Bunn Single Operating & Service Manual page 13

TROUBLESHOOTING (cont.)
Problem
Weak beverage (cont.)
Brewer is making unusual noises.
Probable Cause
4. Funnel loading
5. Water temperature
1. Solenoid (Inlet)
2. Plumbing lines
3. Water supply
4. Tank heater
5. Contactor
Page 13
Remedy
The BUNN paper filter should be
centered in the funnel and the bed
of ground coffee leveled by gentle
shaking.
Empty the server, remove its cover,
and place the server on the warmer.
Place empty funnel over the server
entrance, with ON/OFF switch in the
"ON" position press the start switch
and release it. Check the water
temperature immediately below
the sprayhead with a thermometer.
The reading should not be less than
195°F(91°C).
The nut on back of the solenoid
must be tight or it will vibrate during
operation
Plumbing lines should not be resting
on the counter top.
(A) The brewer must be connected
to a cold water line.
(B) Water pressure to the brewer
must not be higher than 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.
Check for low voltage.
27038 030101