Coltene SciCan BRAVO G4, Technical & Service Manual

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Sterilizers Bravo G4
- TECHNICAL MANUAL
32
FUNCTIONING EN
4.10. DISCHARGE
At the end of the PROCESS cycle, the DRAINAGE phase starts to allow draining all the steam present in the
chamber, with a vacuum decrease to the value of - 0.80 bar.
As for previous VACUUM DECREASE phases, the DRAINAGE includes a first spontaneous depressurisation that
exploits the pressure generated by the steam and that only requires the control of drainage solenoid valves EV1 and
EV3.
To complete the DRAINAGE until reaching the value of 0.50 bar, the decrease continues by means of the vacuum
pump and the simultaneous activation of solenoid valve EV4.
In this phase, activations of solenoid valve EV2 are required to balance the pressure value inside the hydraulic circuit
and facilitate the activation of the vacuum pump.
DRAINAGE - 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
Hydraulic Circuit
pressure compens.
On
closed
On
open
Off
closed
On (1)
Off
closed
ON OFF ON ON OFF
Direct steam
drainage
On
closed
Off
closed
Off
closed
Off (2)
Off
closed
ON OFF ON ON ON
Direct condensate
drain
On
closed
Off
closed
On
open
Off (2)
Off
closed
ON OFF ON ON OFF
Decrease from 0.10
to - 0.80 bar
Off
open
Off
closed
On
open
On (1)
Off
closed
ON OFF ON ON OFF
134°C B Cycle
-
4 mins.
(ROW versions only)
132°C/270°F Hollow Wrapped Cycle - 4 mins.
(US/CA versions only)