Bunn Dual SH BrewWISE, Technical Training Manual

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Dual SH BrewWISE ® Training Manual
16
Since the brewer incorporates Pulse Brew technology, the brew valves and bypass valves will open and close up to
12 times during a brew cycle. During the brew cycle and the programmed drip out time the funnel lock solenoid will
be engaged to prevent the funnel from being removed. It is important to note that the control board supplies DC volt-
age to the funnel lock solenoid to prevent it from vibrating.
Coffee Holding System
The coffee holding system consists of:
Soft Heat •
®
server
Transformer •
Recti fi er •
Spring contacts •
The coffee holding system maintains the fi nished product at the desired temperature. The brewed coffee is stored in
the server utilizing Bunn Soft Heat
®
technology.
The brewer provides 24VDC to the Soft Heat
®
servers through contacts in the front of the machine. Line voltage from
the brewer is stepped down to 24VAC and then goes through a bridge recti fi er to convert it to DC. There is a 4amp
circuit breaker to protect the contacts.
Step-Down
Transformer
Recti fi er
Circuit
Breaker
Output
Receptacles