Bunn CW-APS Operating & Service Manual page 13

TROUBLESHOOTING (cont.)
PROBLEM
Weak beverage
Dry coffee grounds remain in the
funnel
Brewer is making unusal noises
(CWT-APS, CWTF-APS, CWT-TS,
CWTF-TS, CWT-TSR, CWTF-TSR)
PROBABLE CAUSE
1. Filter Type
2. Coffee Grind
3. Sprayhead
4. Funnel Loading
5. Water Temperature
1. Funnel Loading
1. Solenoid
2. Plumbing Lines
3. Water Supply
Page 13
REMEDY
BUNN® paper filters must be
used for proper extraction.
A fine or drip grind must be used
for proper extraction.
A six-hole stainless steel spray-
head must be used for proper
extraction.
The BUNN® paper filter must be
centered in the funnel and the bed
of ground leveled by gentle shak-
ing.
Place an empty funnel on an empty
dispenser beneath the sprayhead.
Initiate a brew cycle and check the
water temperature immediately
below the sprayhead with a ther-
mometer. The reading should not
be less than 195°F. Adjust the
control thermostat to increase the
water temperature. Replace if nec-
essary.
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).
10690 021800