Trane RT-SVX10C-EN Scroll Compressor Replacement, Suction Line Filter/Drier Installation

Page 107

Service & Maintenance (Continued)

Figure 5-1

Belt Tension Measurement and Deflection Ranges

 

 

 

Deflection Force (Lbs.)

 

 

 

 

 

 

 

 

 

Super

 

 

 

 

 

 

Steel Cable

Belts

 

 

Gripbelts

 

Gripnotch

 

Gripbelts

 

Cross

Small P.D

 

 

 

 

 

 

 

 

 

 

 

Section

Range

Min.

Max.

Min.

Max.

Min.

Max

A

3.0 -3.6

3

4

1/2

3

7/8

5

1/2

3

1/4

 

4

3.8

- 4.8

3 1/2

 

5

4

1/2

6

1/4

3

3/4

4

3/4

 

5.0

- 7.0

4

5

1/2

 

5

6

7/8

4

1/4

5

1/4

B

3.4

- 4.2

4

5

1/2

5

3/4

 

8

4

1/2

5

1/2

4.4

- 5.6

5 1/8

7

1/8

6

1/2

9

1/8

5

3/4

7

1/4

 

5.8

- 8.8

6 3/8

8

3/4

7

3/8

10 1/8

 

7

8

3/4

 

 

 

Deflection Force (Lbs.)

 

 

 

 

 

 

 

 

 

358

 

 

358 Gripnotch

 

 

 

 

Belt

 

 

Gripbelts

 

Belts

 

 

 

 

 

 

Cross

Small P.D

 

 

 

 

 

 

 

 

 

 

 

Section

Range

Min.

Max.

Min.

Max.

 

 

 

 

5V

4.4

- 8.7

------

------

10

15

 

 

 

 

7.1 - 10.9

10 1/2

15 3/4

12 7/8

18 3/4

 

 

 

 

 

11.8

- 16.0

13

19 1/2

15

22

 

 

 

 

Scroll Compressor Replacement

The compressor manifold system was purposely designed to provide proper oil return to each compressors. The refrig- erant manifold system must not be modified in any way.

Note: Altering the compressor manifold piping may cause oil return problems and compressor failure.

Should a compressor replacement become necessary and a suction line filter drier is to be installed, install it a mini- mum of 18 inches upstream of the oil separator tee. See Figure 5-2.

Anytime a compressor is replaced, the oil for each com- pressor within the manifolded set must be replaced.

The scroll compressor uses Trane OIL-42 without substitu- tion. The appropriate oil charge for a 9 and 10 Ton scroll compressor is 8.5 pints. For a 14 and 15 Ton scroll com- pressor, use 13.8 pints.

Note: Do Not release refrigerant to the atmosphere! If adding or removing refrigerant is required, the service technician must comply with all Federal, State and local laws. Refer to general service bulletin MSCU-SB-1 (latest edition).

Figure 5-2

Suction Line Filter/Drier Installation

TOP VIEW

Compressor Bracket

Do Not Remove

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Common Suction Line from Evaporator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Minimum 18" straight unobstructed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30 Ton Compressor Pair Illustrated

 

 

 

 

 

 

 

 

piping between the Suction Filter/Drier

 

 

 

 

 

 

 

 

and the first Oil Separator Tee.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Oil Separator Tee

 

 

 

 

 

 

 

 

 

105

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Image 107
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Contents With 3-DTMScroll Compressors ModelsLater Design Sequence Overview of Manual Literature Change HistoryTable of Contents Model Number Description General InformationDigit 3 Unit Airflow Unit Description Fiberglass WoolHazard Identification General Information Commonly Used AcronymsSupply AIR General InformationCFM Ventilation Control Module VCM Design special option onlyLead-Lag Constant Volume CV Units Unit Component Layout and Shipwith Locations Variable Air Volume VAV UnitsGeneral Information Space Temperature Averaging Control Module Locations for SHF 40, 60, 70 & 75 Ton Units Table of Contents Storage Unit Dimensions & Weight InformationNo Step Surface Unit Inspection As soon as the unit arrives at the job sitePage Sahf Cooling-Only Units 20 thru 75 Ton Electrical Entrance Data Unit Dimensions InstallationUnit Dimensional Data Dimensions Size Unit Base Dimensional Data DimensionsSEHF, SFHF, SLHF, SSHF, Sxhf Units 20 thru 75 Ton Unit Size Furnace Dimensions Note Size/MBH Length Height Unit Base Dimensional Data Dimensions SizeUnit Dimensions Size Electrical Entrance Data Unit Dimensions SizeSHG Cooling & Heating Units 90 through 130 Ton Sshf SahfSehf SlhfSahf Sshf Sfhf Sxhf Sehg Sfhg Sxhg HF/G Roof Curb and DuctworkSE,SL Pitch Pocket Location Installation Unit Rigging & PlacementIf a Trane Curb Accessory Kit is not used Heavy ObjectsTypical Unit Rigging Unit Base & Roof Curb Section Requirements for Electric Heat Units Main Electrical Power RequirementsInstallation Field Installed Control Wiring General Unit RequirementsInstallation Condensate Drain Connections Page Removing Supply and Exhaust Fan Shipping Channels Motors 5Hp Page Units with StatitracTM Installation Sensor & Tubing InstallationGas Heat Units SFH Connecting the Gas Supply Line to the Furnace Gas TrainHazardous Gases and Flammable Vapors 350 MBH 850 MBH Hot Water Heat Units SLH Flue Assembly InstallationFlue Assembly 1000 MBH Modulating 500 MBH 1000 MBHSSHG-90 Steam Heat Units SSHThrough 130 Ton units Page Use Copper Conductors Only Hazardous VoltageLive Electrical Components Typical Field Power Wiring 20 thru 75 Ton Page FLA Supply Fan Motor FLA ea HorsepowerCondenser Fans Total FLA Exhaust Fan MotorUnit Tonnage No. of Compressors Tonnage Type Designation CombustionBlower Motor Sfhf Only On the Next Single Source Power 380V, 415V, 460V,Load Definitions Load = Current of the Largest Motor Compressor or FAN MotorMCA = 1.25 x Load MOP = 1.25 x Load Power Wire Sizing and Protection Device EquationsDisconnect Switch Sizing DSS Dual Source Power units 200VConstant Volume System Controls Controls using 24 VACInstallation Controls using DC Analog Input/Outputs Constant Volume or Variable Air Volume System Controls Variable Air Volume System ControlsDepressurize PressurizeFire Purge16A Refer to Wiring Notes on16B Page 17A 17B Input Voltage VAV SetpointTable of Contents Sequence of Operation Cooling Sequence of OperationPropane Gas Gas Heating Sequence of OperationFenwal Ignition System Unit Start-UpFull and Limited Modulating Gas Furnace Modulating Gas Sequence of OperationFlame Failure Freeze Protection Electric Heat Sequence of OperationUnit Start-Up Wet Heat Sequence of Operation Electrical Phasing Unit PowerCompressor Damage Voltage Imbalance Voltage Supply and Voltage ImbalanceVoltage Supply IGV Service Test Guide for Component OperationSupply FAN If all of the fans are rotating backwards System Airflow Measurements Constant Volume SystemsRotating Components Verifying Proper Fan RotationCondenser Fan Location with Human Interface Designator Variable Air Volume Systems Optional with all units equipped with an economizer Exhaust Airflow MeasurementTraqTM Sensor Airflow Measurement Optional with all UnitsTon Supply Fan Performance without Inlet Guide Vanes 20 & 25 Ton Supply Fan Performance without Inlet Guide VanesWocfm 1200 RPM 40 HP 40% 300 RP Standard Evaporator Coil 20000 30000 40000 50000 60000 Drop Ton Supply Fan Performance with Inlet Guide Vanes 20 & 25 Ton Supply Fan Performance with Inlet Guide Vanes15 HP 900 RPM 80% 10 HP RPM AIR Through 75 Ton Component Static Pressure Drops Inches W.CCFM RPM BHP STDAIR HF-C30 000 HF-C20 000HF-C25 000 10,000AIR RPM BHP RPM BHP BHP RPM BHP RPM BHPFresh Air & Return Air Damper Operation Economizer Damper AdjustmentTo Adjust the Fresh Air Damper Travel Exhaust Air DampersTon Units Damper Travel Adjustment PositionConnecting Rod Crank Arm Hole Configuration70 & 105 Ton Fresh Air & Return Air Linkage AdjustmentCompressor Start-Up All SystemsAt Low Ambient Start-Up Compressor Operational SoundsRefrigerant Charging At ShutdownCompressor Locations Cooling Cycle Pressure Curve 340 320 Full Load 380 360 340 OD Ambient Full Load 380 360 340 OD Ambient 320 240 220 380 360 OD Ambient Low Ambient Dampers Thermostatic Expansion ValvesCharging by Subcooling Gas Furnace Start-Up Electric, Steam and Hot Water Start-UpTwo Stage Gas Furnace High-Fire AdjustmentCombustion Air Adjustment O2 Low-Fire Adjustment 500 MBH, 850 & 1,000 MBH onlyCO2 Pressure MBHFiring Manifold Unit control Full Modulating Gas FurnaceHeat Exchanger Modulating Gas Regulator Legend Limited Modulating Gas Furnace Unit Start-UpModulating Gas Regulator Typical Gas Furnace Unit Start-Up Final Unit CheckoutService & Maintenance Unit Internal Fuse Replacement Data & VFD Factory Settings Service & MaintenanceModel Type Unit Model Box-type Note QtyQty Size of each Wet Heat Coil Fin Data Total Coil FinsService & Maintenance Fan Belt Adjustment Gripbelts Gripnotch Cross Small P.D Section Range Min Max Scroll Compressor ReplacementSuction Line Filter/Drier Installation Supply and Exhaust Fan VFD Programming Parameters Hazardous Voltage! w/CapacitorsVFD Programming Parameters Cooling Season Service & Maintenance Monthly MaintenanceFilters Heating Season Coil CleaningSteam or Hot Water Coils Coil CleanersContains Refrigerant Final Process Index See Figure Gate type valve 36-37 See -12 Figure See VOM Contacts -16 Figure Equipment Damage From Ultraviolet UV Lights Warranty and Liability Clause115 116
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