Shel lab SVAC9-2, Инструкция по установке и эксплуатации, Страница: 20 / 46

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INSTALLATION
Vent Specifications
•
The Cabinet Vacuum Port – 3/8 Inch (9.52 mm) OD
o
A vacuum supply may be connected to this port. The port evacuates chamber
atmosphere and is opened and closed by the Vacuum Valve control on the front
from of the oven.
o
The Vacuum Power Switch on the front control panel controls power to the NEMA 6-
20R supply outlet in the cabinet and is intended to power a vacuum pump.
•
The Cabinet Vent Port – 1/4 Inch (6.35 mm) OD
o
This intake vent allows external atmosphere back into the oven chamber when the
chamber Vent Valve control on the front of the oven is open.
o
Optional : An inert backfilling gas supply source may be connected to this port. The
maximum allowed pressure for a purge gas is 15 psi.
• KF-25 Fitting – Back of Oven
o
This large fitting is normally used to introduce potted (sealed) sensor probes into the
oven chamber for temperature display verifications and calibrations. Probes must be
inserted and secured prior to placing the chamber under vacuum.
o
A vacuum supply can be connected to the KF-25 flange for increased efficiency in
vacuuming down the chamber. However, the Vacuum Valve control on the front
control panel will not affect the level of vacuum and must be set to closed to prevent
atmosphere from entering the chamber through the Vacuum Port.