Cascade Sciences CVO-5-EX Series, Руководство по установке и эксплуатации

Страница: 21 / 132

21 | P a g e
cascadesciences.com
|
Tel. 503 847-9047
INTRODUCTION
H
AZARDOUS
Z
ONES
M
AP
Zone 1:
Explosive concentrations of gases or vapors are frequently present during normal operations
inside the Zone 1 spaces of the oven chamber, KF-25 fitting, and vacuum system.
Zone 2: Any explosive concentrations of gases or vapors in the Zone 2 space surrounding the
oven, its KF-25 fitting, and the vacuum system are unintentional, infrequent, and short-lived –
typically the result of an accident, a hazardous materials leak, or a ventilation system failure.
Explosive concentrations are never present as a part of normal operations in the Zone 2 space.
Zone 2 Hazardous Zone Assessment:
The full extent of the Zone 2 hazard area around the
oven and vacuum system must be based on an assessment of your site . Assessment factors
include the site airflows, air exchange rate, and the characteristics of your HVAC or other climate
control system.
Zone 1
Zone 2
Map Key
Zone 2 extends approximately 3 feet (1 meter)
from the oven door. The Zone may extend farther
depending on the ventilation characteristics of your
workspace.
The KF-25 Fitting is a Zone 1 space.
Vacuum line connecting to the vacuum pump.