Hepa Filter Pressure Reading Worksheet; Door Seal; Table 10. Hepa Filter Pressure Reading Worksheet - Despatch LCC Series Owner's Manual

LCC_LCD1-16/51 Oven Owner's Manual

7.3. HEPA Filter Pressure Reading Worksheet

A B
Date Comments
Typical
Values
Filter first
installed

7.4. Door Seal

Check door seals are sitting properly and providing required sealing effect.
Check the gasket on the chamber door as follows.
1. Open the door.
2. Visually inspect the gasket sealing surface.
3. Squeeze the gasket between your fingers to check for damage and tears.
4. Close the door on a piece of paper at many points around the gasket. The
gasket should seal tight enough to require a slight pull to remove the
paper.
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Table 10. HEPA Filter Pressure Reading Worksheet.

C D
Pressure Pressure with 350
(inches SCFH nitrogen purge
of water)
1.5-2.5" above value
2-3"
in Column C
C244, 320207, REV B
E
Pressure with 220 Oven
SCFH nitrogen Temperature
maintain
0.3-0.8" above
60°C
value in Column C
F
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