Hobart Food Machines LXGC Installation Manual

LXG SERIES GLASSWASHERS

MODELS

LXG SERIES GLASSWASHER

LXGC ML-110380 LXGH ML-110381

Previous models covered by this manual:

LXGC ML-110889 (with 2" dia. casters) LXGH ML-110890 (with 2" dia. casters)

701 S. RIDGE AVENUE

TROY, OHIO 45374-0001

937 332-3000

www.hobartcorp.com

FORM 19469 Rev. C (Nov. 2000)

Installation, Operation and Care of

LXG SERIES GLASSWASHERS

SAVE THESE INSTRUCTIONS

GENERAL

The LXG Series Glasswashers are fully automatic, front-loading warewashers specially suited to undercounter use in close-quarters where a short door is advantageous. LXG models are equipped with

/4 HP electric motor. To conserve energy, the glasswashers automatically shut down 4 hours after

a last use. Standard equipment includes (2) 20" x 20" racks, electronic controls, pumped drain, fill hose, drain hose, and pumps for dispensing liquid detergent, rinse agent, and chemical sanitizing (on model LXGC only). A 2" diameter caster base is an available accessory.

Model LXGH has a fresh water rinse with a built-in booster heater. The 140°F incoming water supply is heated in the booster to 180°F.

Model LXGC has a fresh water rinse and uses the 140°F incoming water supply and chemical sanitizing. Household bleach with either 5.25% or 8.4% sodium hypochlorite solution is the sanitizing agent.

The LXG models use 1.2 gallons of water per rack.

LXG SERIES

GLASSWASHER

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INSTALLATION

UNPACKING

Immediately after unpacking, check for possible shipping damage. If this machine is found to be damaged, save the packaging material and contact the carrier within 15 days of delivery.

Prior to installation, verify that the electrical service agrees with the specifications on the machine data plate located on the front of the glasswasher.

LEVELING

The machine MUST be level. Place the dishwasher in its operating location. Level the machine before making connections. Using a carpenter's level placed on the rack guides, level the machine front-toback 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).

LOCATION

Steam generated from normal operation may escape from the door. Wood, laminates, veneers, etc. are unsuitable materials for use in areas exposed to glasswasher steam and detergents.

Stainless steel or other moisture resistant shields are recommended for surfaces adjacent to LX sides and top.

WATER REQUIREMENTS

Proper water quality can improve ware washing performance by reducing spotting, lowering chemical supply costs, enhancing effectiveness of labor, and extending equipment life. Local water conditions vary from one location to another. The recommended proper water treatment for effective and efficient use of this equipment will also vary depending on the local water conditions. Ask your municipal water supplier for details about local water specifics prior to installation.

Recommended water hardness is 4 – 6 grains of hardness per gallon. Chlorides must not exceed 50 parts per million. Water hardness above 6 grains per gallon should be treated by a water conditioner (water softener or in-line treatment). Water hardness below 4 grains per gallon also requires a water treatment to reduce potential corrosion. Water treatment has been shown to reduce costs associated with machine cleaning, reduce deliming of the dishwasher, reduce detergent usage, and reduce corrosion of metallic surfaces in the booster water heater and dishwasher.

Sediment, silica, chlorides, or other dissolved solids may lead to a recommendation for particulate filtration or reverse osmosis treatment.

If an inspection of the dishwasher or booster heater reveals lime build-up after the equipment has been in service, in-line water treatment should be considered, and, if recommended, should be installed and used as directed. Contact your Hobart Service office for specific recommendations.

NOTE: Iron in the water supply can cause staining. An iron filter is recommended for iron concentration greater than 0.1 part per million. High chloride levels in the water supply can cause pitting. A chloride removal system is required if levels exceed 50 parts per million.

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PLUMBING CONNECTIONS

WARNING: PLUMBING CONNECTIONS MUST COMPLY WITH APPLICABLE SANITARY, SAFETY

AND PLUMBING CODES.

Incoming Water Supply Connection

A water hammer arrestor (meeting ASSE-1010 Standard or equivalent) should be installed (not supplied) in the water supply line.

Water must be proper hardness. Recommended hardness range is 4 – 6 grains per gallon. Lower hardness can promote corrosion, higher hardness may cause excessive formation of lime scale.

The plumber who connects this machine is responsible for making certain that water lines are THOROUGHLY FLUSHED OUT BEFORE connecting to the dishwasher. This "flush-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 fittings are used, bits of solder or cuttings from the tubing. Debris, if not removed, may lodge in the glasswasher'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.

The water supplied to the glasswasher must have 15 – 25 psig flowing pressure with a minimum temperature of 140°F. If flowing pressure exceeds 25 psig, a pressure reducing valve (not supplied) must be installed in the supply line. CAUTION: The water pressure regulator must have a relief by- pass. Failure to use the proper type of pressure regulator may result in damage to the unit. If flowing pressure is less than 15 psig, improper machine operation may result.

A manual shutoff valve (not supplied) should be installed upstream of the fill 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 and the connection point on the machine. Make plumbing

connections with

/2" minimum OD copper piping (3/4" OD recommended); terminate with a 3/4" male

garden hose fitting (not supplied).

Drain Connection

The drain hose is provided with a

/4" pipe connection adapter. This should be securely plumbed into the sink drain. Use care not to kink the hose. The drain must have a minimum flow capacity of 10 gallons per minute.

ELECTRICAL CONNECTIONS

WARNING: ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE APPLICABLE

PORTIONS OF THE NATIONAL ELECTRICAL CODE AND/OR OTHER LOCAL ELECTRICAL CODES.

WARNING: DISCONNECT ELECTRICAL POWER SUPPLY AND PLACE A TAG AT THE DISCONNECT SWITCH TO INDICATE THAT YOU ARE WORKING ON THE CIRCUIT.

Refer to the machine data plate and the label inside the controls drawer for power connection information. Use stranded copper wire rated 90°C and proper wire size.

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1. Remove the cover plate at the upper right rear of the machine (Fig. 1). A hole for 1" trade size

conduit is provided (Fig. 1).

Cover Plate

PL-40805-1

Screws

Fig. 1 Fig. 2

PL-40163-1

2. Open the dishwasher door and remove the 2 screws (Fig. 2) securing the controls drawer. Close

the dishwasher door and open the controls drawer fully.

3. Install 1" trade size conduit and fitting to the cover plate (Fig. 1). A 90° fitting is recommended.

4. Feed wires over the top of the wash tank to the strain relief(s) at the rear of the component drawer.

Provide 32 to 36 inches of wire from the conduit fitting through the strain relief to the terminal block.

5. Reinstall cover plate (3 screws, Fig. 1).

6. Connect wires to terminal block and ground per wiring diagram. Keep excess wire in drawer to a

minimum.

7. Tighten set screw on the strain relief(s).

8. Close controls drawer and replace screws.

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