Bunn U3A - Manual (Page 12)

Page 12
TROUBLESHOOTING (cont.)
Coffee reservoir overflows
Brewer is making unusal noises
PROBABLE CAUSE REMEDY
1. Coffee reservoir not completely
empty before a brew cycle was
started.
2. Timer
3. Pump - Flow Rate
1. Plumbing lines
2. Water supply
3. Tank Heater(s)
Be sure coffee reservoir is empty
before brew cycle is started.
Refer to Service -Timer for test-
ing procedures. See page 26 or 28
Check pump flow rate with a watch.
Pump flow rate should be approxi-
mately 24 ounces in 15 seconds.
Be sure pump assembly is free of
any obstructions.
Plumbing lines should not be rest-
ing on the counter top.
(A) The brewer must be connected
to a cold water line.
(B) Water pressure to the brewer
must not exceed 90 psi (620 kPa).
Install a regulator if necessary to
lower the pressure to approxi-
mately 50 psi (345 kPa).
Remove and clean lime off the
tank heater. See page 25
PROBLEM
10060.3 070102