Hobart ML-130192 LXePR, ML-130193 LXeR User Manual
LXe SERIES DISHWASHER
MODELS
LXeC ML-130191
LXeH ML-130192
LXe SERIES DISHWASHER
LXePR ML-130193
LXeR ML-130194
701 S. RIDGE AVENUE
TROY, OHIO 45374-0001
937 332-3000
www.hobartcorp.com
FORM 38404 Rev. A (March 2013)
© HOBART CORPORATION, 2010
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TABLE OF CONTENTS
GENERAL .........................................................................................................................................4
INSTALLATION .................................................................................................................................5
Unpacking ................................................................................................................................... 5
Location ......................................................................................................................................5
Leveling ....................................................................................................................................... 5
Water Requirements ...................................................................................................................5
Plumbing Connections ................................................................................................................ 6
Electrical Connection ..................................................................................................................7
Electrical Data ............................................................................................................................. 7
Connection Method ....................................................................................................................8
Detergent and Rinse Aid .............................................................................................................9
Chemical Sanitizer (LXeC & LXePR) ......................................................................................... 10
Checking Sanitizer Concentration ............................................................................................ 10
Deliming Solution ...................................................................................................................... 10
Priming Chemical Pumps .......................................................................................................... 11
Installation Diagram (LXeC) ....................................................................................................... 12
Installation Diagram (LXeH) ....................................................................................................... 13
Installation Diagram (LXePR) ..................................................................................................... 14
Installation Diagram (LXeR) .......................................................................................................15
PROGRAMMING.............................................................................................................................16
Manager Mode Programming ...................................................................................................16
Programming Instructions ......................................................................................................... 16
Menu Display Prompts .............................................................................................................. 16
LXe Manager Mode Programming Card .................................................................................... 17
LXe advansys Manager Mode Programming Card .................................................................... 19
Parameters Menu Table ............................................................................................................21
OPERATION ....................................................................................................................................23
Before First Use ........................................................................................................................23
Controls ....................................................................................................................................23
Operating the LXe Dishwasher .................................................................................................. 24
Diagnostic/Error Messages .......................................................................................................25
Wash/Rinse Cycle Times (LXeC and LXeH) ...............................................................................26
Wash/Rinse Cycle Times (LXePR and LXeR).............................................................................26
Preparation ..............................................................................................................................26
Do's and Don'ts For Your New Hobart Dishwasher ..................................................................27
CLEANING ...................................................................................................................................... 28
MAINTENANCE ..............................................................................................................................29
Deliming .................................................................................................................................... 29
Lubrication ................................................................................................................................29
TROUBLESHOOTING ..................................................................................................................... 30
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Installation, Operation and Care of
LXe SERIES DISHWASHERS
SAVE THESE INSTRUCTIONS
GENERAL
The LXe Series dishwashers are fully automatic, front-loading dishwashing machines. The LXe series
machines are capable of doing 24 to 34 racks per hour, depending on model.
All LXe Series dishwashers shut down automatically 4 hours after last use to conserve energy.
All LXeH and LXeR dishwashers include Sense-A-Temp™ to insure proper hot water temperature
during rinse.
Standard equipment includes two 20" x 20" racks, electronic controls, drain pump, rinse pump, chemical
pumps, ll hose, and drain hose.
MODEL DESCRIPTION
LXeC, LXePR Fresh water rinse; low-temperature, chemical-sanitizing models for use
with 6% sodium hypochlorite solution (bleach) as the sanitizing agent*.
Note: If 8.40% bleach is to be used, contact Hobart Service or your
chemical supplier to change the sanitizer pump settings. (Charges may
apply)
LXeH Fresh water rinse with a built-in 70°F rise booster heater. This allows an
incoming water temperature of 110°F.
LXeR Fresh water rinse with an internal energy recovery unit and a built-in 70°F
rise booster heater. Recommended incoming water temperature 55°F to
80°F.
* - Sanitizing agent must be used in accordance with the EPA-registered label use instructions.
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INSTALLATION
UNPACKING
Immediately after unpacking the dishwasher, check for possible shipping damage. If this machine is
found to be damaged, save packaging material and contact the carrier within 15 days of delivery.
LOCATION
Prior to installation, verify that the electrical supply agrees with the specications on the machine data
plate, which is located on the top of the door.
Steam generated from normal operation may escape from the door. Wood, laminates, veneers, etc. are
unsuitable materials for use in areas exposed to dishwasher steam and detergents. Stainless steel or
other moisture-resistant shields are recommended for surfaces adjacent to LXe sides and top.
LEVELING
The machine must be level to operate properly. Place the dishwasher in its operating location. Level
the machine before any connections are made. Using a carpenter's level placed diagonally on the rack
tracks, level the machine front to back and side to side by threading the adjustable feet in or out. After
leveling the machine, cover the exposed threads of the adjustable feet with black rubber tubing
supplied. (See separate instructions furnished with machine.)
WATER REQUIREMENTS
Proper water quality can improve ware washing performance by reducing spotting, enhancing
effectiveness of labor and extending equipment life. Water conditions vary from one location to another.
The recommended proper water treatment for effective and efcient use of this equipment will also
vary depending on the local water conditions. Ask your municipal water supplier for details about your
local water conditions prior to installation.
Recommended water hardness is 3 grains of hardness per gallon or less. Higher hardness may cause
excessive formation of lime scale. Water hardness above 3 grains per gallon requires water treatment.
Water treatment has been shown to reduce costs associated with machine cleaning, reduce deliming
of the dishwasher, and reduce detergent usage in the dishwasher.
High iron levels in the water supply can cause staining and may require an iron lter. High
chloride levels in the water supply can cause pitting and may require a chloride removal system. Contact
your local water treatment professional for proper water treatment.
Sediment may require a particulate lter. Dissolved solids may require water treatment such as a water
softener, reverse osmosis system, etc. Contact your local water treatment professional for proper water
treatment.
If an inspection of the dishwasher or booster heater reveals lime buildup after the equipment has been
in service, water treatment is recommended. If a water softener is already in place, ensure there is a
sufcient level of salt. Contact your local Hobart Service ofce for specic recommendations.
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A water hammer arrestor (meeting ASSE-1010 Standard or equivalent) should be installed (supplied
by others) in the common water supply line at the service connection.
The plumber connecting this machine is responsible for making certain that water lines are THOROUGHLY
FLUSHED OUT BEFORE connecting to the dishwasher. This "ush-out" is necessary to remove all
foreign matter, such as chips (resulting from cutting or threading of pipes) pipe joint compound from the
lines; or, if soldered ttings are used, bits of solder or cuttings from the tubing. Debris, if not removed,
may lodge in the dishwasher's plumbing components and render them inoperative. Manual valves
or solenoid valves fouled by foreign matter and any expenses resulting from this fouling are NOT the
responsibility of the manufacturer and associated repair costs are not covered under warranty.
Water supply requirements are as follows:
MODEL TEMPERATURE
LXeC 120°F Minimum
LXePR 120°F Minimum
LXeH 110°F Minimum
LXeR 55°F Minimum, 80°F Maximum
NOTE: On LXeR installations, if cold water supply temperature is consistently above 80°F or if excessive
water vapor or steam is entering the room after the condensing cycle is complete, contact Hobart
Service to increase condensing time.
Required owing water pressure to the dishmachine is 15-65 PSIG. If pressures higher than 65 PSIG
are present, a pressure regulating valve must be installed in the water line to the dishmachine (by
others). If owing pressure is less than 15 psi, improper machine operation may result. All LXe models
are equipped with a pumped rinse system; therefore, a water pressure gauge is not required and is
not supplied with the machine.
The water pressure regulator must have a relief bypass. Failure to use the proper type
of pressure regulator may result in damage to the unit.
A manual shutoff valve (not supplied) should be installed upstream of the ll hose to accommodate
servicing the machine.
It is recommended that a line strainer (not supplied) be installed in the supply line between the manual
shutoff valve (not supplied) and the connection point on the machine. Make plumbing connections with
1
⁄2" minimum copper piping OD (3⁄4" recommended), with a 3⁄4" male garden hose tting (not supplied).
See installation diagrams, pages 16-17.
PLUMBING CONNECTIONS
Plumbing connections must comply with applicable sanitary, safety, and plumbing
codes.
Drain
A drain hose, 5⁄8" inside diameter and 6' long, is provided. This should be securely plumbed into a
drain. Use care not to kink hose. See installation diagrams, pages 16-17. Drain must have a minimum
ow capacity of 5 gallons per minute.
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ELECTRICAL CONNECTION
Electrical and grounding connections must comply with the applicable portions of
the National Electrical Code and/or other local electrical codes.
Disconnect the electrical power to the machine and follow lockout/tagout procedures.
ELECTRICAL DATA
Complied in accordance with the National Electrical Code NFPA-70, latest addition.
For supply connections, use copper wire only rated at 90°C minimum.
LXeC
LXePR
LXeH
LXeR
ledoM esahP/ztreH/stloV
120/208-240(3W)/60/1*
1/06/021
208-240/60/1
208-240/60/3
220-240/50/1
tiucriCylppuSmuminiM
yticapmArotcudnoC
20 20
40 40
30 30
40 40
evitcetorPmumixaM
yticapmAeciveD
*The (3W) systems require three power wires that include a current carrying neutral. An additional
fourth wire must be provided for machine ground.
Refer to the data plate on the door handle of the machine and the electrical label on the back side of
the lower front panel for proper selection.
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Connection Method
1. Remove the lower front panel by removing the two screws at the bottom of the panel (Fig. 1).
REMOVE TWO SCREWS
Fig. 1
2. Open door of dishwasher and remove the two left screws and the top right screw (Fig. 2). Pull
top of unit forward approximately 1” and remove the left side panel.
REMOVE THREE SCREWS
Fig. 2
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3. A hole for 1” trade size conduit is supplied at the lower right in the back of the machine (Fig. 3).
If necessary due to space requirements, remove the knockout and use a 45° tting.
KNOCKOUT
Fig. 3
4. Install 1” trade size conduit and tting. Leave at least four feet of electrical line between wall
connection and machine. This allows machine to be pulled away from the wall for cleaning and/
or servicing.
5. Feed wires thru base of unit to front of unit. At least 24” and not more than 28” of the required
wire size must extend from the end of the conduit tting.
6. Make electrical connections according to wiring diagram supplied with the machine and secure
wires to the machine service connection. Keep excess wire in the base of the unit to a minimum.
7. Replace the left side panel, top of unit, and lower front panel. Re-install the three screws located
behind the door and the two screws at the bottom of the front panel.
DETERGENT AND RINSE AID
Use only commercial-grade detergents recommended by your chemical professional. Do not use
detergents formulated for residential dishwashers.
The detergent and rinse aid pump "ON" times are factory-set. If adjustments are required, contact your
local Hobart Service Ofce or your chemical supplier.
Place the detergent and rinse aid containers (which are obtained from an independent supplier) in a
location where the delivery tubes will reach them.
Remove the detergent bottle cap and put the red delivery tube in the detergent container.
Remove the rinse aid bottle cap and place the blue delivery tube in the rinse aid container.
Be sure to push the delivery tube standpipes completely to the bottom of each container. Check to
make sure there are no obstructions or kinks in the delivery tubes.
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CHEMICAL SANITIZER (LXeC & LXePR)
Items such as pewter, aluminum and silver will be attacked by sodium hypochlorite
(bleach). Therefore, chemical-sanitizing dishwashers should not be used to wash such items.
On models LXeC & LXePR, the chemical sanitizer pump is factory-set for use with 6% sodium hypochlorite
solution.
If 8.40% sodium hypochlorite solution is to be used, contact your local Hobart Service Ofce.
On LXeC models, place a 1-gallon bottle of 6% or 8.40% sodium hypochlorite solution (bleach) in a suitable
location no higher than 10 inches off the oor. Do not pre-mix sanitizing solution with water or any other
liquid.
On LXePR models, place a sanitizer approved for potable water rinse machines in a suitable location no
higher than 10 inches off the oor. Do not pre-mix sanitizing solution with water or any other liquid.
Never premix a wetting agent with the sanitizing solution. Mixing may cause
hazardous gas to form.
Remove the sanitizer bottle cap and place the white delivery tube in the sanitizer container. Be sure to
push the delivery tube standpipe completely to the bottom of the container. Check to make sure there are
no obstructions or kinks in the delivery tube.
Frequently check your sanitizer bottle to make sure there is a sufcient chemical supply.
CHECKING SANITIZER CONCENTRATION
Verify there is sufcient chemical supply in the sanitizer bottle and that the delivery tube standpipe is
inserted completely to the bottom of the chemical container. Place a glass rack, with glasses, in the
machine.
On LXePR models, the PuriRinse feature must be deactivated to properly check the sanitizer concentration.
To deactivate PuriRinse, press and hold the WASH key for ve seconds until wash cycle starts.
On LXeC models, press the WASH key to run a cycle. At the end of the cycle, open the door.
Follow the directions precisely that are on the litmus paper vial and test the water on the surface of the
bottom of the glasses. Concentration should be 50 p.p.m. minimum to 100 p.p.m. maximum.
If reading is incorrect, contact your local Hobart Service Ofce or chemical provider for adjustments.
DELIMING SOLUTION
All LXePR and LXeR models are equipped with an automatic deliming system. At installation, a qualied
Hobart Service technician or your chemical supplier must adjust the total water hardness setting to
properly set the delime intervals.
Remove the deliming agent bottle cap and put the black delivery tube in the container.
Be sure to push the delivery tube standpipe completely to the bottom of the container. Check to make
sure there are no obstructions or kinks in the delivery tube.
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