Bunn RT Coffeemaker User Manual


 
Page 10
TROUBLESHOOTING (cont.)
Problem
Spitting or unusual steaming from
sprayhead.
Inconsistent beverage level in de-
canter.
Consistently high or low beverage
level in decanter.
Dripping from sprayhead.
Probable Cause
1. Control Thermostat
2. 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.
1. Flow control
2. Improper water pressure
3. Syphon system
1. Brew Timer adjustment
1. Syphon system
2. Solenoid Valve
Remedy
Refer to Service - Control Thermo-
stat for testing procedures. See
page 16.
Inspect the tank assembly for exces-
sive lime deposits. Delime as re-
quired.
(A) Direction of flow arrow must be
pointing away from the solenoid.
(B) Remove the 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).
Water should flow freely from the
sprayhead for approximately twenty
seconds after the brew solenoid has
shut-off and then stop flowing
abruptly. The brewer must be level
from front-to-back to syphon prop-
erly.
Adjust the brew timer as required to
achieve the recommended 64 oz for
each brew cycle.
Water should flow freely from the
sprayhead for approximately twenty
seconds after the brew solenoid has
shut-off and then stop flowing
abruptly. The brewer must be level
from front-to-back to syphon prop-
erly.
Refer to Service - Solenoid Valve for
testing procedures. See page 24.
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