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B3000 SERVICE MANUAL
60-200807-000, REV C 88
27.
HW Dispense valve “27:
HWD VALVE”
“MODULE:
BR-HEAD”
Open VV. Open
HWDV. Verify
HWT <0.1 psi after 2
seconds
Auto Continue if
OK
28. Transmit and receive
a “1” and “0”
through the coin IF
“29:
VEND I/F
LOOPBACK”
“MODULE:
M-PCB,
PWR-PANEL”
Auto Continue if
OK
29. Done “30: PASS, !!!!”
“DONE”
Power off Stop
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. Tested open in 25
• The HWT
• All fill line components from the HWT through the CWP. Tested open in 22
• All brew line components. Not tested open
Test 25 pressurizes the cold water part of the brewer, thus checking for leaks in:
• The vent line from the CWT to the bin. Not tested open
• The CWT
• The tube from the CWT to the CWP. Tested open in 22
• The inlet valve and high pressure tubing. (to 4 psi) Tested open in 28
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).