Ansul® System - Wells WV-4HF Supplemental Service Instructions

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