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SERVICING INSTRUCTIONS - ELECTRICAL
FUNCTION
1. Pressing the POWER key energizes the unit. The
POWER LED will glow whenever the unit is ON.
2. Automatic fill is accomplished via a FILL SOLENOID
(32) and a WATER LEVEL PROBE (7). The probe
senses ground through the water in the tank. When the
water level falls below the probe and ground is no longer
sensed, the CONTROLLER (20) energizes the fill
solenoid (32) until the water level again reaches the
water level probe.
3. Pressing any VOLUME key selects that pre-programmed
volume.
4. Pressing the BREW key begins the brew cycle.
Pressing the CANCEL key at any time during the
brew cycle terminates the brew. The BREW SOLENOID
(18) is energized by the CONTROLLER (20) for a time
determined by the BREW TIME setting.
A second brew can be started only after the brew time
plus the DRIP OUT time has elapsed.
5. Brew water temperature is controlled via a WATER
TEMPERATURE SENSOR (3) and a HEATING
ELEMENT (15) controlled by a TRIAC (17) electronic
switch. The element is energized according to the
sensed water temperature and the BREW TEMP setting.
An over-temperature condition will trip the HI-LIMIT
THERMOSTAT (4), de-energizing the heating element.
Note: On 120 volt units, hi-limit will automatically reset
once the tank has cooled by approximately 30ºF. On
240 volt units and dual voltage units, the hi-limit must be
manually reset by pressing the red button after the unit
cools.
6. The unit will revert to the energy-saver mode some
time after the last brew, based on AFTER HOURS TIME
setting.
WARNING:
RISK OF INJURY
The following servicing sections
are for operator reference only.
All servicing and/or repairs must
be performed by a qualified
technician
Reset Hi-Limit Thermostat
240 V & Dual Voltage Units
14