2-1. OPERATOR'S CONTROLS AND INDICATORS (CONT)
PRETREATMENT ASSEMBLY (CONT)
Rotary dial times backwash or flushing period. Can be
set to any time between 1 and 60 minutes. Bell
sounds when time is up.
MEDIA FILTER OK
When lit, shows that water pressure from media filters
is high enough. When not lit, shows that filters
When lit, shows that water pressure from cartridge
filter is high enough. When not lit, shows that
filter elements need to be changed.