Despatch Stackable LCC/LCD-4 - Manual (Page 39)

Stackable LCC/LCD Oven Owner’s Manual O PERATION
Version 1.1 39
Copyright © 2012 by Despatch Industries.
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Figure 16. Nitrogen Flowmeter.
5.3.4. Sequence of Operation for Ovens Equipped for Inert Atmosphere
Oven
1. After starting the oven (Section 5.3.1), the Protocol 3 controller initializes.

Refer to the Protocol 3™ Controller Owner’s Manual for more
information on programming event outputs.
a. The oven should be idle, empty, with the door closed and awaiting
the next lot for processing.
b. The Protocol 3 Controller should not be running a profile.
c. Make certain the nitrogen flow meter is in the OFF position, that
is, fully clockwise ( Figure 16 ).
2. Open the oven door.
3. Place the product on the shelf in the oven.
4. Close the oven door.
5. 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.
6. The first segment of the program is the PURGE MODE.
a. Set the nitrogen flow meter (Figure 16) to the desired setting (Table 6).
b. This program energizes the purge solenoid valve.
Table 6. Desired Oxygen Concentration.
7. The second segment is the MAINTAIN MODE:
a. The purge solenoid valve is first de-energized and then re-energized to maintain the
nitrogen level to less than the purge level.
b. Adjust the Nitrogen Maintain needle valve at rear of oven (Figure 17). Leave the
maintain valve energized as long as the nitrogen level is maintained (Table 6).
Oven Model Mode < 100 PPM <1000 PPM
LCC1-16
Purge 150 scfh 125 scfh
Maintain 75 scfh 65 scfh
LCC1-51
Purge 200 scfh 175 scfh
Maintain 160 scfh 140 scfh