A loom is a precise wooden frame under tension, and taking one apart wrong turns a project into a puzzle. Document the warp and tie-up first, then fold or disassemble it methodically.
Pro tip: Detailed photos of the threading and tie-up save hours; re-sleying a reed and re-threading heddles from memory is brutal.
Watch out: Do not force a rigid loom to fold or flex; you can crack the wood joints. Disassemble it instead if it does not fold.