Coltene SciCan BRAVO G4, Technical & Service Manual

Page: 30 / 116

Sterilizers Bravo G4
- TECHNICAL MANUAL
28
FUNCTIONING EN
4.8. 3rd PRESSURE RISE
Alternating vacuum decreases down to the value of - 0.80 bar with 2 pressure rises up to 1.00 bar ensures that the
residual air in the chamber is about 0.06% of the initial total amount.
Following the phases indicated above, the 3
rd
PRESSURE RISE starts, leading to the actual STERILIZATION
PROCESS, carried out at :
•
134°C/2.15 bar (ROW versions only)
•
132°C (270°F)/2.15 bar (US/CA versions only)
•
121°C(249.8°F)/1.10 bar (ALL versions)
depending on the type of cycle selected.
In this pressure rise phase, the activation conditions of the various components are the same as the previous ones.
3 st PRESSURE RISE - component activation status
ST
AT
U
S
EV1
High drain
(N.O.)
EV2
Air inlet
(N.C.)
EV3
Low drain
(N.C.)
EV4
Drain
deflector
(3V)
EV5
Chamber
air inlet
(N.C.)
FAN
W
AT
ER
PU
MP
- EV6
VA
CUUM
PU
MP
C
H
AMBER
T
U
BE
BUNDL
E H
EA
TI
NG
EL
EMEN
T
G
ENE
RA
TO
R
HE
AT
ING
EL
EMEN
T
Part 1
from -
°0.80
to 0.00
On
closed
On
open
Off
closed
On (1)
Off
closed
ON ON OFF ON ON
Part 2
from 0.00
to 2.14
On
closed
Off
closed
Off
closed
Off (2)
Off
closed
ON ON OFF ON ON
134°C B Cycle - 4 mins. (ROW versions only)
132°C/270°F Hollow Wrapped Cycle - 4 mins.
(
US/CA versions only)