LX30

Overview

The Hobart LX30 is a fully automatic, front-loading dishwasher in the LX Series. The manual describes the LX30 as a fresh-water-rinse model that requires incoming water at 180 °F. Its standard equipment includes two 20 × 20-inch racks, electronic controls, a pumped drain, a fill hose, and a drain hose. The series uses a 3/4 horsepower electric motor, and the machines shut down automatically four hours after their last use to conserve energy.

The LX30 is distinct from related LX Series models with suffixes. The manual identifies the LX30H as a related model with a built-in booster heater and the LX30C as a related low-temperature chemical-sanitizing model. Those features do not change the LX30’s stated fresh-water-rinse configuration or its 180 °F incoming-water requirement.

Key Features

• Fresh-water rinse: The LX30 rinses with fresh water and requires a 180 °F incoming water supply.
• Automatic operation: The LX Series is described as fully automatic and front-loading.
• Rack equipment: Two 20 × 20-inch racks are listed as standard equipment for the series.
• Pumped drain: A pumped drain, fill hose, and drain hose are included in the series’ listed standard equipment.
• Automatic idle shutdown: The machine shuts down four hours after its last use.

Specifications

• Model: Hobart LX30.
• Equipment type: Fully automatic, front-loading dishwasher.
• Rinse type: Fresh-water rinse.
• Incoming water temperature: 180 °F minimum for the LX30.
• Water use: 1.2 gallons per rack for LX30 and LX40 models.
• Motor: 3/4 horsepower electric motor for the LX Series.
• Standard racks: Two racks, each 20 × 20 inches, for the LX Series.
• Controls: Electronic controls.
• Drain: Pumped drain.
• Hoses: Fill hose and drain hose listed as standard equipment.
• Automatic shutdown: Four hours after last use for LX Series dishwashers.
• Water pressure: 15 to 25 psig flowing pressure.
• Recommended water hardness: 4–6 grains per gallon.
• Maximum chloride concentration: 50 parts per million.
• Electrical supply: The manual directs installers to verify the supply against the machine data plate; it does not provide an LX30 voltage or amperage in the supplied text.
• Dimensions and weight: Not specified in the supplied sources.

Installation & Requirements

Location and leveling

Steam may escape from the door during normal operation. The manual notes that wood, laminates, and veneers are unsuitable for areas exposed to dishwasher steam and detergents, and recommends stainless steel or other moisture-resistant shields for surfaces next to the dishwasher’s sides and top. The machine must be level to operate properly. Place it in its operating location and level it front-to-back and side-to-side using a carpenter’s level on the rack tracks and the adjustable feet. The manual says to level the machine before making connections.

Water supply

For the LX30, the stated minimum incoming water temperature is 180 °F. Required flowing pressure is 15 to 25 psig. If pressure exceeds 25 psig, the manual calls for a pressure-reducing valve with a relief bypass; pressure below 15 psig may result in improper operation. A manual shutoff valve should be installed upstream of the fill hose to allow servicing, and a line strainer is recommended between that valve and the machine. The stated connection uses a minimum of 1/2-inch copper piping OD, with 3/4 inch recommended.

The manual recommends a water hardness range of 4–6 grains per gallon and says chlorides must not exceed 50 parts per million. Water above 6 grains per gallon should be treated with a water conditioner; water below 4 grains per gallon also requires treatment to reduce potential corrosion. Depending on local water conditions, particulate filtration or reverse-osmosis treatment may be recommended. The manual advises checking with the municipal water supplier about local water specifics and contacting a Hobart Service Office for water-treatment recommendations. The water lines must be thoroughly flushed before they are connected to the dishwasher so pipe chips, joint compound, solder, or other debris do not enter the machine. A water hammer arrestor meeting ASSE-1010 or equivalent should be installed in the common water supply line; it is supplied by others.

Drain and electrical connection

The supplied drain hose has a 3/4-inch pipe-connection adapter and should be securely plumbed into the sink drain without kinks. The drain must have a minimum flow capacity of 10 gallons per minute. Plumbing connections must comply with applicable sanitary, safety, and plumbing codes. Before installation, check that the electrical supply agrees with the machine data plate. Electrical and grounding connections must comply with the applicable portions of the National Electrical Code and/or other local electrical codes. The manual directs installers to make electrical connections according to the wiring diagram supplied with the machine; the supplied text does not state a specific LX30 voltage or amperage.

Operation

The LX30’s documented wash configuration is a fresh-water rinse. The manual identifies electronic controls and describes the LX Series machines as fully automatic. The series shuts down automatically four hours after the last use. Before first use, the manual requires cleaning the machine after installation, following the cleaning instructions.

The supplied manual text does not give a wash or rinse cycle duration for the LX30, nor does it provide a step-by-step operating sequence for this model. It lists wash/rinse cycle times as a manual topic, but the actual LX30 times are not included in the provided text. Do not use the operating instructions or sanitizing setup for the LX30C as if they applied to the LX30.

Cleaning & Maintenance

The manual requires cleaning the dishwasher at least once each working day. Use only products formulated to be safe on stainless steel. At the end of the day, press OFF; the machine drains. When the display is no longer lit, open the door and remove debris from the tank bottom. Do not allow food soil to accumulate there.

For the LX30, remove the lower rinse arm by unscrewing its knurled knob, then pull the lower wash arm off its shaft. Remove the upper rinse and wash arms in the same manner. Take out the coarse and fine strainers and thoroughly clean the arms and strainers in a sink. With a damp cloth, wipe the machine interior, water-level probes, and the probe under the fine strainer. Do not use steel wool. Wipe the exterior and the inside of the door, including the lip at the bottom. Use a mild cleanser formulated for stainless steel and a soft cloth or brush for remaining debris.

Replace the coarse and fine strainers. Reinstall the lower wash arm by pushing it down onto the shaft, then place the lower rinse arm on the shaft and tighten the knurled knob. Spin the arms to confirm they turn freely, and repeat for the upper wash and rinse arms. Clean the control keypad and display with a soft damp cloth or sponge and mild cleanser; do not use abrasive or harsh cleaners or scouring pads. Leave the door ajar overnight so the interior can air out and dry.

The manual says not to use residential-dishwasher detergent, not to exceed chemical manufacturers’ recommended concentrations, and not to allow foreign objects—especially metallic contaminants—to enter the unit. It also cautions against over-softening water, specifying that recommended hardness should be no less than 4 grains per gallon. Follow the chemical professional’s prescribed deliming schedule. Deliming solution or other acid must not contact bleach or rinse solution containing bleach used in chemical-sanitizing machines. Do not leave deliming agent in the machine longer than the agent manufacturer recommends. The pump motor has permanently sealed bearings and requires no lubrication. Failure to follow the use, care, and maintenance instructions may void the Hobart warewasher warranty.

Troubleshooting

The manual says to contact a local Hobart Service Office if symptoms persist after the listed possible causes have been checked. For a machine that does not operate and has no display, check whether it is OFF, whether a fuse is blown or a circuit breaker is off, and, on corded models only, whether the cord is unplugged. If the display indicates a door-open condition, open and close the door; if the problem persists, contact a Hobart Service Office.

If dishes are not clean, the manual lists clogged strainers that restrict water to the pump, blocked wash arms or arms that will not turn, rinse arms that will not turn on LX30 and LX40 models, a clogged detergent dispenser, and excessive soil as possible causes. Clean the strainers and arms as directed in the cleaning instructions, check that the arms rotate, and scrape dishes before loading. The manual also lists low water temperature, rapid cycle use with an insufficient hot-water supply, a heavy ware load that cools wash water, and a low booster or sump heater setting as possible reasons for low temperature readings. Avoid overloading racks; for LX30H heater settings, the manual directs users to call a Hobart Service Technician.

If the machine will not fill or will not fill high enough, possible causes include low water pressure, a clogged hose strainer, dirty probes, no water pressure, or a drain valve that remains open. Check that the site pressure meets the specified minimum and that the water-supply valves are working. The manual describes an OFF-ON procedure to help clear a drain-valve obstruction: turn the machine OFF to drain it, turn it ON, and repeat twice. Wait for READY mode and press WASH. The manual then directs the operator to check the water level after opening and closing the door as instructed; if the problem persists, call the local Hobart Service Office. LX18 and LX30 displays may show E0, E2, E3, or E4 for a fill-related problem.

Applications

The LX30’s front-loading format, supplied racks, and stated fresh-water-rinse operation suit commercial warewashing where the site can provide the model’s specified hot-water supply and plumbing conditions. The manual does not provide a rated rack-per-hour capacity, maximum ware dimensions, or a list of suitable dish types. It cautions against washing wooden ware, and notes that pewter, aluminum, and silver can be attacked by sodium hypochlorite bleach in chemical-sanitizing dishwashers; the LX30 is identified separately from the LX30C chemical-sanitizing model.