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Daikin Custom Air Handler MD4 VFD: Every 3 Years Maintenance

This procedure is for replacing your equipment's drive module fan. If installed in an appropriate environment, the drive requires very little maintenance. This procedure lists the routine maintenance intervals recommended by Daikin.
MaintainX
08/10/2022

Daikin Custom Air Handler MD4 VFD: Every 3 Years Maintenance

This procedure is for replacing your equipment's drive module fan. If installed in an appropriate environment, the drive requires very little maintenance. This procedure lists the routine maintenance intervals recommended by Daikin.

    Maintenance Intervals

    If installed in an appropriate environment, the drive requires very little maintenance. The table lists the routine maintenance intervals recommended by Daikin McQuay

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    Maintenance:

    Interval:

    Instruction:

    Cooling Fan

    The drive’s cooling fan has a life span of minimum 25 000 operating hours. The actual life span depends on the drive usage and ambient temperature.

    When the Assistant Control Panel is in use, the Notice Handler Assistant informs when the definable value of the operating hour counter is reached (see parameter 2901 COOLING FAN TRIG). This information can also be passed to the relay output (see parameter 1401 RELAY OUTPUT 1) regardless of the used panel type.

    Fan failure can be predicted by the increasing noise from the fan bearings. If the drive is operated in a critical part of a process, fan replacement is recommended once these symptoms start appearing. Replacement fans are available from ABB. Do not use other than Daikin specified spare parts.

    Replacing the Cooling Fan (frame sizes R1…R4)

    Only frame sizes R1…R4 include a fan; frame size R0 has natural cooling.

    • Screenshot2021-03-16at9.00.48AM.png

    Figure 28: Removing the Fan

    • Screenshot2021-03-16at9.01.30AM.png
    Source: MaintainX (Community Member)

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