Keurig B3000 Service Manual page 87

15. K-Cup® Sensor
(unblocked)
16. Brew tank
Thermistor @
ambient temperature
17. Pre-heat tank
Thermistor @
ambient temperature
18. 120 Hz Clock (60
Hz Power)
19. Heaters off
20. Brew Tank
Heating Element
power
21. Preheat Tank
Heating Element
power
22. Initial Air
Pressurization with
Water Pump,
Pressure transducer
23. Vent Valve opening
under low pressure
24. Full HWT air
Pressurization with
Brew Pump.
Pressure transducer
calibration
25. Half CWT
Pressurization by
sharing;
Vent Tubes
Vent Valve opening
under full over
pressure
26. CWT, Vent Tubes
Leaks
"15: CLOSE KCUP"
"MODULE: BR-HEAD"
"16: BREW TEMP"
"MODULE: HWT"
"17: PREHEAT TEMP"
" MODULE: HWT"
"18: 120 HZ CLOCK"
"MODULE: M-PCB"
"19: HEATER LOW
AMP?"
"MODULE: POWER"
R LED blinks
"20: BREW 12A?"
"MODULES: POWER,
HWT"
R LED blinks
"21: PRE 12A?"
"MODULES: POWER,
HWT"
R LED blinks
"22: CW PUMP.
CLAMP&PSI-M"
"MODULE: CWP, C-
PCB, LEAK"
R LED blinks
"23: VV OPEN LO-PSI"
"MODULE: CWT"
"24: BREW PUMP
7PSI?"
"MODULE: CWT,
LEAKS"
R LED blinks if 7psi
"25: VV OPEN HI-PSI"
"MODULE: CWT"
"26: CWT LEAK"
"MODULE: CWT,
LEAKS"
B3000 SERVICE MANUAL
60-200807-000, REV C
door. Ejection blocks
sensor!!
Heating Element on
for 3 seconds –
Verify 12A
Heating Element on
for 3 seconds –
Verify 12A
CWP on for 2
seconds. Verify
>0.25 psi
Vent Valve open for
2 seconds – Verify
<0.1 psi
Runs Brew Pump
until 7 psi. Checks
pressure drop below
.21 psi (7 psi - 3%)
over 5s. If pass, R
LED lights.
Opens VV.
(tanks equalize)
Wait 5 seconds –
check for pressure 3-
5 psi.
Checks pressure drop
below .21 psi (4 psi)
5% over 5 seconds
Lower the handle
Auto Cont. if OK
Auto Cont. if OK
Auto Cont. if OK
Press Right Button
if less than 1 amp
Press Right Button
if OK, Center Right
to repeat
Press Right Button
if OK, Center Right
to repeat
Clamp CWT vent
tube, add pressure
gauge. Press Right
Button when ready.
Auto Continue if
OK
Press Right Button
when lit and gauge
at 7 psi
Auto Continue if
OK
Auto Continue if
OK
87