Carrier 17EX specifications Pumpout and Refrigerant Transfer Procedures

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NOTE: If the chiller fails to stop, in addition to action that the PIC initiates, the operator should close the guide vanes by overriding the guide vane target to zero (to reduce chiller load) and then by opening the main disconnect. Do not at- tempt to stop the chiller by opening an isolating knife switch. High intensity arcing may occur. Do not restart the chiller until the problem is diagnosed and corrected.

After Limited Shutdown Ð No special preparations should be necessary. Follow the regular preliminary checks and starting procedures. Control power must be maintained in order to keep the oil temperature hot and all control safe- ties operational. The oil pump operates occasionally to keep the contact seal ®lled with oil to prevent refrigerant loss.

Extended Shutdown Ð The refrigerant should be trans- ferred into the economizer/storage vessel (see Pumpout and Refrigerant Transfer Procedures, this page) in order to re- duce chiller pressure and the possibility of leaks. Maintain a holding charge of 5 to 10 lbs (2.27 to 4.5 kg) of refrigerant within the cooler/condenser/compressor sections, to prevent air from leaking into the chiller.

If freezing temperatures are likely to occur in the chiller area, drain the chilled water, condenser water, and the pump- out condenser water circuits to avoid freeze-up. Keep the waterbox drains open.

Leave the oil charge in the chiller with the oil heater and controls energized to maintain the minimum oil reservoir temperature.

After Extended Shutdown Ð Be sure that the water system drains are closed. It may be advisable to ¯ush the water circuits to remove any soft rust which may have formed. This is a good time to brush the tubes if necessary.

Check the cooler pressure on the LID default screen, and compare it to the original holding charge that was left in the chiller. If (after adjusting for ambient temperature changes) any loss in pressure is indicated, check for refrigerant leaks. See the Check Chiller Tightness section, page 46.

Recharge the chiller by transferring refrigerant from the economizer/storage vessel. Follow the Pumpout and Re- frigerant Transfer Procedures section, this page. Observe freeze-up precautions.

Carefully make all regular preliminary and running sys- tem checks. Perform a controls test before start-up. If the compressor oil level appears abnormally high, the oil may have absorbed refrigerant. Make sure that the oil tempera- ture is above 150 F (66 C) or above the cooler refrigerant temperature plus 70° F (39° C).

Cold Weather Operation Ð When the entering con- denser water temperature is very low, the PIC can automati- cally cycle the cooling tower fans off to keep the tempera- ture up. Provide a way to control the condenser water temperature to the chiller either by arranging a tower bypass piping system and/or adding a tower water temperature con- trol system.

Manual Guide Vane Operation Ð It is possible to operate the guide vane manually in order to check control operations or control the guide vanes in an emergency. This is done by overriding the target guide vane position. Access the STATUS01 screen on the LID and highlight TARGET GUIDE VANE POS. To control the position, enter the de- sired percentage of guide vane opening. Zero percent is fully

closed; 100% is fully open. To release the guide vanes to

automatic operation, press the RELEASE softkey.

NOTE: Manual guide vane control allows the operator to manipulate the guide vane position and override the pull- down rate during start-up. However, motor current above the electrical demand setting, capacity overrides, and chilled wa- ter temperature below the control point will override manual

guide vane control and close the guide vanes, if necessary. For descriptions of capacity overrides and set points, see the Controls section.

Refrigeration Log Ð A refrigeration log, such as the one shown in Fig. 31, is a convenient way to track routine inspection and maintenance and provides a continuous record of chiller performance. It is an aid in scheduling routine main- tenance and in diagnosing chiller problems.

Keep a record of the chiller pressures, temperatures, and liquid levels on a log similar to Fig. 31. It is possible to au- tomatically record PIC data by using CCN devices such as the Data Collection module and a Building Supervisor ter- minal. Contact your Carrier representative for more information.

PUMPOUT AND REFRIGERANT TRANSFER

PROCEDURES

Preparation Ð The 17EX may come equipped with an optional pumpout compressor. The refrigerant can be pumped for service work to either the cooler/condenser/compressor sections or the economizer/storage vessel by using the pump- out system. The following procedures describe how to trans- fer refrigerant from vessel to vessel and perform chiller evacuations.

To prevent tube freeze-up, always be sure that the con- denser and cooler water pumps are operating whenever charging, transferring, or removing refrigerant from the chiller.

If the chiller water pumps are controlled by the PIC, ac- cess the CONTROL TEST table on the LID and use the PUMPDOWN/LOCKOUT screen or TERMINATE LOCK- OUT screen to perform the functions described below. If the chiller water pumps are not controlled by the PIC, they must be turned on and off manually.

When performing pumpout, do not leave the compres- sor unattended for long periods of time or loss of com- pressor oil may result. Periodically check oil level.

Operating the Optional Pumpout Compressor

1.Be sure that the suction and the discharge service valves on the optional pumpout compressor are open (back seated) during operation. Figure 32 shows the location of these valves (valves 2, 3, 4, 5, and 8). Rotate the valve stem fully counterclockwise to open. Front seating the valve closes the refrigerant line and opens the gage port to com- pressor pressure.

2.Make sure that the compressor holddown bolts have been loosened to allow free spring travel.

3.Open the refrigerant inlet valve on the pumpout compressor.

4.Oil should be visible in the compressor sight glass under all operating conditions and during shutdown. If oil is low, add oil as described under Pumpout System Main- tenance section, page 83. The pumpout unit control wir- ing schematic is detailed in Fig. 33. The Optional Pump- out System is detailed in Fig. 34.

READING REFRIGERANT PRESSURES during pumpout or leak testing:

1.The LID display on the chiller control center is suitable for determining refrigerant-side pressures and low (soft) vacuum. To measure evacuation or dehydration pres- sures, use a quality vacuum indicator or manometer to ensure the desired range and accuracy. This can be placed on the Schrader connections on each vessel by removing the pressure transducer.

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Contents Safety Considerations Start-Up, Operation, and Maintenance InstructionsContents Inspect Water Piping Piping Check Relief Devices Inspect WiringOCCPC01S Input Service Congurations Coupling Maintenance Motor MaintenanceContents Introduction Abbreviations17EX Chiller Familiarization Certified PerformanceTypical 17EX Chiller Components Lubrication Cycle OIL Cooling CycleRefrigeration, Cycle Starters17EX Compressor Lubrication Cycle Denitions ControlsProcessor Sensor Input/Output Module Control Center Temperature Sensors See Fig Pressure TransducersMajor PIC Components Panel Locations PIC Component Panel Location17EX Controls and Sensor Locations LID PICPsio Equip GND Ð GRDTewac LID Operation and Menus Fig PROCESSOR/SENSOR INPUT/OUTPUT Module PsioGeneral LID Service Screen Override Operations YES or no , on or OFF , etc. to select the desired state17EX LID Menu Structure Default ScreenControl Test Service TableAlarm History Equipment ConfigurationLID CCNCarrier Comfort Network Hgbp Ð Hot Gas BypassHgbp SetpointChwr ChwsMenu Status Select Description Range Units Reference Point Name Alarm HistoryLID Display Data Example 1 Ð STATUS01 Display ScreenExample 2 Ð STATUS02 Display Screen Example 3 Ð STATUS03 Display ScreenMenu Status Example 4 Ð STATUS04 Display Screen Example 5 Ð Setpoint Display ScreenMenu Example 6 Ð Configuration Config Display Screen ECW Control OptionICE Build Termination LAG =2, Standby =3 Example 7 Ð LEAD/LAG Configuration Display ScreenExample 8 Ð SERVICE1 Display Screen Menu Service Example 9 Ð SERVICE2 Display ScreenSpare Alert Enable Example 10 Ð SERVICE3 Display ScreenBearing Temperature Example 11 Ð Maintenance MAINT01 Display ScreenExample 12 Ð Maintenance MAINT02 Display Screen Discharge TemperatureExample 13 Ð Maintenance MAINT03 Display Screen Example 14 Ð Maintenance MAINT04 Display ScreenDescription RANGE/STATUS Units Reference Point Name 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 Example of Holiday Period Screen To Access the Service ScreensRecycle Sequence Fig START-UP/SHUTDOWNPage Motor Before Initial START-UPJob Data Required Equipment RequiredPage 17EX Leak Test Procedures Temperature C Ð HFC-134a Pressure Ð Temperature FÐ HFC-134a Pressure Ð Temperature C Temperature FDehydration Cold Trap Inspect Wiring Check Optional Pumpout Compressor Water Pip900 500 901 7000 1000 7001-14500 2500 Recommended Motor Fastener Tightening Torques External Gear Pre-Start ChecksExternal Gear Lubrication System Check Starter Mechanical StartersSOLID-STATE Starters Set Up Chiller Control Conguration Input the Design Set Points Ð To modify the setInput the Local Occupied Schedule OCCPC01S Change the LID Configuration if Necessary Surge Limiting orT1/P1 Full Load Points T2/P2 Load Surge Prevention Occurs TOO Soon Occurs TOO Late Increase P1 by Decrease P1 by50% Tests to be Devices Tested Performed Charge Refrigerant into ChillerInitial START-UP Control Test Menu FunctionsDry Run to Test Start-Up Sequence Check Motor RotationInitial Motor START-UP Page Flange Nut Tightening Torques Low Speed Couplings Only General Recommendations Calibrate Motor Current Demand SettingCheck Oil Pressure and Compressor Stop To Prevent Accidental Start-Up Ð The PIC can beStopping the Chiller Operating InstructionsOperator Duties Starting the ChillerOperating the Optional Pumpout Compressor Pumpout and Refrigerant Transfer ProceduresPlant Chiller Serial No Chiller Model No Refrigerant Type Rear View Valve Condition RLAReturn Chiller to Normal Operating Conditions General MaintenanceChecking Guide Vane Linkage Ð Refer to Fig Contact Seal Maintenance Refer to ÐContact Seal Page Checking Preliminary Alignment Chiller AlignmentMeasuring Angular Misalignment Elevation Alignment Formula HOT Alignment Check Adjusting Angular Misalignment in PlanDoweling Correcting Parallel MisalignmentChanging the Oil Filters Weekly MaintenanceScheduled Maintenance Check Safety and Operating Controls MonthlyCompressor OIL 17EX Chiller Oil SpecicationsPumpout Typical Float Valve Arrangement Sleeve Bearings Page Motor Riggings Inspect the Heat Exchanger Tubes Controls for Optional Pumpout Compressor Troubleshooting GuidePage MAINT04 MAINT01MAINT02 MAINT03PIC 1CR AUXOilpd OiltAutorestart in Progress Starts Limit ExceededFailure to Stop FaultOperation Potential FREEZE-UPRunning Ð Demand Limited Running Ð Temp ControlChiller Protect Limit Faults Autorestart Pending Sensor Fault AlertLOW OIL Pressure AlertDESCRIPTION/MALFUNCTION Probable CAUSE/REMEDY Possible Cause Action External Gear Troubleshooting GuideProblem Possible Cause Ð Item NO.sTemperature Voltage Resistance Drop Ð Thermistor Temperature F vs Resistance/Voltage DropTemperature Voltage Resistance Drop Ð Thermistor Temperature C vs Resistance/Voltage DropInput Options Module Module SwitchControl Modules Module AddressProcessor/Sensor Input/Output Module Psio Fig Starter Management Module SMM FigGRD Options Module Installation of NEW Psio ModuleSwitch Setting Options Module Four-In/Two-Out Module Fig4-In/2-Out Module Physical Data and Wiring Schematics100 Additional Cooler WeightsWeight Vessel SIZE² Condenser Total Weight Condenser Charge101 Additional Condenser WeightsCompressor Weight and Elbow Weight Drive Component WeightsÐ Total Motor Weight, English lb Ð Total Motor Weight, SI kg102 103 Marine Waterbox Cover WeightsNIH Waterbox Cover Weights Approximate Refrigerant HCFC-134a ChargeAuxiliary Systems, Electrical Data Relief Valve Locations and Data104 105 Compressor Fits and Clearances106 Clearance Type DescriptionMeasure Tabulation Ð Impeller Clearances Open-Drive Compressors 10717FX 108 Tewac 109Temp Press110 111 112 General 113Terminal Strip 114GND Ð Ground T1-T4Index 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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