Bunn Dual TF DBC User Manual download pdf (Page 49)

Page 49

TROUBLESHOOTING (cont.)

Problem

Possible Cause

Troubleshooting Procedures

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 ﬂ ow arrow must be

pointing towards the brewer.

(B) Remove the strainer 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. Turn the

valve on for 30 seconds and collect

the water dispensed from the spray-

head. Repeat the test several times

to conﬁ rm 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. Turn the

valve on for 30 seconds and collect

the water collected from the bypass

opening. Repeat the test several

times to conﬁ rm 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 ﬁ ttings, tubing,

valves and sprayhead.

3. Electronic control board

1. Strainer

2. Improper water pressure

3. Brew Valve

4. Bypass Valve

5. Lime buildup

Spitting or unusual steaming from

sprayhead or air vents. (Water too

hot) (cont.)

Inconsistent beverage level in

server.

35058.1 071205

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