Carrier 17EX Checking Guide Vane Linkage Ð Refer to Fig, Contact Seal Maintenance Refer to Ð

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Refrigerant HFC-134a MUST NOT be mixed with air or oxygen and pressurized for leak testing. In general, this refrigerant should not be allowed to be present with high concentrations of air or oxygen above atmo- spheric pressures, because the mixture can undergo combustion.

REFRIGERANT TRACER Ð Use an environmentally ac- ceptable refrigerant as a tracer for leak test procedures.

TO PRESSURIZE WITH DRY NITROGEN Ð Another method of leak testing is to pressurize with nitrogen only and use a soap bubble solution or an ultrasonic leak detector to determine if leaks are present. This should only be done if all refrigerant has been evacuated from the vessel.

1.Connect a copper tube from the pressure regulator on the cylinder to the refrigerant charging valve. Never apply full cylinder pressure to the pressurizing line. Follow the listed sequence.

2.Open the charging valve fully.

3.Slowly open the cylinder regulating valve.

4.Observe the pressure gage on the chiller and close the regulating valve when the pressure reaches test level. Do not exceed 140 psi (965 kPa).

5.Close the charging valve on the chiller. Remove the cop- per tube if no longer required.

Repair the Leak, Retest, and Apply Standing Vacuum Test Ð After pressurizing the chiller, test for leaks with an electronic leak detector, soap bubble solution, or an ultrasonic leak detector. Bring the chiller back to at- mospheric pressure, repair any leaks found, and retest.

After retesting and ®nding no leaks, apply a standing vacuum test, and then dehydrate the chiller. Refer to the Standing Vacuum Test and Chiller Dehydration in the Before Initial Start-Up section, page 49.

Checking Guide Vane Linkage Ð Refer to Fig. 35.

If slack develops in the drive chain, eliminate backlash as follows:

1.With the chiller shut down (guide vanes closed), remove the chain guard, loosen the actuator holddown bolts, and remove the chain.

2.Loosen the vane sprocket set screw and rotate the sprocket wheel until the set screw clears the existing spotting hole.

3.With the set screw still loose, replace the chain, and move the vane actuator to the left until all the chain slack is taken up.

4.Tighten the actuator holddown bolts and retighten the set screw in the new position.

5.Realign the chain guard as required to clear the chain.

Contact Seal Maintenance (Refer to Fig. 36) Ð

During chiller operation, oil that lubricates the seal seeps through the space between the contact sleeve (Item 18) and the lock nut (Item 15). This oil slowly accumulates in an atmo- spheric oil chamber and is automatically returned to the sys- tem by a seal oil return pump.

Oil should never leak around the outer diameter of the contact sleeve (Item 18). If oil is found in this area, O-ring (Item 12) should be checked and replaced.

The oil passing through the shaft seal carries with it some absorbed refrigerant. As the oil reaches the atmosphere, the absorbed refrigerant is released from the oil as a vapor. For this reason, a detector will indicate the presence of a slight amount of refrigerant around the compressor shaft when- ever the chiller is running.

Fig. 35 Ð Electronic Vane Actuator Linkage

During shutdown, no refrigerant should be detected ex- cept for minute outgassing from residual oil in the seal area. There should be no oil seepage. If oil ¯ow or the presence of refrigerant is noted while the chiller is shut down, a seal defect is indicated. Arrange for a seal assembly inspection by a quali®ed serviceman to determine the cause of the leak- age and make the necessary repairs.

SEAL DISASSEMBLY (Fig. 36) Ð Contact seal disassem- bly and repair should be performed only by well quali®ed compressor maintenance personnel. These disassembly in- structions are included only as a convenient reference for the authorized serviceman.

For ease of disassembly, refer to Fig. 36 while following these instructions.

1.Remove refrigerant.

2.Remove compressor shaft coupling hub and coupling spacer (if any).

3.The snap ring (Item 16) used for seal assembly/disassembly is clipped over three screws (Item 41) on the windage baffle (Item 7). Remove the snap ring and put it aside for now.

4.Remove the screws holding the windage baffle and the shaft end labyrinth (Item 8).

5.Remove the contact sleeve key (Item 11).

6.Using a snap ring tool, install the snap ring (Item 16) in the groove on the end of the contact sleeve (Item 18), as shown in Fig. 36.

7.Remove the tubing between the coupling (Item 20) and the atmospheric oil chamber. Loosen the bolts (Item 6) holding the coupling guard mounting ring (Item 4) and the seal housing (Item 3). The spring contact sleeve (Item 17) will push the housing out until the snap ring (Item 16) contacts the seal housing (Item 3). To avoid binding, loosen the bolts in a circular pattern until the spring stops pushing out on the housing. Then, remove 2 bolts that are 180 degrees apart. Replace them with a 1/2-13 all-thread rod to support the housing while the rest of the bolts are removed.

8.Remove the rest of the bolts, and remove the seal housing.

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Contents Start-Up, Operation, and Maintenance Instructions Safety ConsiderationsContents Piping Check Relief Devices Inspect Wiring OCCPC01S Input Service CongurationsCoupling Maintenance Motor Maintenance Inspect Water PipingContents 17EX Chiller Familiarization IntroductionAbbreviations Performance CertifiedTypical 17EX Chiller Components OIL Cooling Cycle Lubrication CycleStarters Refrigeration, Cycle17EX Compressor Lubrication Cycle Controls DenitionsTemperature Sensors See Fig Pressure Transducers Major PIC Components Panel LocationsPIC Component Panel Location Processor Sensor Input/Output Module Control Center17EX Controls and Sensor Locations Psio LIDPIC Tewac Equip GND ÐGRD General LID Operation and Menus FigPROCESSOR/SENSOR INPUT/OUTPUT Module Psio LID Service Screen YES or no , on or OFF , etc. to select the desired state Override OperationsDefault Screen 17EX LID Menu StructureService Table Alarm HistoryEquipment Configuration Control TestCCN Carrier Comfort NetworkHgbp Ð Hot Gas Bypass LIDSetpoint ChwrChws HgbpDescription Range Units Reference Point Name Alarm History LID Display DataExample 1 Ð STATUS01 Display Screen Menu Status SelectMenu Status Example 2 Ð STATUS02 Display ScreenExample 3 Ð STATUS03 Display Screen Menu Example 4 Ð STATUS04 Display ScreenExample 5 Ð Setpoint Display Screen ICE Build Termination Example 6 Ð Configuration Config Display ScreenECW Control Option Example 7 Ð LEAD/LAG Configuration Display Screen LAG =2, Standby =3Example 8 Ð SERVICE1 Display Screen Example 9 Ð SERVICE2 Display Screen Spare Alert EnableExample 10 Ð SERVICE3 Display Screen Menu ServiceExample 11 Ð Maintenance MAINT01 Display Screen Example 12 Ð Maintenance MAINT02 Display ScreenDischarge Temperature Bearing TemperatureDescription RANGE/STATUS Units Reference Point Name Example 13 Ð Maintenance MAINT03 Display ScreenExample 14 Ð Maintenance MAINT04 Display Screen PIC System Functions Page Protective Safety Limits and Control Settings Capacity Overrides Page Page ECW Cent Capacity ICE Build Setpoint Example of Attach to Network Device Screen To Access the Service Screens Example of Holiday Period ScreenSTART-UP/SHUTDOWN Recycle Sequence FigPage Before Initial START-UP Job Data RequiredEquipment Required MotorPage 17EX Leak Test Procedures Ð HFC-134a Pressure Ð Temperature F Ð HFC-134a Pressure Ð Temperature CTemperature F Temperature CDehydration Cold Trap 900 500 901 7000 1000 7001-14500 2500 Inspect WiringCheck Optional Pumpout Compressor Water Pip External Gear Pre-Start Checks Recommended Motor Fastener Tightening TorquesExternal Gear Lubrication System SOLID-STATE Starters Check StarterMechanical Starters Input the Local Occupied Schedule OCCPC01S Set Up Chiller Control CongurationInput the Design Set Points Ð To modify the set T1/P1 Full Load Points T2/P2 Change the LID Configuration if NecessarySurge Limiting or 50% Load Surge Prevention Occurs TOO Soon Occurs TOO LateIncrease P1 by Decrease P1 by Charge Refrigerant into Chiller Initial START-UPControl Test Menu Functions Tests to be Devices Tested PerformedInitial Motor START-UP Dry Run to Test Start-Up SequenceCheck Motor Rotation Page Flange Nut Tightening Torques Low Speed Couplings Only Calibrate Motor Current Demand Setting Check Oil Pressure and Compressor StopTo Prevent Accidental Start-Up Ð The PIC can be General RecommendationsOperating Instructions Operator DutiesStarting the Chiller Stopping the ChillerPumpout and Refrigerant Transfer Procedures Operating the Optional Pumpout CompressorPlant Chiller Serial No Chiller Model No Refrigerant Type Rear View RLA Valve ConditionGeneral Maintenance Return Chiller to Normal Operating ConditionsContact Seal Maintenance Refer to Ð Checking Guide Vane Linkage Ð Refer to FigContact Seal Page Chiller Alignment Checking Preliminary AlignmentMeasuring Angular Misalignment Elevation Alignment Formula Adjusting Angular Misalignment in Plan HOT Alignment CheckCorrecting Parallel Misalignment DowelingWeekly Maintenance Scheduled MaintenanceCheck Safety and Operating Controls Monthly Changing the Oil FiltersPumpout Compressor OIL17EX Chiller Oil Specications Typical Float Valve Arrangement Sleeve Bearings Page Motor Riggings Inspect the Heat Exchanger Tubes Troubleshooting Guide Controls for Optional Pumpout CompressorPage MAINT01 MAINT02MAINT03 MAINT041CR AUX OilpdOilt PICStarts Limit Exceeded Autorestart in ProgressFault OperationPotential FREEZE-UP Failure to StopRunning Ð Temp Control Running Ð Demand LimitedChiller Protect Limit Faults Sensor Fault Alert LOW OIL PressureAlert Autorestart PendingDESCRIPTION/MALFUNCTION Probable CAUSE/REMEDY External Gear Troubleshooting Guide ProblemPossible Cause Ð Item NO.s Possible Cause ActionÐ Thermistor Temperature F vs Resistance/Voltage Drop Temperature Voltage Resistance DropÐ Thermistor Temperature C vs Resistance/Voltage Drop Temperature Voltage Resistance DropModule Switch Control ModulesModule Address Input Options ModuleGRD Processor/Sensor Input/Output Module Psio FigStarter Management Module SMM Fig Installation of NEW Psio Module Switch Setting Options ModuleFour-In/Two-Out Module Fig Options ModulePhysical Data and Wiring Schematics 4-In/2-Out ModuleAdditional Cooler Weights Weight Vessel SIZE²Condenser Total Weight Condenser Charge 100Additional Condenser Weights Compressor Weight and Elbow WeightDrive Component Weights 101102 Ð Total Motor Weight, English lbÐ Total Motor Weight, SI kg Marine Waterbox Cover Weights NIH Waterbox Cover WeightsApproximate Refrigerant HCFC-134a Charge 103104 Auxiliary Systems, Electrical DataRelief Valve Locations and Data Compressor Fits and Clearances 105Measure 106Clearance Type Description 17FX Tabulation Ð Impeller Clearances Open-Drive Compressors107 108 109 TempPress Tewac110 111 112 113 General114 GND Ð GroundT1-T4 Terminal StripIndex Index Index Index Index Copyright 1997 Carrier Corporation

17EX specifications

The Carrier 17EX is recognized as an innovative air conditioning solution that combines efficiency with advanced technology. This model is designed to meet the increasing demands of residential and commercial cooling needs while maintaining environmental consciousness.

One of the standout features of the Carrier 17EX is its impressive Seasonal Energy Efficiency Ratio (SEER) rating. With a SEER rating that often exceeds 17, this unit ensures optimized energy consumption, significantly lowering operational costs for users. The incorporation of advanced compressor technology allows the system to adjust its cooling output based on the specific needs of the environment, thus providing both comfort and energy savings.

The Carrier 17EX utilizes a variable-speed inverter-driven compressor that enhances its performance and adaptability. This technology allows the air conditioning unit to operate at different speeds, intelligently adjusting to changing load conditions. As a result, the system runs more efficiently and quietly, providing a more consistent comfort level without the abrupt temperature swings associated with traditional units.

In addition to efficiency, the Carrier 17EX also prioritizes reliability and durability. The unit comes with a robust cabinet that protects the components from weather elements, ensuring longevity and consistent performance. The innovative design integrates a corrosion-resistant finish and robust insulation, which further enhances the unit's resilience in various environmental conditions.

For users concerned about indoor air quality, the Carrier 17EX includes advanced filtration systems designed to capture allergens and airborne particles. This feature is particularly beneficial for individuals with respiratory issues, ensuring that the air circulated within the space is clean and healthy.

Moreover, the Carrier 17EX is equipped with smart technology capabilities, allowing users to control their systems remotely through smartphones or other smart devices. This connectivity not only provides convenience but also empowers homeowners to optimize their energy use by adjusting settings on the fly, ensuring efficient operation even when they are away from home.

Overall, the Carrier 17EX stands out in the marketplace for its exceptional energy efficiency, advanced technology, and commitment to providing reliable and effective cooling solutions. Its combination of modern features makes it a preferred choice for those looking to enhance comfort while being mindful of energy consumption and environmental impact.
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