Salt Bath 709 / 718 / 818
Installation and Operating Manual
North American Model
June 2019
Page
24
of
36
Pulling Your Work-Piece from the Salt Bath
Once your work-piece has remained in the salt bath for the desired period of time it is then removed for further processing. Keep in mind that the items removed
from the salt bath are very hot as they are the temperature of the molten salt.
Before pulling your work piece, it’s best to have the TAP control rotated down to the vertical position. When the TAP control is at the vertical position it is protected
from dragout by the control panel drip shield.
When removing your work-piece you will get a bit of dragout. Dragout is basically some molten salts that remain on the work piece. This dragout will tend to drip off
as the work-piece is removed. It’s for this reason that we provide the drip shields on both the lid and control panel.
Dragout is very hot and if allowed to drip onto a combustible surface it creates a fire hazard. As mentioned in the cautions, the supporting surface of the salt bath kiln
should be constructed of a non-combustible material.
We would suggest that you use care to avoid allowing dragout to run down the outside of the salt pot. The refractory fiber gasketing material tends to stop the salts
from reaching the chamber but it can only do so much. The issue is that molten salt within the chamber tends to destroy the firebrick over time. The floor and walls
are replaceable in this event.
Shutting Down the Process
When shutting down the salt bath heat treat kiln we highly recommend that you remove the Immersion Thermocouple from the salt bath before the salt solidifies.
Our testing indicated premature thermocouple failure if we left it in the salt as it cooled. It tended to fail (break) right at the level of the salt.
Throw the control power switch, located on the top rear of the control panel, to the Off position. The display on the TAP will go dark.
Keep in mind that the salt, salt pot and kiln will remain hot for some time following shutdown. Use care when working around the kiln.
Cover the top of the salt pot with the supplied 12” x 12” x 1” refractory fiber. Use a dust mask and gloves when handling the fiber as it will create some dust. The fiber
prevents foreign material from entering the pot during periods of non-use.
Refractory Fiber Placed over the Salt Pot
Replacement Part #06423.300
