The board shall make an award promptly upon termination of the hearing. The award shall dispose of all claims for relief and shall be substantially in the form set forth in Rule 1312. If damages for delay are awarded under Rule 238, the amount shall be separately stated. The award shall be signed by the arbitrators or a majority of them. A dissenting vote without further comment may be noted thereon. The award shall be filed with the prothonotary immediately after it is signed.