Trouble Shooting Guide
for Bobrick B-850, B-852, B-855, B-856 or B-858
Designer Series Counter-Mounted Automatic, Top Fill Bulk Liquid Soap Dispenser
Step 1: To determine cause: Unplug unit and reconnect unit, look for Green LED light and sound of motor. Activate soap dispenser continually five times.
Un
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If motor running and LED stops flashing when hand is in the activation zone.
Likely Cause
Action
Instruction
Replacement
Part/Kit Needed
Soap may be too viscous (i.e.
Soap may be too thick).
Ensure that soap meets specified
viscosity range. Viscosity range of 100
to 19,000cP (cP = centerpoise).
Adjust portion control knob to get
desired amount of soap.
Replace with soap that is within the recommended viscosity range.
n/a
If unit requires multiple (more
than 5) activations to dispense
liquid. Duckbill inside
Duckbill Housing missing or
not installed properly.
Replace Duckbill Housing.
Contact Bobrick Customer Service.
824-322
No change.
All steps above completed.
Contact Bobrick Customer Service.
n/a
If motor not running and LED stops flashing when hand is in the activation zone.
Likely Cause
Action
Instruction
Replacement
Part/Kit Needed
Gear jamming.
Check for dried soap. Purge system.
Open Cover, pour warm water, and then purge by pressing Automatic
System Flush Button.
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Flashing red LED. Indicates
sensor obstruction.
Ensure all obstructions are clear from
sensor path.
Refer to mounting template
824-307.
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No change.
All steps above completed.
Contact Bobrick Customer Service.
n/a
If motor not running and no LED light.
Likely Cause
Action
Instruction
Replacement
Part/Kit Needed
No power to the unit
Check A/C adapter connection.
If LED lights up then follow the steps listed under
“If motor not
running and LED stops flashing when hand is in the activation
zone”.
n/a
No change.
All steps above completed.
Contact Bobrick Customer Service.
n/a
Un
it L
ea
k
in
g
Likely Cause
Action
Instruction
Replacement
Part/Kit Needed
Bottle Assembly is not tight
over the Stem.
Unscrew Stem Locking Nut.
While pushing upwards on the Bottle, thread the Stem Locking Nut
down onto the Bottle Cap Threads.
Hold the Stem and lightly rotate the Bottle back and forth to be sure
there is no movement.
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Leaking from bottom of the
Bottle.
1. Disconnect fiber optic cables and
power supply from the Bottom
Housing.
2. Locate leak if from bottom of Bottom
Housing.
Ensure that the bottom of the Bottle is properly tightened.
n/a
No change.
All steps above completed.
Replace with Bottom Housing Assembly.
858-250
