Settings And Adjustments - Fetco CBS-18 User Manual

Caution! Always unplug or disconnect power to the brewer before changing any settings or adjustments.
All settings and adjustments are made on the control board, which is accessible from the back of the unit. (See
the control board diagram.) To remove the cover, remove 6 screws from the back and 2 screws from the top.
Dispense System
The CBS-18 features a system which dispenses a factory calibrated amount of water completely before refilling
the tank. This amount of water (1.8 or 1.5 liters) is determined by the distance between the water level probe
and the dispense tube. The water tank will not refill until the brew cycle is finished and the dispense valve has
closed.
The volume of water dispensed is not adjustable.
Brew Time (bottom dial)
The brew time is adjustable from 2 to 12 minutes and is factory set at 3 minutes. The brew
time always defaults to the nearest full minute on the dial.
The brew time must be set long enough to dispense the full volume of water, however, a
setting that is longer than necessary will delay the next brew cycle. See the next section,
Pulse Feature, for a full explanation.
Pulse Feature (top dial)
The optional pulse feature allows the spray of water over the coffee bed to cycle on and off
throughout the brew cycle. The setting is made on the top dial on the control board,
labeled "ON TIME". The total pulse cycle is 30 seconds in length.
Examples:
1.) The factory setting, 20 seconds, will give 20 seconds of spray over followed by
a 10 second pause.
2.) A setting of 15 seconds will give 15 seconds of spray over followed by a
15 second pause.
3.) A pulse setting of 30, the maximum, will give a constant spray of water
throughout the brew cycle. In other words, no pulse at all.
The Pulse and Brew settings must be synchronized so that the dispense valve is open long
enough to dispense all of the brew water, without being open longer than is necessary.
The brew setting is on the bottom dial of the control board.
Use the following chart to determine the proper settings.
On Time Setting (Pulse)
Brew Time Setting (minimum)

Settings and Adjustments

5 sec.
12 min.
10 sec. 15 sec.
6 min. 4 min.
8
Factory
Settings
25 sec.
20 sec.
3 min.
3 min.
30 sec*.
2 min.
* No pulse