Carrier T--298 service manual Air Handling System Removal, Blower Wheel

Page 32

Condenser Fan

Figure 3-22 Condenser Fan Removal

3.5.6Evaporator Blower Wheel Adjustment or Removal

a. Remove exterior cover assembly. Refer to Exterior Cover Assembly Removal instructions 3.5.1

b. Remove control box assembly. Refer to Control Box Assembly Removal instructions 3.5.3

3.5.7Air Handling System Removal

a.Remove exterior cover assembly. Refer to paragraph 3.5.1.

b.Remove control box assembly. Refer to paragraph 3.5.3.

c.Remove upper scroll assembly. Refer to paragraph 3.5.4.

d.Remove motor assembly. Refer to paragraph 3.5.5.

e.Remove 8 screws securing lower scroll assembly to the base pan assembly.

f.Remove 1 screw from clamp securing suction tube to the base pan assembly.

g.Remove 3 nuts securing the compressor to the base pan assembly.

h.Remove 2 screws securing the condenser orifice to the base pan assembly.

i.Remove 2 screws securing the condenser coil as- sembly to the base pan assembly.

j.Carefully lift the entire assembly off of the base pan assembly.

k.Reverse the above procedure for reassembly, ensur- ing that the air handling system is positioned correct- ly. Tighten all screws.

c.Remove upper scroll assembly. Refer to Upper Scroll Assembly Removal instructions 3.5.4

d.Loosen motor assembly. Refer to Motor Assembly Removal instructions 3.5.5.

e.Mark shaft at a point where wheel hub and motor shaft meet to aid in reassembly.(See Figure 3-23.)

f.Remove 1 set screw holding the blower wheel to the motor shaft. (See Figure 3-23)

g.Slide off blower wheel from motor shaft

h.Reverse above procedure for reassembly.

Set Screw

Condenser Cover

Condenser

Cover Screws

Compressor

Motor Assembly

Base Pan

Figure 3-23 Blower Wheel

Base Pan

Figure 3-24 Condenser With Motor Assembly &

Compressor

T--298

3-8

Image 32

Contents Model AirV AirV Safety Summary General Safety NoticesOperating Precautions Maintenance PrecautionsSpecific Warning and Caution Statements Specific Warnings and CautionsSafety 298 Table of Contents Table of Contents List of Figures Figure NumberList of Tables Table NumberSection Description IntroductionSerial Number Identification Design Change DescriptionsUpper Unit Roof Ceiling UnitFor Part no Additional Support ManualsMANUAL--FORM no Equipment Covered Type of Manual Ceiling Unit Component Identification Free--Blow Component Identification -- Low Profile -- Upper Unit Component Listing--Ceiling Unit For Ducted Systems Supply AIR Return AIRFree Blow Type Refrigerant CYCLE--STANDARD System CationsSTART--UP Refrigerant Flow Schematic -- Heat Pump -- Cool Mode Cooling Refrigerant Cycle -- Heat PumpPage Section Troubleshooting Heater Cycles on Limit Switch HEAT/ Cool Version only Insufficient COOLING, Cooling AIR not AdequateCondenser AIR not Adequate Insufficient CoolingClearing Diagnostic Alarms Inadequate Heat HEAT--PUMPPriority Malfunction Service -- General Section Service and MaintenancePreventative Maintenance Ceiling Grill -- Free Blow 3.3.3 Ceiling Panel Removal Indoor Thermostat Removal Indoor Thermostat 3.3.7 Air Sweep RemovalFilter Removal Control Box Assembly RemovalCeiling Unit -- Ducted Systems Fuse Removal Service -- Upper Unit -- STANDARD, HC & HPPCB Display Removal Compressor Replacement 15 Control BoxUpper Scroll Assembly Removal 19 Motor AssemblyAir Handling System Removal 23 Blower WheelLine Voltage -- 10% 27 Upper Scroll Assembly Locking Tabs b. & Screw Locations c 30 Condenser Fan Assembly Retaining Ring Condenser Motor Removal 34 Evaporator Motor Locking TabsCapacitor Removal Change from Fahrenheit to Celsius willBe permanent. It cannot be changed back to Fahrenheit38 Remote Control Components SET Thermostat Configuration LCD DisplayCheck Thermostat Operation Thermostat Powerbox AssemblyUpper Unit Thermostat Powerbox Assembly Ac to ry Wiri ng Fie ld Wiri ngSection Wiring Schematics Upper Unit Schematic -- Standard & HCCeiling Unit Schematic -- Cooling Only Heat Pump -- Ceiling Unit -- Free Blow Heat Pump -- Upper Unit -- Ducted 10 Ceiling Unit -- Wall Thermostat -- Ducted & Free Blow Wall Mounted ThermostatsIndex Ceiling Unit -- Ducted Systems Ceiling Unit -- Free Blow