Atmosphere oven, Danger – Despatch LCC/LCD2-14-4 Oven Series with Protocol 3 User Manual
Page 43
LCC/LCD2-14 Series Oven
Owner’s Manual
O
PERATION
Version 1
43
Copyright © 2013 by Despatch Industries.
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Figure 19. Nitrogen Flowmeter.
5.3.5. Sequence of Operation for Ovens Equipped for LCC/LCD2-14 Inert
Atmosphere Oven
1.
After starting the oven (Section
), the Protocol 3 controller initializes.
Refer to the Protocol 3™ Controller Owner’s Manual for more
information on programming event outputs.
2. The oven should be idle, empty, with the door closed and awaiting the
next lot for processing.
3. The Protocol 3 Controller should not be running a profile.
4. Open the oven door.
5. Place the product on the shelf in the oven.
6. Close the oven door.
7. Run the desired profile with the Protocol 3 Controller.
a. Press
Select
until
Profile
is displayed.
Press Run at any time to activate the
Profile Mode.
b. Press
▲
or
▼
to display the desired profile.
c. Press
Run
to start the Profile Mode.
8. The first segment of the program is the PURGE MODE.
a. Set the nitrogen flow meter (Figure 19) to 300-350 scfh.
b. This program energizes the purge solenoid valve.
9. The second segment is the MAINTAIN MODE:
a. The purge solenoid valve is de-energized and the maintain solenoid is energized to
maintain the nitrogen level to less than the purge level.
b. Adjust the needle valve located in the front bottom of the oven (Figure 20). Leave the
maintain valve energized as long as the nitrogen level is maintained.
Danger!
Suffocation can occur in a nitrogen-atmosphere oven chamber if
it is not thoroughly purged with room air before a person goes
inside it.
Before entering an oven chamber run the oven for at least five
minutes with the nitrogen (or any other inert gas) turned off,
doors open and recirculation fan running.
Do not work inside oven with the doors closed if you have not
purged the chamber with nitrogen (or any other inert gas) first.