Trane Performance Climate Changer UCCA Series Installation, Operation And Maintenance Manual
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Trane Performance Climate Changer UCCA Series Installation, Operation And Maintenance Manual

Trane Performance Climate Changer UCCA Series Installation, Operation And Maintenance Manual

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Installation, Operation, and Maintenance
Performance Climate Changer™
Air Handler
Model UCCA for Indoor and
Outdoor Applications
Dischage Plenum
Sizes 3 to 30
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of
heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are
attached to the equipment.
October 2023
Electric
Fan
Heat
Control Box
VFD
SAFETY WARNING
CLCH-SVX009L-EN
Coil
Coil
Pipe Cabinet
Hood
Mixing Box /
Filter

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  • Page 1 Installation, Operation, and Maintenance Performance Climate Changer™ Air Handler Model UCCA for Indoor and Outdoor Applications Electric Coil Coil Hood Heat Control Box Mixing Box / Dischage Plenum Filter Pipe Cabinet Sizes 3 to 30 SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
  • Page 2 When working with or around hazardous chemicals, these compounds have the same potential impact to the ALWAYS refer to the appropriate SDS and OSHA/GHS environment. Trane advocates the responsible handling of all (Global Harmonized System of Classification and refrigerants. Labeling of Chemicals) guidelines for information on...
  • Page 3 Copyright This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part without written permission. Trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change.

  • Page 4: Table Of Contents

    Table of Contents Introduction Using Integral Base Frame ... . .27 ......6 Overview of Manual .
  • Page 5 Table of Contents Pre-Startup Checklist ....59 General Checks ..... 59 Fan-Related Checks .

  • Page 6: Introduction

    Carefully review the procedures discussed in this manual to Note: The unit serial number and order number is required minimize installation and startup difficulties. when ordering parts or requesting service for a Trane air handler. Nameplate Each Performance air handler section includes one or more nameplate/label as shown in the figure below, that identifies Figure 1.

  • Page 7: General Information

    For more information, refer to the following documents, insulation are acceptable for ambient temperatures up to 104º available from your local Trane sales engineer: F, while motors with Class F insulation can withstand ambient temperatures to +140º F (60º C).

  • Page 8: Control Solutions

    This package can be used as part of a stand-alone operation, or it can be fully integrated into a comprehensive WARNING control system. The Trane EarthWise™ system incorporates the benefits of factory-installed controls and links the air Proper Field Wiring and Grounding handler to the Tracer®...

  • Page 9: Model Number Descriptions

    Model Number Descriptions Digit 1, 2, 3, 4 - Product Group Digit 12 - Coil, Drain Pan and Motor Digit 15 - Coil Options Side (continued) UCCA = Performance Climate Changer No coil option Aluminum fin with galvanized Stainless steel drain pan, RH coil/ Digit 5 - Configuration casing, 1/2 in.
  • Page 10 Model Number Descriptions Digit 18, 19, 20 - Electric Heater kW Digit 23 - Motor Horsepower Digit 25 - Drives (continued) (continued) No motor 2000 rpm fixed/1950-2050 1 hp (0.746 kW) variable 032 = 32.0 kW 1 1/2 hp (1.119 kW) Direct-drive plenum/MI fan 034 = 34.0 kW 2 hp (1.492 kW)
  • Page 11 Model Number Descriptions Digit 26, 27 - VFD setting/DDP Fan Digit 32 - Controls Options 3 Speed (continued) No controls - 3 options Outdoor air temperature sensor B7 = 117 Hz/3475 rpm field wired B8 = 118 Hz/3505 rpm Duct static pressure sensor field B9 = 119 Hz/3535 rpm wired...

  • Page 12: Pre-Installation

    See the Receiving Checklist section  Notify your Trane sales representative of the damage and below for detailed instructions. arrange for repair. Do not attempt to repair the unit without consulting the Trane representative.

  • Page 13: Outdoor Storage

    Pre-Installation Outdoor Storage • Allow room for supply and return piping, ductwork, electrical connections, and coil removal. • Ensure there is adequate height for condensate drain NOTICE requirements. See “Drain Pan Trapping,” p. Corrosion! Note: If unit is installed in a mechanical room on a pad, Use only canvas tarps to cover air handlers.

  • Page 14: Roof Curb Installation Checklist

    Pre-Installation Roof Curb Installation Checklist See Roof Curbs For Performance Climate Changer™ Air Handlers Model UCCA for Outdoor Applications Sizes 3-30 – Installation Instructions (CLCH-SVN006*-EN) for information on installing roof curbs. It is recommended that the curb be installed directly on the support members and fastened to the supports using tack welds or other equivalent methods.

  • Page 15: Dimensions And Weights

    Dimensions and Weights Service Clearances Figure 3. Service clearances for indoor units Unit Coil/Access Mixing Box / Filter Filter Coil Coil Electric Heat Control Box Table 1. Service clearance dimensions (inches) for indoor units Unit Size Component Filter 40.00 44.00 42.00 42.00 40.00...
  • Page 16 Dimensions and Weights Figure 4. Service clearances for outdoor units Electric Coil Coil Hood Heat Control Box Mixing Box / Dischage Plenum Filter Pipe Cabinet Table 2. Service clearance dimensions (inches for outdoor units) Unit Sizes Component Coil Pull 49.00 62.00 66.00 78.00...
  • Page 17 Dimensions and Weights Table 3. Performance air handler model UCCA dimensions (inches) 1500 3000 4000 5000 6000 7000 3500 10,500 12,500 15,000 Nom airflow (CFM) Unit size Indoor units Horizontal unit height 27.50 32.50 38.00 38.00 41.75 45.57 48.07 54.32 60.57 60.57 Horizontal unit width...
  • Page 18 Dimensions and Weights Table 3. Performance air handler model UCCA dimensions (inches) (continued) 1500 3000 4000 5000 6000 7000 3500 10500 12500 15000 Nom airflow (CFM) Unit size Fan/Motor data FC fans Wheel size (in.) 12x9 12x12 15x15 18x15 18x18 20x15 20x20 20x18...

  • Page 19: Fans

    Dimensions and Weights Fans Table 4. Fan weights (pounds) Supply Fan Motorized Impeller Supply Fan Unit Size Supply Fan FC Fan Supply Fan DDP Fan Fan (Standard) Motorized Impeller Fan (Premium) 30.71 60.63 30.00 60.00 47.09 96.03 87.00 69.21 110.09 87.00 120.50 83.02...

  • Page 20: Controls

    Dimensions and Weights Controls All controls boxes and starters weigh 15 pounds. Table 6. VFD Weights (pounds) and line input VFD (single Fan) VFD (dual Fan) Type Line Input Weight Line Input Weight 200 V / 60 Hz / 3 PH 3.50 1800 4.20...

  • Page 21: Installation - Mechanical

    Installation - Mechanical Lifting and Rigging Vertical FC Fan 3 to 10 1. Remove screws attaching shipping protection brackets Remove Shipping Tie-Downs from center of isolation base to casing mounting bracket. Prior to unit placement, remove the shipping tie-downs. See Figure 7.

  • Page 22: Skid Removal For Indoor Units

    Installation - Mechanical FC Fan Size 12 to 30 WARNING 1. Remove drive side screws on isolator brackets Risk of Unit Dropping! 2. Cut banding and remove Improper use of the tie down brackets could result in Figure 9. Shipping tie-down removal for FC fan 12 to 30 unit dropping and crushing technicians which could result in death or serious injury, and equipment damage.

  • Page 23: Lifting Indoor Units

    Installation - Mechanical Lifting Indoor Units Figure 13. Lifting indoor lug (with optional baserail) WARNING 0.875 Heavy Objects! Failure to follow instructions below or properly lift unit could result in unit dropping and possibly crushing operator/technician which could result in death or serious injury, and equipment or property-only damage.

  • Page 24: Lifting Outdoor Units

    Installation - Mechanical • Use all lifting lugs provided. See the figure below for lug Figure 15. Fork lift points hole sizes and location. Figure 17. Outdoor lifting lugs 2.50 1.38 Side View Unit lifting lug 2.50 1.25 • Lifting Indoor Units with Optional Baserail For unit sizes 3 to 30, a forklift may be used to lift a single section or small subassembly, provided the forks extend under Hood lifting lug...

  • Page 25: Unit Placement And Assembly For Indoor Air Handlers

    Installation - Mechanical Lifting Hoods and Pipe Cabinets • Section assembly; see “Unit Assembly for Indoor Units,” • Ceiling-suspended indoor unit assembly; see “Ceiling WARNING Suspension for Indoor Units,” p. Risk of Unit Dropping! WARNING Placing, assembling, and/or suspending more than one module/subassembly at a time could result in module/ Toxic Fumes! subassemblies dropping and crushing technicians...

  • Page 26: Ceiling Suspension For Indoor Units

    Installation - Mechanical • For parallel-to-airflow channels, size channels based on a Figure 21. Tie downs can be used to tie down to floor four-point load distribution. • For perpendicular-to-airflow channels, size channels based on the load distribution of the individual sections and install the channels so that both ends of every section are supported.

  • Page 27: Using Integral Base Frame

    Installation - Mechanical Figure 23. Typical ceiling suspension for parallel-to-airflow channels and perpendicular-to-airflow channels Using Integral Base Frame If a factory-provided integral base frame is used for ceiling suspension, the individual sections and/or subassemblies will have base frame shipping splits and base frame lifting lugs. While using the base frame for ceiling suspension: •...

  • Page 28: Unit Assembly For Indoor Units

    Installation - Mechanical Figure 24. Ceiling suspension for unit sizes 3 to 30 Hole diameter is 0.625 inches • Bolt the shipping splits together. Figure 25. Bring sections close, remove strap • Ensure that the hanger rods extend through the bottom of channels.

  • Page 29: Fan Removal

    Installation - Mechanical If the unit has a second level fan, it is necessary to remove the screws, as shown in the figure below, before joining the mixing or filter section to the coil section. Figure 26. Joining mixing, return, and other accessories section to unit with second level fan Final assembly with screws removed Remove Bottom Two Screws:...
  • Page 30 Installation - Mechanical Figure 28. Remove screws, install lifting lugs Figure 29. Use spreader bars to lift top unit (1) Lifting lug # LUG00180 Temporarily use for lifting second level. (2) Screw: 0.313 - 18 x 0.875 sheet metal (1) Lifting lug #LUG00180 (3) Screw: Temporarily use for...

  • Page 31: Unit Placement And Assembly For Outdoor Air Handlers

    Refer to the unit submittals and unit tagging for correct placement of all sections. If there are any discrepancies between the submittals and the unit tagging, contact your local Trane representative before proceeding. Following the order of the sections on the unit submittals and Intake...
  • Page 32 Installation - Mechanical Strips of tape must contact each other at intersections Butyl tape with liner Roof hook Trim angle 2. Remove the shipping supports from the pipe cabinet. 5. Lift the pipe cabinet using the side lifting lugs. Tuck the pipe cabinet roof underneath the unit roof overhang.

  • Page 33: Weather Hoods

    Installation - Mechanical Weather Hoods 1. Remove shipping protection plastic film from the hood. 2. Per the unit drawing, determine mounting locations of the unit weather hoods. 3. Using the factory provided screws, mount the weather hoods to the unit. 4.

  • Page 34: Filter Placement

    Installation - Mechanical Filter Placement Figure 36. Flat filter arrangement Size 8 Size 10 Size 6 8.90 ft² Size 3 11.10 ft² 6.90 ft² 3.50 ft² 7.00 9.00 3.00 2.00 2.00 5.00 3.50 3.50 34.00 34.00 28.50 23.50 30.00 43.00 47.00 59.00 Size 14...

  • Page 35: Duct Connections

    Installation - Mechanical Figure 37. Angle filter arrangement Size 3 Size 6 Size 8 Size 10 15.60 ft² 5.60 ft² 11.10 ft² 12.50 ft² 3.00 2.00 3.00 5.00 30.00 43.00 47.00 59.00 Size 17 30.00 ft² Size 12 Size 14 3.00 21.70 ft²...

  • Page 36: Field Conversions

    Installation - Mechanical Field Conversions 7. Remove V-belt(s). 8. Detach fan from the isobase and rotate to the desired Fan Discharge Conversion for Indoor Air discharge position. Handlers 9. It may be necessary to remove and reinstall the fan shaft on the opposite side depending on the new discharge Performance UCCA air handlers are available in the following position.

  • Page 37: Adjusting The Isolators

    Installation - Mechanical Figure 40. Contact service parts for angle/gasket kit Figure 42. Isolator adjustment for unit size 10 Required clearance Figure 43. Isolator adjustment for unit size 12 to 30 15. Reattach front/back panels. 16. Reattach access doors and side panels. 17.

  • Page 38: Coil Piping And Connections

    Pitch the connection lines horizontal or satisfactory coil operation and to prevent operational damage: downward toward an open drain. Trane recommends installing a plug to facilitate cleaning of the trap. See the table below for •...

  • Page 39: Steam Coil Piping

    Coil Piping and Connections Figure 44. Drain pan trapping for negative and positive pressure applications Section under negative pressure Section under positive pressure L = H + J + pipe diameter where: L = H + J + pipe diameter where: H = 1 inch for each inch of negative H = 1/2 inch (minimum) pressure plus 1 inch...
  • Page 40 0.25 inches HG (3.5 inches of water). modulated and is 25 psig or higher. Note: Trane steam coils require a minimum of 2 psi of To prevent coil damage, complete the following pressure to assure even heat distribution.

  • Page 41: Water Coil Piping

    Coil Piping and Connections Water Coil Piping submittals for coil water velocity. If the water velocity is below these minimums, vent the coil by one of the following methods: Figure 46 Figure 47 illustrate typical water coil piping 1. Install an air vent in the top pipe plug tapping of the return configurations.

  • Page 42: Refrigerant Coil Piping

    Coil Piping and Connections Refrigerant Coil Piping Figure 48 illustrates an example of a split-system component arrangement. Use it to determine the proper, relative sequence of the components in the refrigerant lines that connect the Note: Refer to for information on handling refrigerants. condensing unit to an evaporator coil.

  • Page 43: Liquid Lines

    MCHE. replacement of the filter core. Note: Trane condensing units with MCHE no longer employ pump-down, but isolation solenoids are required. The suggested solenoid uses a 120-volt service and requires code-compliant wiring to the condensing unit.

  • Page 44: Suction Lines

    After operating the system and testing Trane now has many years of experience in the successful use all fittings and joints to verify that the system is leak-free, of equipment without hot gas bypass in commercial comfort- insulate suction lines to prevent heat gain and unwanted cooling applications.

  • Page 45: Remodel, Retrofit, Or Replacement

    For specific handling concerns with R- coil), should be dismantled, drained, and reassembled. 410A, please contact your local Trane representative. After all components have been drained, the amount of Every part of an existing split system needs to be analyzed to...

  • Page 46: Field-Installed Evaporator Piping Examples

    Coil Piping and Connections Field-Installed Evaporator Piping Examples Figure 50. Single-circuit condensing unit: evaporator coil with one distributor Evaporator Coil with Standard Circuiting Suction line Liquid line Sight glass Thermal Solenoid Filter drier expansion valve valve (TXV) Distributor 1. Pitch the liquid line slightly –1 inch/10 feet – so that the refrigerant drains toward the evaporator.
  • Page 47 Coil Piping and Connections Figure 51. Single-circuit condensing unit: evaporator coil with two distributors 1. Pitch the liquid line slightly – 1 inch/10 feet – so the Evaporator Coil with Horizontal-Split refrigerant drains toward the evaporator. Suction line (Standard) Circuiting 2.
  • Page 48 Coil Piping and Connections Figure 52. Single-circuit condensing unit: evaporator coil with four distributors 1. Pitch the liquid line slightly – 1 in./10 feet – so that Evaporator Coil with Horizontal-Split the refrigerant drains toward the evaporator. (Standard) Circuiting 2. Provide one expansion valve per distributor. Suction line Thermal expansion valves (TXV)
  • Page 49 Coil Piping and Connections Figure 53. Dual-circuit condensing unit: evaporator coil with two distributors Evaporator Coil Suction line with Horizontal-Split (Standard) Circuiting (circuit 2) Liquid line (circuit 2) Sight glass Solenoid Distributor valve Suction line (circuit 1) Liquid line (circuit 1) Thermal Filter drier expansion...
  • Page 50 Coil Piping and Connections Figure 54. Dual-circuit condensing unit: evaporator coil with four distributors 1. Pitch the liquid line slightly – 1 in./10 feet – so that Evaporator Coil the refrigerant drains toward the evaporator. with Horizontal-Split (Standard) Circuiting Suction line 2.

  • Page 51: Electrical Requirements

    Properly connect the system’s oversized protective inadvertently energized. For variable frequency drives earthing (grounding) terminal. or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of NOTICE capacitors.

  • Page 52: Fuse Sizes

    Electrical Requirements Important recommendation Table 11. Electric heat voltage ratings Do not bundle or run interconnection wiring in parallel with or in the same conduit with any high-voltage wires (110 V or Unit Voltage Heater Voltage greater). Exposure of interconnection wiring to high-voltage wiring, inductive loads, or RF transmitters may cause radio frequency interference (RFI).

  • Page 53: Vfd Wiring Schematic

    SHEET DIMENSIONS ARE IN INCHES. TOLERANCE: THIS DRAWING IS PROPRIETARY AND SHALL NOT BE COPIED OR ITS CONTENTS DISCLOSED TO OUTSIDE PARTIES WITHOUT THE WRITTEN CONSENT OF TRANE HIGH VOLTAGE FINISH SINGLE MOTOR, VFD, NO ELECTRIC HEAT DRAWN BY: K. GRIGSBY...
  • Page 54 DIMENSIONS ARE IN INCHES. TOLERANCE: THIS DRAWING IS PROPRIETARY AND SHALL NOT BE COPIED OR ITS CONTENTS DISCLOSED TO OUTSIDE PARTIES WITHOUT THE WRITTEN HIGH VOLTAGE CONSENT OF TRANE FINISH SINGLE MOTOR, VFD, NO ELECTRIC HEAT DRAWN BY: K. GRIGSBY...
  • Page 55 DIMENSIONS ARE IN INCHES. TOLERANCE: THIS DRAWING IS PROPRIETARY AND SHALL NOT BE COPIED OR ITS CONTENTS DISCLOSED TO OUTSIDE PARTIES WITHOUT THE WRITTEN HIGH VOLTAGE CONSENT OF TRANE FINISH DUAL MOTOR, VFD, NO ELECTRIC HEAT DRAWN BY: K. GRIGSBY...
  • Page 56 DIMENSIONS ARE IN INCHES. TOLERANCE: THIS DRAWING IS PROPRIETARY AND SHALL NOT BE COPIED OR ITS CONTENTS DISCLOSED TO OUTSIDE PARTIES WITHOUT THE WRITTEN HIGH VOLTAGE CONSENT OF TRANE FINISH DUAL MOTOR, VFD, NO ELECTRIC HEAT DRAWN BY: K. GRIGSBY...
  • Page 57 DIMENSIONS ARE IN INCHES. TOLERANCE: THIS DRAWING IS PROPRIETARY AND SHALL NOT BE COPIED OR ITS CONTENTS DISCLOSED TO OUTSIDE PARTIES WITHOUT THE WRITTEN HIGH VOLTAGE CONSENT OF TRANE FINISH SINGLE MOTOR, NO VFD, NO ELECTRIC HEAT DRAWN BY: K. GRIGSBY...
  • Page 58 DIMENSIONS ARE IN INCHES. TOLERANCE: THIS DRAWING IS PROPRIETARY AND SHALL NOT BE COPIED OR ITS CONTENTS DISCLOSED TO OUTSIDE PARTIES WITHOUT THE WRITTEN HIGH VOLTAGE CONSENT OF TRANE FINISH SINGLE MOTOR, NO VFD, NO ELECTRIC HEAT DRAWN BY: K. GRIGSBY...

  • Page 59: Start-Up

    Table 17 on tagout procedures to ensure the power cannot be page inadvertently energized. For variable frequency drives or other energy storing components provided by Trane – Fan sheaves should be tight and aligned. or others, refer to the appropriate manufacturer’s •...

  • Page 60: Motor-Related Checks

    Units shipped with an optional variable frequency drive (VFD) Unit Operation are preset and run-tested at the Trane factory. If a problem with a VFD occurs, ensure that the programmed parameters listed Table 15 have been set. If trouble still persist after verifying...
  • Page 61 Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors.

  • Page 62: Tension The Fan Belt

    Start-Up Tension the Fan Belt Figure 64. Belt tensioner Notice Belt Over-Tension! Over-tensioning the belt could result in equipment Force scale damage as it reduces fan and motor bearing life, Small O-ring accelerates belt wear, and can cause shaft failure. Notice Belt Under-Tension! Under tensioning the belt could result in belt failure.

  • Page 63: Determine Fan Speed

    Start-Up Table 16. Typical sheave diameter and deflection force Belt Deflection Force (lbs) Super gripbelts and unnotched gripbands Gripnotch belts and notched gripbands Smallest sheave Cross section diameter range (in.) Speed (rpm) range Used belt New belt Used belt New belt 1,000–2,500 3.0–3.6 2,501–4,000...

  • Page 64: Align Fan And Motor Sheaves

    Start-Up Align Fan and Motor Sheaves Figure 66. Proper drive alignment Align the fan and motor sheaves using a straightedge. The Center line straightedge must be long enough to span the distance Lines must must coincide be parallel between the outside edges of the sheaves. When the sheaves are aligned, the straightedge will touch both sheaves at points A through D (see Figure...

  • Page 65: Routine Maintenance

    Routine Maintenance WARNING WARNING Hazardous Service Procedures! Rotating Components! Failure to follow all of the recommended safety Failure to secure rotor or disconnect power before warnings provided, could result in death or serious servicing could result in rotating components cutting injury.

  • Page 66: Air Filters

    Protective Equipment (PPE) including goggles or face prevent air bypass. If using filters not supplied by shield, chemical resistant gloves, boots, apron or suit Trane, apply foam gasketing to the vertical edges of the as required. For personal safety refer to the cleaning filter.
  • Page 67 Routine Maintenance Figure 68. Gain access to both sides of coil shown for sizes 8, 14, 17, 21, 25, and 30 Access panel can now be removed 5. Mix a high-quality coil cleaning detergent with water according to the manufacturer’s instructions. For MI fan vertical unit, access via the coil door, see Figure Note: If the detergent is strongly alkaline after mixing (PH 8.5...

  • Page 68: Refrigerant Coils

    Coil Winterization Water coil winterization procedures consist primarily of WARNING draining water from the coil before the heating season. Trane recommends flushing the coil with glycol if coils will be exposed Hazardous Pressures! to temperatures below 35 degrees.

  • Page 69: Moisture Purge Cycle

    Routine Maintenance Moisture Purge Cycle 2. Wearing the appropriate personal protective equipment, remove any standing water. By it’s very nature, any HVAC unit with a cooling coil serves as 3. Scrape solid matter off of the drain pan. a dehumidifier, reducing the surrounding air’s ability to hold water vapor as its temperature falls.
  • Page 70 Routine Maintenance • Horizontal units equipped with a housed fan, low limit Figure 72. Resetting low limit switch for vertical switch can be accessed through the fan access door (see motorized impeller fans Figure 70). Figure 70. Resetting low limit switch for horizontal units with housed fans Note: Fan and coil access Low limit...
  • Page 71 Routine Maintenance Figure 73. Resetting low limit switch for horizontal DDP fan units sizes 3, 6, 10, and 12 Removable access panel Panel removed from unit Screw: 10-16 x 0.750 self-driller Remove all from perimeter panel Detail A Low limit freeze stat For unit sizes 8 and 14 to 30, see Figure Figure 74.

  • Page 72: Fans

    Routine Maintenance Fans Figure 75. Bearing set screw alignment WARNING Rotating Components! Failure to secure rotor or disconnect power before servicing could result in rotating components cutting and slashing technician which could result in death or serious injury. The following procedure involves working with rotating components.

  • Page 73: Fan Bearing Lubrication

    Routine Maintenance Fan Bearing Lubrication Fan Motor Inspection Inspect fan motors periodically for excessive vibration or NOTICE temperature. Operating conditions will vary the frequency of inspection and lubrication. Motor lubrication instructions are on Bearing Failure! the motor tag or nameplate. If for some reason these instructions are not available, contact the motor manufacturer.

  • Page 74: Troubleshooting

    Troubleshooting This section is intended to be used as a diagnostic aid only. For detailed repair procedures, contact your local Trane service representative. WARNING Hazardous Service Procedures! Failure to follow all of the recommended safety warnings provided could result in death or serious injury. The maintenance and troubleshooting procedures recommended in this manual could result in exposure to electrical, mechanical or other potential safety hazards.
  • Page 75 Troubleshooting Table 22. Air handler troubleshooting recommendations (continued) Symptom Probable Cause Recommended Action Poor alignment Loosen bearing set screws and realign (see “Align Fan and Motor Sheaves,” p. Bearing noise Failed bearing Replace bearing. Inadequate lubrication Replace bearing. Incorrect airflow Check fan operating condition.
  • Page 76 For more information, please visit trane.com or tranetechnologies.com. Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

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