Blender Controls Flowchart - Welbilt Multiplex FreshBlender Service Manual

Troubleshooting

BLENDER CONTROLS FLOWCHART

Check high
Is between Check +24 VDC
voltage input
Y
100 and 250 output at J2 of
line at J1 of
VAC? Power Supply.
Power Supply.
N
Debug input power
circuitry between
power cord and
power supply.
Modbus Communica ons
Check GREEN LED on Is the GREEN N
the Le Blender/Mixer LED
"BLINKING"?
Board.
Y
Magne c Door Sensor Blender Control
With Le Blender Door
"CLOSED", check status of
door sense input within
service mode on the user
interface.
With Le Blender Door
Does status "CLOSED", check voltage
N
indicate between J9-Pin 1 and J9-
"CLOSED"? Pin 2 on the Le
Blender/Mixer board.
Y
N
With Le Blender Door
"OPEN", check status of Does status Y
door sense input within indicate
service mode on the
"OPEN"?
user interface.
Home Sensor Switch
With Le Blender
carriage at "HOME" carriage not at "HOME"
posi on or "HOME" posi on and "HOME"
N
sensor switch Is between
ac vated, check 4 and 6 VDC?
voltage between J13- voltage between J13-
Pins 1 & 2 on Le
Blender/Mixer board. Blender/Mixer board.
Y
Blend Motor Control
With Le Blender Door
"CLOSED", select and turn
"ON" the "LEFT BLADE"
from the "OUTPUTS" screen
in the Service menu.
Check high voltage
Is the "LEFT N
output between J2 and
BLADE" Motor
J7 of Le Blender/Mixer
"ON"?
board.
Y
With Le Blender Door
"CLOSED", select and turn
"OFF" the "LEFT BLADE"
from the "OUTPUTS" screen
in the Service menu.
Check high voltage
N
Is the "LEFT
output between J2 and
BLADE" Motor
J7 of Le Blender/Mixer
"OFF"?
board.
Y
Rinse Solenoid Valve Control
With Le Blender Door
"CLOSED", select and turn
"ON" the "LEFT RINSE
SOLENOID" from the
Continue to Solenoid Valve Control page 39
"OUTPUTS" screen in the
Service menu.
Check voltage output
Is "LEFT RINSE N
between J12 Pin 1 and
SOLENOID"
J12 Pin 2 of Le
"ON"?
Blender/Mixer board.
Y
With Le Blender Door
"CLOSED", select and turn
"OFF" the "LEFT RINSE
SOLENOID" from the
"OUTPUTS" screen in the
Service menu.
Check voltage output
Is "LEFT RINSE N
between J12 Pin 1 and
SOLENOID"
J12 Pin 2 of Le
"OFF"?
Blender/Mixer board.
Y
38
Stepper Motor Slide Control
With Le Blender Door
"CLOSED", select and turn
"ON" the "LEFT BLEND
SLIDE" from the "OUTPUTS"
Power Supply
Check +24 VDC input
Is between
Y
voltage at J1 of Le
22 and 26 VDC?
Blender/Mixer
board.
N
Replace the power
supply.
Check SW1 Modbus Communica ons cable
Y
Is SW1 address
address on Le connec ons at SRB J7
set to "0000"?
Blender/Mixer board. and Le Blender/Mixer
N
Blender/Mixer board to
-
With Le Blender Door
Y "OPEN", check voltage
Is between
between J9-Pin 1 and
4 and 6 VDC?
J9-Pin 2 on the Le
Blender/Mixer board.
N
Replace the le door
open/closed
magne c sensor or
le blender/mixer
With Le Blender
Y
sensor switch not Is between
ac vated, check 4 and 6 VDC?
Pins 1 & 2 on Le
N
Replace "HOME"
sensor switch
and/or
Blender/Mixer
Check high voltage
Is between between J2 of Le
Y
60 and 250 Blender/Mixer board and
VAC? Pin 7 of the Le Safety
Door Relay.
N
Replace the harness
Replace the le
between J2/J7 of the
blender/mixer
Le Blender/Mixer
board.
board and the Le
Y
Check high voltage
Is between N between J2 of Le
60 and 250 Blender/Mixer board
VAC? and Pin 7 of the Le
Safety Door Relay.
Check voltage output
Is between Y
between J12 Pin 2 of Is between
22 and 26 Le Blender/Mixer
22 and 26
VDC? board and Pin 9 of the
Le Safety Door Relay.
N
Replace the harness
Replace the le
between J12 of the Le
blender/mixer
Blender/Mixer board
board.
and the Le Safety
Y
Check voltage output
Is between between J12 Pin 2 of Is between
N
22 and 26 Le Blender/Mixer 22 and 26
VDC? board and Pin 9 of the
Le Safety Door Relay.
Connect the stepper With Le Blender Door
"CLOSED", select and turn
motor harness plug to
"ON" the "LEFT BLEND
J10 receptacle on the
Le Blender/Mixer SLIDE" from the "OUTPUTS"
Check high voltage
input between J5 and
Y
Is between
J6 of Le
22 and 26 VDC?
Blender/Mixer
board.
N
Replace the
interconnec ng
harness wiring
and/or connectors.
Check Modbus
Check GREEN LED on
Y
Is cable
the Le Blender/Mixer
connected?
board J4.
N
Set SW1 Modbus
address on Le
Communica ons cable
"0000".
Blender/Mixer board J4.
With Le Blender Door
"CLOSED", check
N
Is between voltage between J9-Pin
4 and 6 VDC? 3 and J9-Pin 2 on the
Le Blender/Mixer
board.
Y
UL (Redundant) Safety Relay
With Le Blender Door
Is the relay
"CLOSED", check status
coil
of the UL safety relay
energized?
coil.
Check high voltage
Is between between J2 of Le Is between
Y
60 and 250 Blender/Mixer board 60 and 250
VAC? and Pin 4 of the Le VAC?
Safety Door Relay.
N
Replace the Le Safety
Door Relay.
Y
Check high voltage
Is between between J2 of Le Is between
N
60 and 250 Blender/Mixer board 60 and 250
VAC? and Pin 4 of the Le VAC?
Safety Door Relay.
Check voltage output
between J12 Pin 2 of Is between
Y
Le Blender/Mixer 22 and 26
VDC? board and Pin 6 of the VDC?
Le Safety Door Relay.
N
Replace the Le Safety
Door Relay.
Y
Check voltage output
between J12 Pin 2 of Is between
N
Le Blender/Mixer 22 and 26
VDC? board and Pin 6 of the VDC?
Le Safety Door Relay.
Did "LEFT BLEND
SLIDE" go to
opposite posi on
High Voltage Input
Check high voltage
Is between
N
output between J11
100 and 250
and J12 of Smart
VAC?
Relay Board (SRB).
Y
Is the GREEN
LED
Board. "BLINKING"?
Y
Connect Modbus
at SRB J7 and Le
Magne c Door Sensor
Motor Relay Control Enable
With Le Blender Door Is the relay
Y
"OPEN", check status of
the UL safety relay coil. energized?
N
Replace the le
redundant door
open/closed
magne c sensor or
Check high voltage
between the power
Y
input tabs of the "LEFT
BLADE" motor used for
blending the drink.
N
Is between
Y
60 and 250
VAC?
N
Y
Replace the Filter
N
Harness between the
Safety Door Relay and
the "LEFT BLADE"
Check voltage at input
Y
terminals of Le Rinse
Water Solenoid Valve.
N
Y
N
Check voltage at input
terminals of Le Rinse
Water Solenoid Valve.
Part Number REV00 04/08/2020
With Le Blender Door
"CLOSED", select and turn
Y
"OFF" the "LEFT BLEND
SLIDE" from the "OUTPUTS"
Section 5
Replace the
Is between
Y interconnec ng
100 and 250
harness wiring
VAC?
and/or connectors.
N
Debug SRB and
input power
circuitry between
power cord and
Replace the le
N
blender/mixer board
and/or Modbus
communica ons cable.
-
With Le Blender Door
Is between N "OPEN", check voltage
22 and 26 between J9-Pin 3 and
VDC? J9-Pin 2 on the Le
Blender/Mixer board.
Y
Replace the le door
Is between
N
open/closed
22 and 26
magne c sensor or
VDC?
le blender/mixer
Y
N
coil
Y
Replace the "LEFT
BLADE" Motor and/or
Thermal Coutout.
Is between Y
22 and 26
VDC?
N
Replace the harness
between the Le Replace the Le Rinse
Safety Door Relay and Water Solenoid Valve.
the Le Rinse Water
Y
Is between N
22 and 26
VDC?