Bunn STF User Manual

Page 12
TROUBLESHOOTING (cont.)
PROBLEM
Brewer is making unusal noises
(ST, STF, STA & STFA)(cont.)
Automatic refill will not operate
Beverage not staying hot in dis-
penser
PROBABLE CAUSE
3. Water supply
4. Tank heater
1. No water
2. Strainer/flow control
3. Solenoid valve
4. Liquid level control board or
level probe
5. Relay
1. ON/OFF switch
2. Warmer elements
REMEDY
(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 20
Check plumbing
A. Direction of arrow must be
pointing towards brewer.
B. Remove the strainer/flow con-
trol and check for obstructions.
Clean or replace.
Refer to Service - Solenoid Valve
for testing procedures. See page
18
Refer to Service - Liquid level con-
trol board or level probe for test-
ing procedures. See page 26
Refer to Service - Relay for test-
ing procedures. See page 28
Refer to Service - ON/OFF switch
for testing procedures. See page
17
Refer to Service - Warmer ele-
ments for testing procedures. See
page 29
29251 052500

Bunn STF Specifications

General

Brand	Bunn
Model	STF
Category	Coffee Maker
Language	English