Carrier 17EX External Gear Troubleshooting Guide, Problem, Possible Cause Ð Item NO.s

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Table 13 Ð External Gear Troubleshooting Guide

 

 

PROBLEM

 

POSSIBLE CAUSE Ð ITEM NO.s*

 

 

Excessive Operating Temperature

 

1,2,3,4,5,6,7,9,12,18,20,21

 

 

 

Oil Leakage

 

1,2,3,4,5,7,9,12,13,18,19,21

 

 

 

Gear Wear

 

1,2,3,4,6,7,8,9,10,11,12,13,14,15,16,18,19,21,22

 

 

 

Bearing Failure

 

1,6,7,8,9,10,11,12,15,16,19,20,21

 

 

 

Unusual Noise

 

1,2,3,4,6,7,8,9,10,11,12,13,15,16,17,20,21

 

 

*See table below for probable cause and suggested remedy.

 

 

 

 

 

 

 

 

 

 

 

 

POSSIBLE CAUSE

 

 

ACTION

 

1.

Unit Overload

 

Reduce the loading.

 

 

2.

Incorrect Oil Level

 

Verify that the oil level is correct. Too little or too much oil can cause high

 

 

 

 

 

temperature.

 

3.

Wrong Oil Grade

 

Use only the AGMA (American Gear Manufacturers Association) grade oil

 

 

 

 

 

as speci®ed for the unit size and ambient temperature.

 

4.

Contaminated Oil

 

If oil is oxidized, dirty, or has high sludge content, change the oil.

 

 

5.

Clogged Breather

 

Clean breather regularly.

 

 

6.

Improper Bearing Clearance

 

Too large or too small bearing clearance. Refer to drawing or contact the

 

 

 

 

 

gear manufacturer for correct clearance, checking technique, and toler-

 

 

 

 

ance. Shafts should turn freely when disconnected from the load.

 

7.

Improper Coupling Alignment

 

Disconnect couplings, check spacing between shafts, and check alignment.

 

 

 

 

 

Realign as required.

 

8.

Incorrect Coupling

 

Rigid couplings can cause shaft failure. Replace with a coupling that pro-

 

 

 

 

 

vides ¯exibility and lateral ¯oat.

 

9.

Excessive Operating Speed

 

Reduce the speed.

 

 

10.

Torsional or Lateral Vibrations

 

Vibrations can occur through a particular speed range known as the critical

 

 

 

 

 

speed. Contact the factory for speci®c recommendations.

 

11. Extreme Repetitive Shocks

 

Apply couplings capable of absorbing shocks.

 

 

12.

Improper Lubrication of Bearings

 

Verify that all bearings are receiving adequate amounts of lubricating oil.

 

 

13.

Improper Storage or Prolonged Shutdown

 

Destructive rusting of bearings and gears will be caused by storage or pro-

 

 

 

 

 

longed shutdown in moist ambient temperatures. If rust is found, unit must

 

 

 

 

be disassembled, inspected, and repaired.

 

14.

Excessive Backlash

 

Contact gear manufacturer.

 

 

15.

Misalignment of Gears

 

Contact pattern to be a minimum of 80% of face.

 

 

16.

Housing Twisted or Distorted

 

Verify proper shimming or stiffness of the foundation.

 

 

17.

Gear Tooth Wear

 

Contact gear manufacturer.

 

 

18.

Open Drains

 

Tighten drain plugs.

 

 

19.

Loosely Bolted Covers

 

Check all bolted joints and tighten if necessary.

 

 

20.

Motor Related

 

Verify that actual operating conditions are consistent with motor nameplate.

 

 

21.

Excessive Ambient Temperature

 

Shield unit from heat source and maintain proper air ¯ow around the gear

 

 

 

 

 

unit.

 

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Contents Safety Considerations Start-Up, Operation, and Maintenance InstructionsContents OCCPC01S Input Service Congurations Piping Check Relief Devices Inspect WiringCoupling Maintenance Motor Maintenance Inspect Water PipingContents Introduction Abbreviations17EX Chiller Familiarization Certified PerformanceTypical 17EX Chiller Components Lubrication Cycle OIL Cooling CycleRefrigeration, Cycle Starters17EX Compressor Lubrication Cycle Denitions ControlsMajor PIC Components Panel Locations Temperature Sensors See Fig Pressure TransducersPIC Component Panel Location Processor Sensor Input/Output Module Control Center17EX 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 ScreenAlarm History Service TableEquipment Configuration Control TestCarrier Comfort Network CCNHgbp Ð Hot Gas Bypass LIDChwr SetpointChws HgbpLID Display Data Description Range Units Reference Point Name Alarm HistoryExample 1 Ð STATUS01 Display Screen Menu Status SelectExample 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 Spare Alert Enable Example 9 Ð SERVICE2 Display ScreenExample 10 Ð SERVICE3 Display Screen Menu ServiceExample 12 Ð Maintenance MAINT02 Display Screen Example 11 Ð Maintenance MAINT01 Display ScreenDischarge Temperature Bearing 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 Job Data Required Before Initial START-UPEquipment Required MotorPage 17EX Leak Test Procedures Ð HFC-134a Pressure Ð Temperature C Ð HFC-134a Pressure Ð Temperature FTemperature F Temperature CDehydration 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% Initial START-UP Charge Refrigerant into ChillerControl Test Menu Functions Tests to be Devices Tested PerformedDry Run to Test Start-Up Sequence Check Motor RotationInitial Motor START-UP Page Flange Nut Tightening Torques Low Speed Couplings Only Check Oil Pressure and Compressor Stop Calibrate Motor Current Demand SettingTo Prevent Accidental Start-Up Ð The PIC can be General RecommendationsOperator Duties Operating InstructionsStarting the Chiller Stopping 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 MisalignmentScheduled Maintenance Weekly MaintenanceCheck Safety and Operating Controls Monthly Changing the Oil FiltersCompressor 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 MAINT02 MAINT01MAINT03 MAINT04Oilpd 1CR AUXOilt PICAutorestart in Progress Starts Limit ExceededOperation FaultPotential FREEZE-UP Failure to StopRunning Ð Demand Limited Running Ð Temp ControlChiller Protect Limit Faults LOW OIL Pressure Sensor Fault AlertAlert Autorestart PendingDESCRIPTION/MALFUNCTION Probable CAUSE/REMEDY Problem External Gear Troubleshooting GuidePossible Cause Ð Item NO.s Possible Cause ActionTemperature Voltage Resistance Drop Ð Thermistor Temperature F vs Resistance/Voltage DropTemperature Voltage Resistance Drop Ð Thermistor Temperature C vs Resistance/Voltage DropControl Modules Module SwitchModule Address Input Options ModuleProcessor/Sensor Input/Output Module Psio Fig Starter Management Module SMM FigGRD Switch Setting Options Module Installation of NEW Psio ModuleFour-In/Two-Out Module Fig Options Module4-In/2-Out Module Physical Data and Wiring SchematicsWeight Vessel SIZE² Additional Cooler WeightsCondenser Total Weight Condenser Charge 100Compressor Weight and Elbow Weight Additional Condenser WeightsDrive Component Weights 101Ð Total Motor Weight, English lb Ð Total Motor Weight, SI kg102 NIH Waterbox Cover Weights Marine Waterbox Cover WeightsApproximate Refrigerant HCFC-134a Charge 103Auxiliary 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 Temp 109Press Tewac110 111 112 General 113GND Ð Ground 114T1-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.

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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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