VEN
T
ILATOR HO
OD
HOOD SECTION - VACUUM SYSTEM
11
SV504 SvcM
anual W
V
-4H(R
W
)
SWITCH FUNCTION
VS1
PRE-FILTER POSITION MONITOR
Unit will not function unless a pre-filter
is properly installed, as sensed by the
pressure drop across it. Pressure drop
across the pre-filter must exceed setting
before cooking appliance is energized.
Insufficient pressure drop will illuminate
"
CHECK FILTER
" indicator.
VS2
FILTER PACK ALERT
Will
illuminate
"
REPLACE FILTER PACK
"
indicator if pressure drop across the filter
pack
exceeds
setting.
VS3 PRE-FILTER
ALERT
Will
illuminate
"
REPLACE PRE-FILTER
"
indicator
if
pressure drop across the pre-
filter
exceeds
setting.
VS4
AIR FLOW MONITOR
Pressure drop must exceed setting before
cooking appliance is energized. As filters
become plugged, airflow decreases.
Beyond the useful life of the filters, air flow
will be insufficient to maintain the required
pressure
drop,
which
will shut-down
ventilator fan and cooking appliance and
illuminate
"
SERVICE REQUIRED
"
indicator.
IMPORTANT:
Vacuum switch settings are factory set, and are not
adjustable.
PLENUM PORT
(AFTER FILTER PACK)
CABINET PORT
(BEFORE FILTER PACK)
FAN
PORT A
PORT B
PORT B
PORT C
PORT C
PORT C
PORT A
VS1
VS2
VS4
VS3
FAN
GREASE
BAFFLE
PRE-
FILTER
FILTER
PACK
FAN
AMBIENT
PRESSURE
PRESSURE
DROP
ACROSS
BAFFLE
PRESSURE
DROP
ACROSS
PRE-FIL
TER
PRESSURE
DROP
ACROSS
FIL
TER
P
ACK
PRESSURE
RISE
FROM
FA
N
AIR FLOW
SWITCH
VS1
SWITCH
VS2
SWITCH
VS4
SWITCH
VS3
