Troubleshooting Guide
for Bobrick B-840, B-842, B-845, B-846 or B-848
Designer Series Counter-Mounted Automatic, Top Fill Bulk Foam 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.
Unit Not Dispensing
If motor running and LED does not stop flashing consistently when hand is in the activation zone.
Likely Cause
Action
Instruction
Replacement
Part/Kit Needed
Fiber Optic Nut may be thread
too tight onto connector port in
the Bottom Housing.
Check Fiber Optic Nut to see if nut has
been overtightened
Tighten Fiber Optic Connector Nut hand tight and then rotate nut
counterclockwise by 1/4 turn (90°).
n/a
No change.
All steps above completed.
Contact Bobrick Customer Service.
n/a
If motor running and LED stops flashing when hand is in the activation zone.
Likely Cause
Action
Instruction
Replacement
Part/Kit Needed
Clogged Nozzle Tip.
Remove Nozzle Tip.
Clean with warm water and replace. Flush whole system. If Nozzle
continutes to be clogged replace.
828-310
Soap may be too viscous.
Ensure that soap meets specified
viscosity range.
Viscosity less than 100cps (CPS = center-
poise)
Adjust viscosity and Flush system.
Flush whole system. Replace with soap that is within recommended
viscosity range.
n/a
If unit requires multiple (more
than 5) activations to dispense
foam. Duckbill inside Foam
Mixer Housing may be stuck
open.
Flush whole system.
If still requires multiple activations, order new Foam Mixer Housing.
828-322
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.
n/a
Flashing red LED. Indicates
sensor obstruction.
Ensure all obstructions have been
removed from sensor path.
Refer to mounting template 824-307.
n/a
No change.
All steps above completed.
Contact Bobrick Customer Service.
n/a
If motor not running 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
Unit Leaking
Likely Cause
Action
Instruction
Replacement
Part/Kit Needed
Loose Stem connection to
Bottle Cap.
Unscrew Stem Locking Nut.
Push the Bottle Assembly up onto the Stem until it stops. While pushing
upwards on the Bottle, thread the Stem Locking Nut down onto the
Bottle Cap threads. Reference Instruction Sheet 848-191.
n/a
Leaking from bottom of Bottom
Housing.
Locate leak if from bottom of Bottom
Housing.
Unit needs to be returned. Replace with Bottom Housing Replacment Kit.
848-250
Soap
Likely Cause
Action
Instruction
Replacement
Part/Kit Needed
Foam Soap too Airy.
Adjust portion control knob. Also check
Nozzle Tip Mesh Screen.
Turn knob clockwise for less air in foam. Clean Mesh Screen and /or
replace.
828-310
Foam Soap too Liquidy/
Watery.
Adjust portion control knob. Also check
Nozzle Tip Mesh Screen.
Turn knob counter clockwise. If Mesh Screen is torn replace.
828-310
