Abstract: The present arrangement includes a removable, sealable plate located over a port in the side of a vacuum furnace chamber, which port lies opposite a heat exchange device. The heat exchanger is mounted on guide devices to enable it to be slideably withdrawn from the furnace chamber without causing injury to any other furnace parts located within the vacuum furnace chamber, such as the hot zone. The removable, sealable plate has major apertures therethrough to permit coolant pipes (eq. water pipes) to pass therethrough. Such feedthrough coolant pipes are sealed to provide integrity for the vacuum condition of the furnace. In addition the present arrangement includes a second sealable, removable plate located on a bonnet device which houses a fan motor. The grease fittings for such a fan motor are elongated and are accessible when the second plate is removed.