LG · Laundry · DLEX4000B · Owner's Manual
Wash the lint filter in warm, soapy water and allow it to dry thoroughly before reinstalling it.
Source: LG DLEX4000B Owner's Manual, extracted pages 47-48
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Routine maintenance and lint filter care
Keeping the lint filter and exterior clean helps the dryer run safely and efficiently. Follow these care steps regularly.
Before you clean - Unplug the appliance before cleaning. - Do not use harsh chemicals, abrasive cleaners, solvents, methylated spirits, or similar products on the appliance. These can damage the finish. - Never use steel wool or abrasive cleansers on any part of the dryer.
LG DLEX4000B Owner's Manual, extracted pages 47-48Troubleshooting by symptom: drying results and wrinkles
Use the guidance below when clothes are drying unevenly, coming out wrinkled, feeling staticky, or still have damp spots after a cycle. These tips focus on load size, fabric type, dryness settings, and how long items stay in the dryer.
Drying time is not consistent Drying time can vary from load to load. This is normal when any of the following changes: - load size - fabric type - how wet the clothes are - the condition of the lint filter
LG DLEX4000B Owner's Manual, extracted pages 52-53This answer is only published when it has a reviewed answer status and a source citation back to the manual text.