Despatch LND Series with Protocol Plus - Manual (Page 21)

13
c. Turn the nitrogen valve switch to the PURGE position for the time to
achieve oxygen level as determined in step 2b.
Figure 4. Oxygen Level vs. Time at Maximum SCFH Purge Flow
d. When the purge is complete, turn the nitrogen valve switch to the
MAINTAIN position.
e.
Use the charts on the next page to determine the MAINTAIN flowmeter
value to maintain the oxygen stabilization level.
f.
Adjust the MAINTAIN flowmeter to the value determined in step 2e.
3.
Operate the temperature control as desired by following the control operation
instructions that follow.
20
12
8
4
0
16
0 4 8 12 16 20 24 28 32