Emergency Tempering Oven Glass Ejection

Emergency Tempering Oven Glass Ejection
Overview:
            The process for ejecting glass out of the tempering oven, in the case of an emergency.
Definitions:
Procedure:
 
Batteries

1. At the beginning of each shift, check the voltage on the line ejection batteries?
   1. The batteries should each have 12V.
2. Check the computer to make sure the battery charger is set to “auto”.
3. If the batteries have less than 12V, turn the charger from “auto” to “on”.
   1. Once the batteries reach their needed charge, turn the charger back to “auto”.

Hot Glass in the Oven

1. Hot glass can only be in the oven for about 1 minute before it starts melting on to the rollers. If the oven stops for any reason, the glass in the oven needs to be out within 1 minute.

If the tempering oven gets E-stopped or loses power momentarily.

1. If the oven is put into E-stop, quickly check why the E-stop was triggered.
   1. Reset the E-stop.
2. Clear all glass that is at the exhaust table.
3.  Raise the quench by turning the quench dial to “OPEN”
4. Press the red “ABORT” button.
5. Wait 5 seconds then press “ABORT” again to abort the second bed of glass.
6. As the glass comes out of the exhaust, allow the glass to fall to the floor.
   1. Do not try to catch the glass! The glass is extremely hot.
   2. Put the heat suit on if needed.
7. Once all beds have been ejected, preform a short shutdown.

If the tempering oven loses power for an extended period.

1. Clear the loading bed of any glass.
2. Turn the load clutch dial to “AUTO”.
3. Turn the emergency drive dial to “ON”.
4. Turn the oven drive dial to "OFF".
5. Allow the glass to run backwards out of the oven and onto the floor.
6. With a metal pole, shatter any glass left on the rollers.
7. Take care not to burn yourself on any got glass.
   1. Put the lines heat suit on if needed.