Adjustments; Operation - Grindmaster ICB-400 Operation And Instruction Manual

Operation (cont.)
Optional Features
Three options are available on this equipment; these options are available independently of each other. The fea-
tures are described below:
Pre-infusion:This option enables the brewer to wet the grounds and then have a dwell period before the brew
cycle is completed. This option causes the brew valve to open for a period of time, close for an equal period of time
and then open again for completion of the brew. The preset periods are, respectively, 15, 30 and 45 seconds for
the small, medium and large settings. After this no-dispense period, the valve re-opens to complete the remaining
82% of the cycle.
Low Temp, No Brew:This option inhibits the initiation of a brew cycle in the event that water temperature in the
tank is more than 5°F lower than the setpoint. In the event that the temperature is outside of the acceptable range,
the WATER HOT light will be Off. A brew cycle can only be initiated when the light is On if this option is employed;
attempts to initiate a brew when the light is off will be ignored by the controller.
Automatic Bypass:This option allows the brewer to provide for bypassing of the grounds only for the large portion
size by signaling a solenoid valve in the bypass circuit to open only when the large portion size is selected. The
bypass amount is set by regulating the flow through the standard manual bypass valve provided on all units (see
Bypass Adjustment).

Adjustments

!
DANGEROUS
COMPONENTS. ONLY QUALIFIED SERVICE PERSONNEL SHOULD MAKE ADJUST-
Components for adjustment of brew volume/brew timing and of temperature are located behind the small access
panel located in the right-side brewing alcove on ICB units and on the front panel on Columbia units. Adjustment for
bypass is under the top panel. To access these components:
1) Turn off electric power to unit at the main breaker assigned to the unit (or disconnect the cord where
applicable) when removing the top panel.
2) Remove the screws fastening the appropriate panel to the body.
3) Remove the panel.
Temperature Adjustment
Brew water temperature can be adjusted by turning the knob on the main controller located behind the controller
access panel. Temperature adjustment range is from 175°F to 202°F. Adjustment for temperature should be made
after measuring the temperature of the water dispensed from the brew head by the following procedure.
1) Remove sprayhead from brewer and set aside.
2) Place a container under the outlet.
3) Press START and, using a thermometer, measure the temperature of the water being dispensed.
4) If a higher temperature is desired, rotate the TEMPERATURE ADJUSTMENT knob clockwise. If a lower
temperature is desired, rotate the temperature adjustment knob counterclockwise.
5) If water temperature setting has been increased, wait until heater has cycled and then follow steps 3 and 4
again. If water temperature setting has been decreased, brew a large portion of water and repeat steps 3
and 4.
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WARNING: ELECTRIC SHOCK HAZARD!
ELECTRIC VOLTAGES ARE PRESENT NEAR
American Metal Ware
ADJUSTABLE
Brewers
®