Operating instructions

VENTILATOR HOOD
15
HOOD SECTION - TROUBLESHOOTING SUGGESTIONS (continued)
SYMPTOM POSSIBLE CAUSE SUGGESTED REMEDY
Vent fan working OK, but amber
“REPLACE PREFILTER” light ON.
Prefilter is at end of service life Replace prefilter
Vacuum Switch VS3 damaged Replace vacuum switch VS3
“REPLACE PREFILTER” light
turns on some of the time.
Pre-filter frame not hooked in
position at top
Hook metal pre-filterframe at top
to prevent air blowing around filter
Pre-filter position switch SW1
misadjusted or damaged.
Check switch SW1, adjust or
replace
Prefilter is nearing end of service
life
Replace prefilter
Filter pack nearing end of its
service life
Replace filter pack
Filter pack vacuum switch VS2
lines restricted or switch damaged.
Check switch VS2, repair vacuum
lines or replace switch.
Vent fan not operating and buzzer
is sounding.
Appliance newly installed and
Ansul® system not yet charged.
Check status of Ansul® system at
rear of unit, if fired, call Ansul®
Service Distributor for set-up.
Ansul® system has been set off by
overtemp condition, or manual pull
station has been activated.
Check status of Ansul® system at
rear of unit, if fired, call Ansul®
Service Distributor for
replacement of fire suppression
agent and propellant. If fuse link
has been activated, it must be
replaced prior to re-cocking the
Ansul® system.
Vent fan not operating.
Buzzer silent.
Green “POWER” light ON.
Amber “CHECK FILTER” light and
red “SERVICE REQUIRED” light
ON.
Grease baffle not installed Install grease baffle.
Grease baffle position switch SW2
misadjusted or damaged.
Check switch SW2, adjust or
replace
“REPLACE FILTER PACK” light
ON.
SV509 SvcManual WVOC-G136