We start our units within 24 hours of a water wash and hold at FSNL for 10minutes to blow any residual water out prior to closing the bleed valves. there should be low point drains you can remove in the bleed piping to remove additional trapped moisture.
Ankas suggestion to select FIRE will dry any remaining moisture prior to acceleration (in addition to the 1minute warmup. I dont think it will hurt the unit but watch for creeping exhaust temps at low speeds (about 400 rpms).