Lavit LB115 Series User manual

18-11-26-REV-A
Troubleshooting Guide LB115
Series Lavit Dispenser
FOR TECHNICAL ASSISTANCE
PLEASE CALL 1.855.750.5377

18-11-26-REV-A
Table of Contents
Page 1. Introduction
Page 2. Water Flow Diagram
Page 3-4 Electrical Diagrams
Page 5. Beverage Dispense Splatters/Multiple
Streams Page 6-7 “Clean Brewer” Screen Appears
Page 8. “Close Brewer Lid” Error when Brewer lid is
Closed Page 9. “Possible Water Leak” Error Screen
Page 10. No Soda Water –Gas Only
Page 11-13 Troubleshooting the Soda Water Circuit
Page 14 -16 Replacing the Soda Probe
Page 17-18 Soda Solenoid Valve Replacement
Page 19. No Still Water Dispense
Page 20-23 Water Stream Calibration
Page 24 -25 Water Tanks Not Filling at Start Up
Page 26- 27 Water Run On
Page 28 Blank or Black Touchscreen
Page 29 All white touch screen
Page 30 Touch Screen Calibration
Page31WaterChillingScreen
Page 32 Unit not Cooling or Chilling
Page 33-35 Basic Troubleshooting
Page 36 Large Amount of water left inCapsule
Page 37-38 Lavit Quick installation guide
Page 39 Lavit User Guide
Page 40 Draining & Decommission

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Introduction
The purpose of this manual in conjunction with the LB115 Series service manual
is to ensure that technicians are provided with the necessary information and
instruction needed to address any concern or issues that may come up during
the life of the Lavit Beverage Dispenser.
“DID YOU KNOW”
All our technical documents and videos can be accessed anywhere using your
smart phone, Tablet, Lap Top or PC. See instructions below!
Go to https://www.drinklavit.com/ Click on support when the drop down comes
up select Technical then type in the password aluminum. Here you can find our
Field Service Technical solutions manual, technical bulletins, parts and service
manuals and our technical Video.
FOR TECHNICAL ASSISTANCE
PLEASE CALL 1.855.750.5377

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Water Flow Diagram
COLD TANK
DRIAN

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PCB Electrical Diagram

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Cooler Electrical Diagram

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4.
Beverage Dispense Splatters/Multiple Streams
Issue:
When crafting a Lavit beverage the dispense stream is broken up and several streams
may be present andthe cup may overflow.
Solution:
This situation is usually the result of one of the conditions below.
1. Verify that the silicone nozzleinside the brewer is present and that itis
firmly attached to the water outlet fittings.
2. If water is also present in the capsule after the dispense cycle then
recalibrate the mix stream. Recalibrate other streams if
necessary.
3. Clean the chamber and verify the full rotation of the capsule lifting
mechanism. Remove the capsule tray. Pull the linkage attached to the top
of the chamber towards you. Reach down under the linkage and grasp the
capsule lifting mechanism (solid black plastic with a semi-circle cut out).
Rotate the mechanism forward to a full 90-degree position. Push
mechanism all the way back and repeat 3 times ensuring it moves freely.

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“Clean Brewer” Screen Appears
Issue:
Whenusingtheunit,theCleanBrewerscreenappears.
Solution:
There are two reasons why the "Clean Brewer Screen” appears.
1. The brewer is designed so that after a beverage is brewed the capsulelifting
mechanism returns fully to the “Home” position.A Hall Sensor is installed in
the unit to verify that the mechanism has returned Home. If themechanism
does not return to Home then the Clean Brewer screen is displayed. The
normal cause for this to occur is that there has been a beverage build up in
the chamber preventing the mechanism to fully return to Home. Follow the
cleaning instructions to clean the brewer.
2. ThesecondreasontheCleanBrewerscreenwillappearisduetoafaultyHall
Sensor or faulty connection. Remove the lid of the unit. Locate the main PCB
undertheblack plastic shieldon thefront right ofthe unit. On the far left of the
mainPCBlocatetheblackconnectorattached tothe ribboncable. Ensure the
black connectorisproperly seated ontothemainPCB. Remove, reinstall, and
ensure the two locks are secure. If that does not resolve the issue,follow the
ribbon lead going to the back bottom of the brewer. Locate the secondary
connection to the Hall Sensor. Ensure that the secondary connection is
properlyseated.Ifthatdoesnotresolvethe issuethenreplace theHomeHall
Sensorlocatedinthebrewergearbox.
ALWAYS-ChecktheconnectionsontheMainPCB.Ensuretheblackribbonconnectorwith
the grey wires are properlysnapped in place. It is a good practice is to remove and reset
this connection, ensuring the side clips are properly snapped inplace

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Re-install all components in reverse
order and test all functions
Reference pictures for changing the Brew
Chamber Hall/Home sensor
Check Hall Sensor Connection
Remove 5-#1 Philips screws
Mark Gears to ensure proper placement when
re-installing.
Remove Gear Cover
Remove Gear to gain access to Hall Sensor.
Remove 1-#1 Philips screw to change sensor.

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“Close Brewer Lid” Error when Brewer Closed
Issue:
The touchscreen displays a "Close Brewer" message but the brewer lid is in
the closed position.
Solution:
The close brewer message will bedisplayed when thebrewer lid is closed
underthreecircumstances:
1. Ensure that the brewer magnet is present. Open the brewer and locatethe
magnet on the right hand outside wall on the brewer lid. It will be a small
1/4" metallic disc pressed into the external side wall. If the magnet is not
present insert a replacement.
2. The ribbon connector is loose on the main PCB. Remove the top panel
cover. Pull back the plastic cover over the main PCB located on the front
right of the unit. Verify that the black ribbon connector on the far left of
the PCB is firmly attached and the two locks are in place. Disconnect and
reconnect as necessary.
3. If neither of the above clear the error check the Hall Sensor connection to
the ribbon cable. With the top panel removed locate the magnet and Hall
Sensor attached to the external wall of the brewer 1
st
ensure the magnet
is in place. If not replace it. Then make sure the sensor lead is properly
connected to the main ribbon cable. If it is and the error remains then
replacetheHallSensor
Magnet- this activates
the Hall sensor when lid
is closed
Hall Sensor. This let
the board know if
the lid is open or
closed

“Possible Water Leak” ErrorScreen
Issue:
Duringstartup or duringnormal operation the unit willdisplay"APossible Water
Leak" error message screen.
Solution:
This error message appears when the inlet solenoid to the unit has been open
for more than five minutes. Under normal circumstances tank filling or refilling
should not take morethan fiveminutes. If there was a major water leak inside
the unit then the unit would shut down until a repair is made. A false error
message will occur under the followingcircumstances:
1. A plumbed in unit with low inlet water pressure. If the water pressure
going into the unit is less than 30 psi then the 5-minute cycle could time
out and the error message will appear. Turn unit off and restart to clear the
error. Dispense a cup of water to reopen the inlet solenoid. This may
happen frequently during a new install since the amount of water
necessary to fill the tanks may exceed the inlet water line's capacity of 5
minutes. Restart and clear error. Dispense water to o p e nsolenoids.
2. A bottled water unit with a Flo-Jet or Lavit pump will show this error if the
bottle is empty or the pump is not on. Check to make sure your water
bottle has adequate water remaining in it and that the pump is powered on.
Replace bottle water if needed. Turn off the unit and restart. Dispense two
cups of water making sure the pump is on. This will clear any air blocks in
the line and the tanks should refill as normal.
3. The water tanks are not filling due to a solenoid or float issue.See Water
Tanks
Not Filling at Start Up Page 24-25 in this manual.
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No Soda Water –Gas Only
Issue:
Whenthe userselectssodawaterorasodabeveragenosodawateris
dispensed justCO2gas.Thismayhappen all thetime or on occasion.
Solution:
The soda tank is not refilling properly. There may be an air lock in the inlet
water line to the soda tank which the soda pump cannot overcome.
This usually happens on the installation of a unit when the tech turns the CO2
gas on before allowing the soda pump to start pumping water into the soda
tank. To resolve:
1. Turn off the regulator
2. Relieve all gas pressure thru the purge v a l v e
3. Turn off and restart u n i t
4. Dispense afullcup of cold-water
5. Let the soda pump refill the tank (5 to7minutes)
6. Turn onCO2.
7. Before going on with trouble shooting try the above processonce
more.
8. If this does not correct the issue follow trouble shooting thesoda
circuit on pages
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Troubleshooting the Soda Water Circuit
Problem:
When a user selects sparkling water, the unit dispenses justCO2 gas. This may happen
periodically or it may happen continuously.
Issue :
The soda tank is not refilling properly when the water level in the tank islow. Root
Cause:
Air block in the soda water inlet line or a faulty soda level probe circuit.
Troubleshooting Procedure:
1. Removethetopcoverpanelbutkeep the touchscreen
and Lavit button connectors attached.
2. On the main PCB located on the front right of the unit under the
plastic shield, locate the soda probe lead connector. The connector
will be the yellow connector found on the front right-hand side ofthe
unit closest to you. It will have a yellow and black wire attached.
3. Locate the soda pump connector. The connector will be a red
connector along the top of the PCB located in the middle
(5th from right or left).It will have a red and black wire
attached.
4. Inboard to the soda pump connector on the PCB a RED LED
illuminates when power is applied to the Soda Pump. Dispense two
medium soda waters. Watch to see if the RED LED illuminates. Ifthe
RED LED does not illuminate proceed to STEP12.
5. If the RED LED comes on verify that water is being pumped to the
soda tank. This can be verified by the cycling on and off of the inlet
and cold tank solenoids which will also have RED LEDs cycling on
andoff aswell.
6. Ifthe soda pumpRED LED isilluminated and not cycling on
and off of the solenoids then an air block ispresent.
11

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7. Turn the CO2 regulator to off by turning counter clockwise until the knob
cannot turn any more. Ignore the “Off” on the regulator label. Turn past
that to fully turn the pressure off.
8. Relieve all gas from the system by opening the purge valve on
the upper rear of the unit.
9. Turn the unit off. Power the unit on. Dispense a half of cup
of still water by pressing the Lavit Button.
10. Verify that the soda pump comes on (RED LED illuminates). Verify that
they water is flowing to the soda tank (Inlet and Cold Tank Solenoid RED
LEDs cycle on andoff.
11. Once the soda tank fills (soda pump RED LED will turn off), set the CO2
pressure to3.5 bar. Dispense two mediumsoda watersto ensure thatthe
soda pump comes on and water is being pumped into the soda tank.
Proceed to Step23.
12. Disconnect the yellow soda probe connector. Verify that the soda pump
comes on(RED LEDwillilluminate). Verify that water isbeing pumped into
the soda tank by watching for the Inlet and Cold-Water tank solenoids
cycle on and off (RED LEDs will illuminate). Reconnect the connector.
Verifythatthesodapumpimmediatelyturnoff.
13. Dispense two medium soda waters. If the soda pump does not
power onthena faulty soda probe circuit exists. Power the unit off.
14. Remove the ozonator from the top of the cold tank (Blackbox
connected by 4screws).
15. Locate the yellow wire leading to the spade connector attached to
the probe. Disconnect the spadeconnector.
16. Cut away the insulation foam around the probe and savethe
insulation.
17. Using an 11/16” socket unscrew the probe. Use pliers if a socket isnot
available.
18. Remove the O-ring gasket from the old probe and place on the
replacement probe if the replacement probe does not have anO-
r i n g .

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19. Install the replacement probe. Replace the foam insulation.
20. Reconnect the spadeconnector.
21. Reinstall the ozonator.
22. Power on the unit. Dispense a half cup of still water.
Verify that the soda pump comes on and that thesoda
pump is pumping water.
23. Reinstall the top cover panel.

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Replacing the Soda Probe
Pic # 1
Step -1 Open the beverage lid remove the 4-
screws shown below. Then lifting upwards in
the center rear section of the top cover,
unsnap and remove top cover
Step -2 Remove all Screws
shown in diagram below.
Then Look Over top edge of
panel to locate the internal
side panels crew Using Long #
2 Phillips bit remove screw
before removing side cover.
See Pic # 1
Release plastic snap
before removing side
cover

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Step –5 Expose the soda probe head
by cutting out the polystyrene as
marked below .DO NOT DISCARD!! IT
MUST BE REPLACED Remove and set
aside
Step -4 Disconnect the Soda
probe connection.
Step 2 -Remove the four screws, one
on each corner holding 03 Generator/
Ozonator in place.
The 03 Generator/ Ozonator assembly
is located at rear of cooling tank
Step –3 tilt the 03 Generator/
Ozonator assembly to the one side

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FINAL STEP -Replace probe, replace polystyrene and secure it with a non-conductive tape,
white duct tape is preferred, then reassemble in reverse order.
Step -6 After removing polystyrene
Remove black probe cover and set
aside and clear any Polystyrene debris.
Step -7 Gently unscrew soda probe and replace. Soda
probeheadisanM17.
NOTE: Be careful not to lose black O-ring seal, it may
remain in the tank opening, if so remove and place it
back on the probe

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Soda Solenoid Replacement
If the soda valve is continually dripping it may be due to a piece of sediment trapped on the
plunger seal of the valve and stopping it from sealing shut. To confirm the soda valve is
dripping, first vend a still water, then turn off the water supply to the machine, then power
down the machine, and make sure the C02 regulator is turned on. If the soda water is
continually dripping for a minute then it is not sealing correctly.
1) The soda valve is mounted on the left-hand side of the
brewer and is the valve nearest to front (the front
valve)
2) The valve needs to be stripped to gain access to theplunger
seal where there may be a piece of sediment.
3) To do this you need to remove the valve and do thefollowing.
4) Power down, turn off the water supply, turn off the C02
regulator, and release the pressure in the soda tank by
actuating the purge valve mounted on the rear of the
machine.
5) Remove the top cover. 2 screws at the back and 2 screws
on the side wall of the brewer. Disconnect the LCD and the
pushbuttoncable plugs
6) Remove the left-hand side panel, release the 3 screws at
the base, 1 screw on inside of panel near the brewer, two
screws on the rear panel, and a push clip on the rounded
front part of the panel.
7) The solenoid is held in place by 2 screws from base.
8) To gain access to the 2
screws you need to loosen
the 4-screws holding t he
brewer and tilt it on its side gently.
9) Undo the solenoid.
10) Purge the C02 again before you remove the
soda water line. This line is pressurized so always turn
off C02 and purge before disconnection. The line will
drip as the soda water expand.
11) Remove the solenoid enough to gain access to
the base.
12) On the underside in two recessed holes are two
small retaining screws that hold the valve bonnet in
place.

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12) Remove these two screws and the
bonnet will now come off of the valve’s
plastic body. Take care the plunger and
spring do not fallout.
13) Look in the valve body outlet orifice and
the valve plunger seal for a small piece of
sediment that would have stopped the
plunger seal mating correctly with the valve
body.
14) Reassemble in reverse order.
15) Turn on C02, water and power and
test for function or any leaks.
Remove Soda
Solenoid valve
tubing
Soda Solenoid valve
Remove the two screws
Remove Soda
Solenoid valve
assembly