Keurig B3000 Service Manual page 88

27. HW Dispense valve
28. Transmit and receive
a "1" and "0"
through the coin IF
29. Done
Test 24 pressurizes the entire hot water part of the brewer, thus checking for leaks in:
• All vent line components from the tank through the VV.
• The HWT
• All fill line components from the HWT through the CWP. Tested open in 22
• All brew line components.
Test 25 pressurizes the cold water part of the brewer, thus checking for leaks in:
• The vent line from the CWT to the bin.
• The CWT
• The tube from the CWT to the CWP.
• The inlet valve and high pressure tubing. (to 4 psi)
Some components are not tested. The functionality was tested by manufacturing.
• Float valve
• CWT and HWT drains open
• Dispense line from Dispense Valve to Mug
• TCOs opening and TCO sensors
• Conductive probes and power
• Inlet Valve
• Hi-Pot
The coin IF loopback plug shorts the transmit to receive pin (RJ11 pins 3 and 4).
"27: HWD VALVE"
"MODULE: BR-HEAD"
"29: VEND I/F
LOOPBACK"
"MODULE: M-PCB,
PWR-PANEL"
"30: PASS, !!!!"
"DONE"
B3000 SERVICE MANUAL
60-200807-000, REV C
Open VV. Open
HWDV. Verify
HWT <0.1 psi after 2
seconds
Power off
Tested open in 25
Not tested open
Not tested open
Tested open in 22
Tested open in 28
Auto Continue if
OK
Auto Continue if
OK
Stop
88