Operating instructions

PROGRAMMING PROCEDURES (continued)
The pulse feature will be active
only if it has been programmed.
See page 13.
The brewer will calculate the
number of seconds for the full
brew and display it on the LCD
to begin the brew. It will also
calculate how many pulse
cycles are required to complete
the brew. (If a final partial "Pulse
Valve On" is required this will
also be calculated
automatically.)
Vol
total
= (T
bre w
x R
spr ay h ead
) +
(T
byp ass
x R
bypass
)
or
Total delivered volume is equal to:
Brew Valve Time times
Sprayhead Flow Rate
Pl us
B ypass Val ve Ti m e ti mes
Bypass Flow Rate
Pulse Feature Operation:
When the pulse brew begins, the brew valve will be opened for
the number of seconds programmed for "Initial Valve Time"
(Init Vlv Time). The val ve will then cl ose for the number of
seconds in "Pulse Delay", then open for the number of seconds
in "Pulse Valve On". The pulse cycle (Pulse Delay plus Pulse
Valve) will be repeated conti nuously until the brew valve has
been opened for the time programmed as "Total Valve ".
Water Outflow (Delivery) Rates:
The outflow rate of water from the sprayhead is required to
calculate valve time for different volumes. Sprayhead outflow
rates are based on the standard 64-ounce coffee brew requiring
approximately 117 seconds of the brew valve being open. This is
an outflow rate of approximately .50 ounces per second.
To calculate Total Valve time, the total ounces required should be
divided by .50 oz/second. Each brewer may have a slightly
different flow rate based on whether the brewer is level, scale
build up on lines, etc. Minor adjustments may be required to get
precise volume.
Bypass Valve System:
Access the Bypass System from the "Brew Settings" menu,
"Total Valve" sub-menu (same as Pulse Brew).
1. Bypass delay: Number of seconds after brew starts valve will
open.
2. Bypass Valve Time: Number of seconds valve is on.
3. Bypass Flow Rate is approximately 0.27 oz/seconds.
14
675 p/ n 74346 SS-2 Programming Manual