The Dwyer Timer Board is where the timing can be adjusted for each solenoid. You can adjust the amount of
time between pulses (Time Off in se
c
onds) and how long each pulse will last (Time on in milliseconds). For
example, if the time off is s
e
t for 60 and the time on is set for 150, then the system would perform in the
following manner:
Power is applied to the timer board via the “Filters” toggle switch on the door of the control panel. (only active if
the fan is in operation).
The first output of the timer board will send out a 150 millisecond 120vac signal to the first solenoid enclosure.
The solenoid will open for 150 milliseconds allowing a small amount of air to pass through which allows air to
bleed off f
r
om the pilot port on the first pulse valve.
The first pulse valve opens for 150 milliseconds allowing a high volume of compressed air to fire down into the
cartridge filter.
A
ft
er 150 milliseconds has elapsed, the first output of the timer board will t
urn off
, clos
ing
the solenoid valve,
which blocks off the air bleeding out of the pulse
v
alve,
then
closes the pulse valve to prevent air from firing
into the cartridge filter.
The timer board then waits 60 seconds and then the next output of the board will repeat the steps listed above.
The process repeats until the last output is reached, and then starts back at the beginning.
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