Bunn GMB-PS Coffeemaker User Manual


 
Page 12
TROUBLESHOOTING (cont.)
PROBLEM
Dry coffee grounds remain in the
funnel
Brewer is making unusal noises
PROBABLE CAUSE
1. Funnel Loading
1. Solenoid Valve
2. Plumbing Lines
3. Water Supply
4. Tank Heater
REMEDY
The BUNN
®
paper filter must be
centered in the funnel and the bed
of grounds leveled by gently shak-
ing.
The nut on the solenoid must be
tight or it will vibrate during op-
eration.
Plumbing lines should not resting
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 working pressure to ap-
proximately 50 psi (345 kPa).
Remove and clean lime off the
tank heater. See page 19
27479 121500