Bunn ITCB Operating & Service Manual page 76

TROUBLESHOOTING (cont.)
PROBLEM
Brewer is making unusual noises.
PROBABLE CAUSE
1. Solenoids
2. Plumbing lines
3. Water supply
4. Tank heaters
Page 76
REMEDY
The mounting screws on the so-
lenoids must be tight or they will
vibrate during operation
Plumbing lines should not be resting
on the countertop.
The brewer must be connected to
a cold water line. Water pressure
to the brewer must not be higher
than 90 psi (620 kPa). Install a
regulator if necessary to lower the
working pressure to approximately
50 psi (345 kPa).
Remove and clean lime off tank
heaters.
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