Cascade Sciences CVO-5-EX Series, Installation & Operation Manual

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OPERATION
P
RE
-O
PERATION
S
AFETY
V
ERIFICATIONS
Prior to providing power or gas to the oven, the operator should verify the following.
1.
Verify the oven is safe to put into operation. Check the documentation service file if restoring
the oven to operation after a repair or other service. The file should indicate the oven was tested
by a qualified service technician and is safe to put into operation.
2.
Verify the vacuum and gas ports on the oven are either connected to a vacuum or gas supply
line or are capped. This helps prevent the workspace atmosphere from entering the oven chamber
when powered and heated.
3.
Verify and log the highest temperature to be run during the setup or baking application.
4.
Verify any hazardous substance that will be placed in the oven during a baking application
belongs to an allowed hazardous material group. This includes substances used to treat products or
samples.
5.
Check which gas supply is designated in the process SOP for backfilling the oven chamber.
•
The Vent valve control on the oven panel uses the Purge and Pressurize gas supply to
backfill the chamber.
•
The Backfill valve control flows gas from the Backfill gas-in port on the back oven to
backfill the chamber.
6.
Verify the Vacuum , Vent , and Backfill valve controls on the oven control panel are in the
closed position. If the oven has a side-mounted vacuum control valve, that valve must also be in
the closed position.
S
UPPLY
G
AS TO THE
P
URGE AND
P
RESSURIZE
S
YSTEM
Supply a flow of gas to the oven before supplying power. Note: The exact order of operation of
the following steps depends on your regulator type and gas system configuration.
•
Set the Purge and Pressurize gas supply regulator to provide 4.2 cubic feet per minute
(117.5 normal liters per minute)
of gas flow to the oven.
•
Start a flow of gas to the Purge and Pressurize Gas-In Port.