General • Inspections

Daikin Roofpak Heating and Cooling IM 738-2: Monthly Maintenance

Planned maintenance is the best way to avoid unnecessary expense and inconvenience. This procedure will help you check your system, have it inspected at regular intervals by a qualified service technician. The required frequency of inspections depends upon the total operating time and the indoor and outdoor environmental conditions.

MaintainX

08/10/2022

Daikin Roofpak Heating and Cooling IM 738-2: Monthly Maintenance

Cabinet Sections

Once a month, open a door on each section and verify that no moisture or debris is accumulating in the unit.

Cooling circuits

The steps below are necessary only if the unit has been started:

Provide that each circuit is properly pumped down.
Pull the fuses to each compressor (store them in the control cabinet)
Close all the refrigerant service valves on each circuit.
Tag the valves as a warning for the technician who restarts the units

Gas Furnace

If the unit is equipped with a gas furnace, close the gas shutoff valve and open furnace control switch S3.

Control Compartment:

Daikin Applied recommends that the electronic control equipment in the unit be stored in a 5% to 95% RH (non-condensing) environment.
It may be necessary to put a heat source (light bulb) in the main control panel to prevent the accumulation of atmospheric condensate within the panel.
The location and wattage of the heat source is dependent on local environmental conditions.
Check the control compartment every two weeks to provide that the heat source is functional and is adequate for current conditions.

Restart

After extended storage, perform a complete start up. Inevitable accumulations of dirt, insect nests, etc. can contribute to problems if not cleaned out thoroughly prior to start up. In addition, thermal cycling tends to loosen mechanical and electrical connections. Following the startup procedure helps discover these and other issues that may have developed during the storage interval.

Source: MaintainX (Community Member)

Cabinet Sections

Once a month, open a door on each section and verify that no moisture or debris is accumulating in the unit.

Cooling circuits

The steps below are necessary only if the unit has been started:

Provide that each circuit is properly pumped down.

Pull the fuses to each compressor (store them in the control cabinet)

Close all the refrigerant service valves on each circuit.

Tag the valves as a warning for the technician who restarts the units

Gas Furnace

If the unit is equipped with a gas furnace, close the gas shutoff valve and open furnace control switch S3.

Control Compartment:

Daikin Applied recommends that the electronic control equipment in the unit be stored in a 5% to 95% RH (non-condensing) environment.

It may be necessary to put a heat source (light bulb) in the main control panel to prevent the accumulation of atmospheric condensate within the panel.

The location and wattage of the heat source is dependent on local environmental conditions.

Check the control compartment every two weeks to provide that the heat source is functional and is adequate for current conditions.

Restart