It is crucial for trouble-free printer operation that the Relative Humidity(RH) requirement is met at all times when the printer is loaded with ink.
Operation (with inks loaded): 45% to 80% RH, non-condensing.
Storage (without ink): 20% to 85% RH, non- condensing.
If the environment is below the specified Relative Humidity the ink will dry more quickly at the Print Head causing nozzles to become clogged.
Keep an electronic hygrometer (humidity gauge) near the printer at all times to ensure that the relative humidity is maintained. Electronic hygrometers are available in electronic stores, department stores or hardware stores, but be sure that they are of a high quality be sure to have them calibrated regularly. If relative humidity falls below 45% at any time, it will be necessary to use a high-powered non-misting humidifier to increase the humidity in the immediate area of the printer.
Also, keep in mind that it will be much easier to control the environment in a small area rather than a large one.