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Do not attempt to backseat this valve. Attempts to
backseat this valve will cause snap ring to explode
from valve body under pressure of refrigerant.
Personal injury and unit damage will result.
DANGER
3− Replace stem cap and tighten firmly. Tighten finger
tight, then tighten an additional 1/6 turn.
To Close Suction Line Service Valve:
1− Remove stem cap with an adjustable wrench.
2− Using service wrench and 5/16" hex head extension
(part #49A71) turn stem in clockwise to seat the valve.
Tighten firmly, but do not overtighten.
3−
Replace stem cap. Tighten finger tight, then tighten an
additional 1/6 turn.
3 − Suction Line (Ball Type) Service Valve
A balltype full service valve is used on the early model
HS26461 units. This valve is manufactured by Aeroquip. All
suction line service valves function the same way, differences
are in construction. Valves are not rebuildable. If a valve
has failed it must be replaced. A ball valve is illustrated
in figure 12.
The ball valve is equipped with a service port. A schrad
er valve is factory installed. A service port cap is sup
plied to protect the schrader valve from contamination
and assure a leak free seal.
SUCTION LINE (BALL TYPE) SERVICE VALVE
(VALVE OPEN)
FIGURE 12
SCHRADE
R VALVE
SERVICE PORT
SERVICE
PORT
CAP
STEM CAP
INLET
(FROM INDOOR COIL)
OUTLET
(TO
COMPRESSOR)
STEM
USE ADJUSTABLE WRENCH
ROTATE STEM CLOCKWISE 90
_
TO CLOSE
ROTATE STEM COUNTERCLOCKWISE 90
_
TO OPEN
BALL
(SHOWN OPEN)
C−Service Valves (Late Models)
The liquid line and suction line service valves and gauge
ports are accessible by removing the compressor access
cover. Full service liquid and suction line valves are used.
See figures13 and 14. The service ports are used for leak
testing, evacuating, charging and checking charge. Ser
vice valves have a factory installed schrader valve. A ser
vice port cap is supplied to protect the schrader valve from
contamination and assure a leak free seal. Valves are not
rebuildable. If a valve has failed it must be replaced.
SCHRADE
R
VALVE
SER
VICE
PORT
SERVICE
PORT
CAP
INSERT HEX
WRENCH HERE
INLET (TO
INDOOR COIL)
OUTLET (TO
COMPRESSOR)
STEM CAP
SCHRADER VALVE OPEN
TO LINE SET WHEN VALVE
IS CLOSED (FRONT
SEATED)
SERVICE
PORT
SERVICE
PORT CAP
RETAINING RING
STEM CAP
OUTLET (TO
COMPRESSOR)
INSERT HEX
WRENCH HERE
LIQUID/VAPOR LINE SERVICE
VALVE
(VALVE CLOSED)
(VALVE FRONT
SEATED)
INLET
(TO INDOOR COIL)
FIGURE 13
LIQUID LINE SERVICE VALVE ALL UNITS
VAPOR LINE SERVICE VALVE
−018, −024, −030, −036, −042, −048
(VALVE OPEN)
To Access Schrader Port:
1− Remove service port cap with an adjustable wrench.
2− Connect gauge to the service port.
3− When testing is completed, replace service port cap.
Tighten finger tight, then an additional 1/6 turn.
