Back

Carrier WEATHERMAKER® 48A CV/SAV, Vertical Commercial Rooftop HVAC Maintenance

The Carrier WEATHERMAKER® 48A CV/SAV, Vertical Commercial Rooftop HVAC Maintenance ensures the quality of your machine. Failure to follow these procedures can result in serious fire or personal injury.
MaintainX
04/26/2021

Carrier WEATHERMAKER® 48A CV/SAV, Vertical Commercial Rooftop HVAC Maintenance

85 steps
The Carrier WEATHERMAKER® 48A CV/SAV, Vertical Commercial Rooftop HVAC Maintenance ensures the quality of your machine. Failure to follow these procedures can result in serious fire or personal injury.
  • Consider the following information before maintaining or servicing equipment:

  • Warning

  • 1. TURN OFF GAS SUPPLY AND THEN ELECTRICAL POWER TO YOUR UNIT BEFORE SERVICING OR PERFORMING MAINTENANCE.

  • 2. Do not turn off electrical power to this unit without first turning off the gas supply

  • 3. When removing access panels or performing maintenance functions inside your unit, be aware of sharp sheet metal parts and screws. Although special care has been taken to reduce sharp edges inside the unit, be extremely careful when handling parts or re

  • Failure to follow these procedures can result in serious fire or personal injury.

  • Air Filter(s)

  • To replace or inspect filters:

  • Fig. 4 — To Shut Unit Off

  • If you have difficulty in locating your air filter or if you have questions concerning proper filter maintenance, contact your dealer for instructions. When replacing your unit filters, always use the same size and type of filter that was originally suppl

  • Units with outdoor air capability have a cleanable filter for the outdoor air. This filter should be checked annually and cleaned as necessary with steam or hot water and a mild detergent. Do not use throwaway filters in place of cleanable filters.

  • Warning !

  • Never operate your unit without filters in place. Failure to heed this warning may result in damage to the blower motor and/or compressor. An accumulation of dust and lint on internal parts of your unit can cause loss of efficiency and, in some cases, fir

  • Heat Exchanger

  • Fans and Belts

  • Periodically check the condition of the

  • When service is necessary, call your dealer.

  • Indoor-Fan Motor, Outdoor-Fan Motor, and Combustion Fan Motor

  • Fan Shaft Bearings

  • Evaporator and Condenser Coils

  • Contact your dealer for the required annual maintenance.

  • Condensate Drain

  • Compressor

  • Condenser Fan

  • Warning! Do not poke sticks, screwdrivers, or any other object into revolving fan blades. Severe bodily injury may result.

  • The fan must be kept free of all obstructions to ensure proper cooling. Contact your dealer for any required service.

  • Electrical Controls and Wiring

  • Refrigerant Circuit

  • Combustion Area and Vent System

  • CAUTION ! If your unit makes any unusual or especially loud noises during heating, shut down the heating section and call your dealer

  • See Fig. 1 and 2 and proceed as follows to inspect the combustion area and power-venting system of your unit.

  • Using a flashlight, carefully inspect the burner areas for

  • CAUTION! If dirt, soot, rust, or scale accumulations are found, call your dealer and do not operate your heating section.

  • WARNING! Components in heat section may be hot after unit has been started. When observing flame, be careful not to get close to or touch heating components. Serious personal injury may result

  • Unit Panels

  • REGULAR DEALER MAINTENANCE

  • In addition to the type of routine maintenance you might be willing to perform, your unit should be inspected regularly by a properly trained service technician. An inspection (preferably each year, but at least every other year) should include the follow

  • Inspection of all flue product passages including the

  • Your servicing dealer may offer an economical service contract that covers seasonal inspections. Ask for further details.

  • Complete service instructions can be found in the unit Controls, Start-Up, Operation, Service and Troubleshooting literature.

  • BEFORE YOU CALL FOR SERVICE, CHECK FOR PROBLEMS THAT CAN BE EASILY SOLVED

  • If insufficient heating or cooling is suspected:

  • If your unit is not operating at all, check the following list for easy solutions:

  • Be sure the thermostat mode is in the proper

  • If closed, has the gas been shut off for safety reasons? Otherwise, you may open the valve and follow the start-up procedures listed in this manual.

  • NOTE: Before proceeding with the next check, turn OFF the electrical power supply to the unit. Remove the gas section access panels

  • If the dealer knows exactly which unit you have, he may be able to offer suggestions over the phone, or save valuable time through knowledgeable preparation for the service call.

  • IN CASE OF TROUBLE

  • If, after performing the above checks, unit performance is unsatisfactory, shut off the unit and call your dealer

  • Dealer’s Name

  • Telephone No

  • Unit Model

  • Unit Serial Number

Source: Carrier

Please note that any procedure, checklist, or other document available in the MaintainX Global Procedure Library is provided for general education and information only and does not constitute legal, medical, or financial advice. MaintainX makes the materials available AS IS and AS PROVIDED, without warranties of any kind. By downloading or using any such materials, you assume the risk that they may not be appropriate for your specific situation and agree that you are solely responsible for any such use, including compliance with applicable law and with meeting any conditions of product warranties.