Bunn FMD-1 FMD-2 - Manual (Page 12)

12
TROUBLESHOOTING (CONT.)
PROBLEM
Dispenser is making unusual
noises
Excess dust
Display not lit
PROBABLE CAUSE
1. Plumbing Lines
2. Water Supply
3. Tank Heater
1. Fan
2. A) Hopper Drive Board - FMD-1
B) Control board - FMD-2
1. Lamp
2. Lamp Holder
3. Starter - Lamp
4. Ballast
REMEDY
Plumbing lines should not be rest-
ing on the counter top.
(A) The dispenser must be connected
to a cold water line
(B) Water pressure to the dispenser
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 37
Refer to Service - Fan for testing
procedures. See page 24
Refer to Service - Hopper Drive Board
for testing procedures. See page 27
Refer to Service - Control Board for
testing procedures. See page 20
Refer to Service - Lamp, see page 29
for lamp replacement.
Refer to Service - Lamp Holder for
testing procedures. See page 29
Refer to Service - Starter for testing
procedures. See page 30
Refer to Service - Ballast for testing
procedures. See page 19
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