Bunn dual sh dbc Specifications download pdf (Page 45)

Page 45

TROUBLESHOOTING (cont.)

Problem

Possible Cause

Troubleshooting Procedures

29877 022509

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 previous procedure

for testing triacs. If the voltage

measured 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 34.

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 34.

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.

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