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Precedent™RT-SVX38D-EN Rooftop Units: Monthly Maintenance

Preventive maintenance is a simple and cost-effective way to ensure your HVAC system is running at peak efficiency and to catch problems before they get serious.
MaintainX
08/10/2022

Precedent™RT-SVX38D-EN Rooftop Units: Monthly Maintenance

Preventive maintenance is a simple and cost-effective way to ensure your HVAC system is running at peak efficiency and to catch problems before they get serious.

    Monthly Maintenance

    Before completing the following checks, turn the unit OFF and lock the main power disconnect switch open.

    ! WARNING

    Rotating Components!

    During installation, testing, servicing and troubleshooting of this product it may be necessary to measure the speed of rotating components. Have a qualified or licensed service individual who has been properly trained in handling exposed rotating components, perform these tasks. Failure to follow all safety precautions when exposed to rotating components could result in death or serious injury

    Before completing the following checks, turn the unit OFF and lock the main power disconnect switch open.

    Filters

    Inspect the return air filters. Clean or replace them if necessary. Refer to the unit Service Facts for filter information.

    Condensate Overflow Switch

    During maintenance, the switch float (black ring) must be checked to ensure free movement up and down.

  • Cooling Season

  • 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.

  • Heating Season

  • Coil Cleaning

  • Regular coil maintenance, including annual cleaning enhances the unit’s operating efficiency by minimizing the following:

  • Hail Guard Removal

  • Microchannel (MCHE) Coils

  • ! NOTICE

  • Coil Damage!

  • Failure to follow instructions below could result in coil damage. DO NOT use any detergents with microchannel condenser coils. Use pressurized water or air ONLY, with pressure no greater than 600psi.

  • The recommended cleaning method for microchannel condenser coils is pressurized water or air with a nonpinpoint nozzle and an ECU of at least 180 with pressure no greater than 600 psi. To minimize the risk of coil damage, approach the cleaning of the coil with the pressure washer aimed perpendicular to the face of the coil during cleaning.

  • Round Tube Plate Fin (RTPF) Coils

  • To clean refrigerant coils, use a soft brush and a sprayer (either a garden pump-up type or a high-pressure sprayer). A high-quality detergent is also required; suggested brands include “SPREX A.C.”, “OAKITE 161”, “OAKITE 166” and “COILOX”. If the detergent selected is strongly alkaline (ph value exceeds 8.5), add an inhibitor.

  • ! WARNING

  • Hazardous Chemicals!

  • Failure to follow all safety instructions below could result in death or serious injury. Coil cleaning agents can be either acidic or highly alkaline and can burn severely if contact with skin occurs. Handle chemical carefully and avoid contact with skin. ALWAYS wear Personal Protective Equipment (PPE) including goggles or face shield, chemical resistant gloves, boots, apron or suit as required. For personal safety refer to the cleaning agent manufacturer’s Materials Safety Data Sheet and follow all recomme

  • Safe Handling Practices:

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Source: MaintainX (Community Member)

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