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American Metal Ware
®
P400GNB-E
Adjustments (cont.)
Bypass Adjustment
(Refer to Figure C)
The bypass valve adjusts the amount of water that bypasses coffee grounds and dilutes the final brew. The
factory setting is no bypass. Bitter coffee is brewed when the amount of ground coffee is too small. Therefore, if
your coffee is brewing too strong, it is better to adjust the bypass valve instead of reducing the amount of coffee.
NOTE
: Always adjust bypass before adjusting brew timing because bypass affects brew rate.
To Adjust the Bypass:
1) Turn off electrical power to the brewer and remove the upper front panel and shield.
2) Locate the bypass valve to be adjusted. The bypass valve is located to the right and in front of the brew tee.
3) Open the valve by turning the valve handle counter-clockwise to the desired setting. (Refer to the information
below.)
Bypass Setting
Bypass: % Of Total Brew
Closed
0
1 revolution
8
2 revolutions
12
3 revolutions
22
4 revolutions
33
4) Measure the bypass setting:
a) Remove the brew basket.
b) Place an empty shuttle (with lid removed) under the sprayhead.
c)
Place a measuring cup under the bypass outlet.
d) Press Start and brew water for about 30 seconds or until the measuring cup is almost full.
e) Record the amount of water in the bypass measuring cup.
f)
Add the water from the measuring cup to the shuttle; measure the total volume and record.
Bypass % is calculated as:
Bypass % = (Bypass volume from measuring cup/total volume in shuttle) X 100
5) Adjust the bypass valve setting and repeat the measuring process until the valve is set as desired.
Figure C
