Bunn Single SH DBC* (with Smart Funnel) Owner's Manual
Page 44
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TROUBLESHOOTING (cont.)
Problem
Possible Cause
Troubleshooting Procedures
3. Electronic control board
1. Strainer/flow control (.750 GPM)
2. Improper water pressure
3. Brew Valve
4. Bypass Valve
5. Lime buildup
Perform the above procedure for
testing triacs. If the voltage mea-
sured is very low or zero, then
substitute a control board known to
be in good working order.
(A) Direction of flow arrow must be
pointing towards the brewer.
(B) Remove the strainer/flow control
and check for obstructions. Clear or
replace.
Check operating water pressure to
the brewer. It must be between 20
and 90 psi (138 and 620 kPa).
Test the Brew Valve. Refer to Testing
Individual Components on page 33.
Turn the valve on for 30 seconds and
collect the water dispensed from the
sprayhead. Repeat the test several
times to confirm a consistent volume
of dispensed water. If not consistent,
check the valve, tubing and spray-
head for lime buildup.
If bypass is being used on the
inconsistent brewing recipe, test
the Bypass Valve. Refer to Testing
Individual Components on page 33.
Turn the valve on for 30 seconds
and collect the water collected
from the bypass opening. Repeat
the test several times to confirm
a consistent volume of dispensed
water. If not consistent, check the
valve, tubing and bypass opening
for lime buildup.
Inspect for lime buildup that could
block the tank, tank fittings, tubing,
valves and sprayhead.
Spitting or unusual steaming from
sprayhead or air vents. (Water too
hot) (cont.)
Inconsistent beverage level in
server.