Bunn Single Operating & Service Manual page 11

TROUBLESHOOTING (cont.)
Problem
Water from tank is not hot (cont.)
Server warmer is not hot.
Spitting or unusual steaming from
sprayhead or airvent.
Inconsistent beverage level in
server.
Probable Cause
5. Triac assembly (Electronic)
1. ON/OFF switch
2. Warmer element
1. (A) Control thermostat (Electro/
mechanical)
(B) Control assembly (Elec-
tronic)
2. Triac assembly (Electronic)
3. Lime build-up
CAUTION - Tank and tank compo-
nents should be delimed regularly
depending on local water condi-
tions. Excessive mineral build-up on
stainless steel surfaces can initiate
corrosive reactions resulting in seri-
ous leaks.
1. Strainer/flow control (.330
GPM)
2. Improper water pressure
Page 11
Remedy
Refer to Service - Triac assembly
for removal and replacement.See
page 27
Refer to Service - ON/OFF switch for
testing procedures. See page 31
Refer to Service - Warmer element for
testing procedures. See page 40
Refer to Service - Control thermostat
for testing procedures. See page
20
Refer to Service - Control assembly
for testing procedures. See page 23
thru 27
Refer to Service - Triac assembly for
testing procedures. See page 27
Inspect the tank assembly for ex-
cessive lime deposits. Delime as
required.
(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 the operating water pressure
to the brewer. It must be between 20
and 90 psi (138 and 620 kPa).
27038 091900