Existing fire alarm manual fire alarm boxes, Fire Department communication jacks, and signaling systems shall be maintained in place and active. The foregoing items shall be clearly marked with signs containing lettering which is a minimum of 3" high x 1/2" wide on a contrasting background. If the foregoing items are covered by plastic, each device shall be surrounded by a square of red duct-type tape. In addition, a cutting device, also surrounded by a square of red duct-type tape, shall be kept immediately adjacent to the device.