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Select solenoid output on back of circuit board. For 24 V AC solenoid,
slide switch toward edge of circuit board. For DC, slide toward
center.
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Program PERIODIC, FLUSH, and DWELL times on rotary switches.
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Adjust PD gauge to filter's recommended pressure differential setting.
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A backwash cycle can be initiated manually, by PD, or by the PERIODIC
time setting. Any backwash start resets the periodic time.
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PD switch must make contact continuously for 30 seconds before it
can start a cycle. When PD is activated, display shows I/PD (Idle
with PD) and PD Led is on. When three consecutive backwashes triggered
by PD are completed, the alarm output comes on and display flashes
PD ALARM. To reset alarm, press button for one second while controller
is in IDLE.
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There is a three digit backwash counter on the display. To reset
the count, press the COUNTER RESET button for one second while in
IDLE.
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Whenever the output fuse is blown, the display will show !FUSE!
and the PD and DWELL lights flash. To reset, turn off power, and
replace fuse.
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The fuse for the electronics is between the front panel and circuit
board. To replace, remove the front panel and replace with a 1 amp
5x20 mm fuse. This fuse rarely needs replacement, but is available
at Radio Shack if needed.
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The master valve output is marked M on the terminal block. It comes
on at the start of each backwash to close a field valve to maintain
sufficient backwash water pressure, and goes off when the controller
returns to IDLE.
-
During power failure, controller retains the backwash count and
resumes with tank that was backwashing prior to power failure.
CAUTIONS
