Sanyo PNR-XS2432 Basic Function of the Service Valves, Action, Valve 2-Way Valve 3-Way, Pump Down

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9-3. Basic Function of the Service Valves

The basic function of the service valves are given in Table 7 below.

Action

Narrow Tube Service

Wide Tube Service

Valve (2-Way)

Valve (3-Way)

 

 

 

O-ring

Valve cap

 

 

 

Stem

Shipping

 

 

 

 

1826_M_I

 

1827_M_I

Operating and

 

 

 

test running the

 

 

 

air conditioner

 

 

 

 

1828_M_I

 

1829_M_I

 

 

 

Measuring

 

 

pressure

 

 

 

and gas charging

 

 

 

 

1830_M_I

 

1831_M_I

Air purging with a

 

 

 

 

 

vacuum pump

 

 

 

1832_M_I

1833_M_I

The service port on the wide tube service

Service valve

valve uses a Schrader core valve to access

Hose with push-pin

the refrigerant system. Therefore, be sure to

 

use a hose connector which has a push-pin

 

inside. (Fig. 9-3)

 

 

PUSH

1834_M_I

Fig. 9-3

9-4. Pump Down

Pump down means collecting all refrigerant gas in the system back into the outdoor unit without losing any of the gas. Pump down is used when the unit is to be moved or before servicing the refrigerant circuit

Pump Down Procedure

Be sure to carry out pump down with the unit in cooling mode.

(1)Connect the Lo side charging hose of the manifold valve to the service port on the wide tube service valve.

(2)Using a hex wrench, turn the narrow tube service

valve clockwise all the way to close the service valve. (Be sure to confirm that the wide tube service valve is fully open.)

(3)Press the operation button and start cooling operation.

(4)When the low pressure gauge reading falls to 1 to 0.5 kg/cm2 (14.2 to 7.1 PSI), fully close the wide tube valve stem with a standard screwdriver. Then quickly stop the unit.

(5)Disconnect all gauges and hose, and replace the bonnets and the valve caps as they were before.

27S4359128

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Contents Installation Instructions Please Read Before Starting General Models C1852 Tubing Data CL1852 Tubing LengthIndoor Unit Selecting the Installation SiteOutdoor Unit Provide a solid base level concrete pad, concreteBaffle Plates for the Outdoor Unit CL⋅⋅ models only Unit inch mm How to Install the Indoor UnitSuspending the Indoor Unit Preparation for SuspendingPlacing the Unit Inside the Ceiling Backwards and leak when the unit is Installing the Drain PipingDo not install an air Do not install the pipe with an upwardDrainage Start turning when checkingChecking the Drainage Be careful since the fan willLatch Screw Air intake grille Ceiling panel When Removing the Ceiling Panel for Servicing Installing the Ceiling PanelDuct for Fresh Air Setup for the indoor unitTake adequate precautions Caution when installing onto Installing the AIR-INTAKE ChamberInstalling the Duct Connection BOX Installing the Indoor UnitMounting on a Wall Removable mountingNon-removable mounting Installing the Wired Remote Control Unit Wired Remote Control Unit OptionRemote Control Indoor Unit Unit No Address switch Address SwitchesFinding the Address Switches Remote Control Unit Switch Positions for 2 Units or 2 Groups of UnitsModels Electrical WiringGeneral Precautions on Wiring Wiring Instructions for the Outdoor UnitIndoor Indoor Unit Outdoor Unit ProblemScrewdriver. Fig For stranded wiringUse of the Flaring Method How to Process TubingFlaring Procedure with a Flare Tool Precaution before Connecting Tubes TightlyTaping the flare nuts Precautions during BrazingConnecting Tubing between Indoor and Outdoor Units Refrigerant tubingTaping the Tubes Finishing the Installation10 min. or more 15 min. or more Air PurgingHex wrench before Be sure to completely insertPerforming Test Run with Optional Wired Remote Control Unit Test RunPerforming Test Run Be careful since the fan will Pump Down Basic Function of the Service ValvesAction Valve 2-Way Valve 3-Way
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PNR-XS2432, XS1852 specifications

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