Despatch LND Series with Protocol Plus - Manual (Page 20)

12
Pre-Startup Checklist
• Know the system. Read this manual carefully. Make use of its instructions and
explanations. Safe, continuous, satisfactory, trouble-free operation depends
primarily on your understanding of the system and your willingness to keep all
parts in proper operating condition.
• Check line voltage. Voltage must correspond to nameplate requirements of
motors and controls. Refer to the section on power connections in the
INTRODUCTION of this manual.
• Fresh air and exhaust. Do not be careless about restrictions in and around the
fresh air and exhaust openings and stacks. Under no condition permit them to
become so filled with dirt that they appreciably reduce the air quantity. The
proper ventilation clearances should be fulfilled at all times. Refer to the Set-up
instructions in this manual.
• Helpful hints
For drying ovens, open vent to prevent buildup of moisture.
For sample heating, close the vent when no ventilation is required.
Startup
For fastest oven heat-up time, close the fresh-air vent. After the desired temperature is
reached, the vent may be adjusted as needed.
1.
Start Fan.
a. Open oven door.
b. Press Power switch to the On position. You will hear the recirculating fan
start.
c. Shut oven door.
d. Check that the control display turns on.
2.
Adjust nitrogen flow rate.
a. Determine the desired oxygen level.
b. Use the following chart to determine the time to achieve the desired
oxygen level.