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

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OPERATIONAL SAFETY
Warning Potential Electrostatic Charging Hazard : Operator actions can load the oven with
potentially hazardous electrostatic charge. See the instructions on this page.
Avertissement Risque potentiel de charge électrostatique : les actions de l'opérateur peuvent
charger le four avec une charge électrostatique potentiellement dangereuse. Consultez les instructions ci-
dessous.
H
AZARDOUS
A
TMOSPHERES
P
RECAUTIONS
•
Catastrophic Electrostatic Discharge
: Operators and other personnel must avoid
behaviors that can generate static discharges or load the oven with a static charge. For
example, they should never rub a dry cloth on non-metallic oven surfaces.
•
Solvents used in the oven must be of ultra-high purity (99% for hydrocarbon-based
solvents).
•
Vacuum and Gas In Vent Ports Verifications
: Before powering the oven, verify all
oven vacuum and gas-in ports are either connected to a gas or vacuum supply line or are
capped. This helps prevent potential intrusions of outside vapors or gases into the oven
chamber.
•
Process Awareness: The operation processes described in your SOP must prevent
solvents or other flammables and combustibles from igniting in the oven chamber, vacuum
plumbing, and in the attached vacuum pump and pump exhaust. Specifically, operators
need to be aware of the following:
o The concentrations of ignitable vapors or gases present in the chamber during the
baking application and any cooldown period.
o Pressure changes that will take place in the chamber during the procedure.
o Any moisture released during the process. This can change the concentration of
vapors or gases and add heat to the oven chamber.
o Any possible release of energy from samples or products that can drive up the
oven chamber temperature during the baking application.
•
Temperature Interval : Oven operators must maintain a safe temperature interval
between the hottest spot in the oven chamber and the auto-ignition point of the solvent or
other combustible materials present in the chamber.
o See the
11T11T11T
Maximum Process Temperature
11T11T11T
topic page 25 for the lowest allowed
interval between the oven setpoint and the flammable material auto-ignition
temperature.
•
Shelving Temperatures: The shelving temperature must also be below the sublimation
temperature of solid materials in the chamber.
•
Process Log
: Oven operators should maintain a log of baking processes run, including the
setpoint temperature the oven is being operated at, vacuum level, and the type of solvent
or other approved hazardous material being used or extracted during the baking
application.