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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
+ 13 more

Work Order Templates

Pre-built workflows to keep your asset running smoothly.

Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
+ 29 more

Procedures

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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
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Carrier HVAC Unit 48TFD012

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Maintenance Plans for Carrier HVAC Unit Model 48TFD012

Integrate maintenance plans directly into your work orders in MaintainX.

Condenser-Fan Adjustment

Shut off unit power supply and tag disconnect

Remove condenser-fan assembly

Loosen fan hub setscrews

Adjust fan height as shown in Fig. 48

Tighten setscrews

Replace condenser-fan assembly

Run this procedure

Evaporator-Fan Speed Adjustment

Preparation

Shut off unit power supply and install lockout tag

Fan Speed Adjustment

Loosen belt by loosening fan motor mounting plate nuts

Loosen movable pulley flange setscrew

Adjust movable flange to change fan speed

Set movable flange at nearest flat of pulley hub and tighten setscrew

Pulley Alignment

Loosen fan pulley setscrews

Run this procedure

Flue Gas Passageway Inspection

Remove the combustion blower wheel and motor assembly

Remove the flue cover to inspect the heat exchanger

Clean all surfaces using a wire brush

Check that all parts are in place after cleaning

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Gas Train Maintenance

Cleaning and Adjustment

Remove burner rack from unit as described in Removal and Replacement of Gas Train section

Inspect burners for dirt

Remove burners from rack if dirty

Clean burners and cross-over port using a soft brush

Adjust spark gap according to Fig. 54

Reinstall burners on rack

Reinstall burner rack as described in Removal and Replacement of Gas Train section

Run this procedure

1 Yearly Condenser Coil Cleaning

Inspect coil monthly

Clean condenser coil annually, and as required by location and outdoor air conditions

One-Row Coils Cleaning

Wash coil with commercial cleaner

Clean outer surfaces with a stiff brush

2-Row Coils Cleaning

Turn off unit power

Remove top panel screws on condenser end of unit

Remove condenser coil corner post

Run this procedure

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Carrier HVAC Unit 48TFD012

Manual for Carrier HVAC Unit 48TFD012

Complete asset maintenance, one click away

Documents & Manuals

Work Order Templates

Procedures

Parts

Maintenance Plans for Carrier HVAC Unit Model 48TFD012

Unlock efficiency with MaintainX Assist

More from Carrier

Explore Other Assets

Unlock
efficiency with MaintainX Assist