Bunn TU3 Operating & Service Manual page 12

TROUBLESHOOTING (cont.)
PROBLEM
Spitting or excessive steaming
Drip-out time too long
Dripping from sprayhead
Water flows into tank continuously
(ON/OFF Switch "ON")
Water flows into tank continuously
(ON/OFF Switch "OFF")
PROBABLE CAUSE
1. 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 ini-
tiate corrosive reactions resulting
in serious leaks.
2. Control Thermostat
1. Funnel Tip
1. Syphon System
2. 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 ini-
tiate corrosive reactions resulting
in serious leaks.
3. Brew Solenoid Valve
1. Brew Timer
1. Brew Solenoid Valve
Page 12
REMEDY
Inspect tank assembly for excessive
lime deposits. Delime as required.
Refer to Service - Control Thermo-
stat for testing procedures. See
page 20
The brew funnel should be cleaned
thoroughly before each brew cycle
to lessen the chance of tea leaf par-
ticles clogging the drip-out tip.
The brewer must be level or slightly
lower in front to syphon properly.
Inspect the tank assembly for ex-
cessive lime deposits. Delime as
required.
Refer to Service - Brew Solenoid
Valve for testing procedures. See
page 16
Refer to Service - Brew Timer for
testing procedures. See page 16 or
18
Refer to Service - Brew Solenoid
Valve for testing procedures. See
page 16
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