90°.
Service Port
Service Port
Cap
STEM CAP
Valve Stem
Open to line set when valve
is closed, to both line set
and unit when valve is open.
Figure 3. Ball−Type Service Valve
Recovering Refrigerant from Existing
HCFC−22 System
Remove existing HCFC−22 refrigerant using one of the
following methods:
METHOD 1:
If the existing outdoor unit is not equipped with shut−off
valves, or if the unit is not operational and you plan to use
the existing HCFC−22 or refrigerant to flush the system:
1. Disconnect all power to the existing outdoor unit.
2. Connect to the existing unit a gauge set, clean
recovery cylinder and a recovery machine. Use the
instructions provided with the recover machine on how
to setup the connections.
3. Remove all HCFC−22 refrigerant from the existing
system. Check gauges after shutdown to confirm that
the entire system is completely void of refrigerant.
4. Disconnect the liquid and vapor lines from the existing
outdoor unit.
5. Remove the existing outdoor unit.
NOTE − Use recovery machine instructions for specific
setup requirements.
Manifold Gauges
Recovery Machine
Clean Recovery Cylinder
Outdoor Unit
Figure 4. Typical Refrigerant Recovery (Method 1)
METHOD 2:
If the existing outdoor unit is equipped with manual shut−off
valves and you plan to use new HCFC−22
refrigerant to
flush the system −
1. Start the existing HCFC−22 system in the cooling
mode and close the liquid line valve.
2. Pump all of the existing HCFC−22 refrigerant back into
the outdoor unit.
NOTE − It may be necessary to bypass the low pressure
switches to ensure complete refrigerant evacuation.
