OPERATION (continued)
7
WATER HEATER
Water temperature is sensed by a
thermobulb inserted into the water tank. This
temperature signal is fed to the thermostat,
which controls line power to the heating
element.
The setpoint temperature is adjustable at the
thermostat.
The element is protected from over-
temperature by a hi-limit thermostat.
WATER FLOW
POUR-OVER FEATURE
Pouring any amount of cold water into the
pour-over opening and into the basin pan
forces an identical amount of hot water out
of the tank and through the spray head into
the brew chamber.
AUTOMATIC OPERATION
Pressing BREW button energizes the
solenoid valve, allowing water from an
external water supply to ow into the basin
pan and then into the hot water tank. This
forces an identical amount of hot water out
of the tank and through the spray head into
the brew chamber
The solenoid uses a ow control device so
that ow is consistent between 20 p.s.i. and
90 p.s.i.
Length of time the solenoid is open is
controlled by the timer.
HOT WATER FAUCET
The faucet water coil is submerged in the
hot water tank and draws heat from the brew
water. Water going to the water coil is not
controlled by the solenoid valve.
The faucet is at supply water pressure any
time the faucet shut-off valve is OPEN.
Fig. 6 Water Flow Diagram
Fig. 5 Heat Control Diagram
IL1654
HI-LIMIT
THERMOSTAT
THERMOBULB
HEATER
ELEMENT
MANUAL
POUR-OVER
MANUAL
POUR-OVER
BASIN
PAN
BASIN
PAN
FAUCET
SHUT-OFF
VALVE
FAUCET
BYPASS
FAUCET
BYPASS
SOLENOID
SOLENOID
FAUCET
TANK
WATER
COIL
HOT
WATER
BREW
BREW
TANK
TANK
THERMOSTAT
2M-75804-611 Koffee-King 8900 Series Brewer
2M-75804-611 Koffee-King 8900 Series Brewer
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