Thru 27 - Bunn Single TF Operating & Service Manual

TROUBLESHOOTING (cont.)
Problem
Water from tank is not hot (cont.)
Spitting or unusual steaming from
sprayhead or airvent.
Probable Cause
2. (A) Control Thermostat (Electro/
mechanical)
(B) Control assembly (Electronic)
3. Contactor (Electro/mechanical)
4. Tank heater
5. Triac assembly (Electronic)
1. (A) Control thermostat (Electro/
mechanical)
(B) Control assembly (Electronic)
2. Triac assembly (Electronic)
3. Lime build-up
CAUTION - Tank and tank compo-
nents should be delimed regularly
depending on local water conditions.
Excessive mineral build-up on stain-
less steel surfaces can initiate cor-
rosive reactions resulting in serious
leaks.
Page 11
Remedy
Refer to Service - Control thermo-
stat for testing procedures. See page
20
Refer to Service - Control assembly
for testing procedure. See page 23

thru 27

Refer to Service - Contactor for test
procedures. See page 18
Refer to Service - Tank heater for
testing procedures. See page 36
Refer to Service - Triac assembly for
removal and replacement.See page
27
Refer to Service - Control thermo-
stat 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 exces-
sive lime deposits. Delime as re-
quired.
27118 100400