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Hobart UW50 ML-27838 - page 1
701 S. RIDGE A VENUE TROY , OHIO 45374-0001 937 332-3000 www .hobartcorp.com FORM 18241 Rev . G (Aug. 2007) UW50 UTENSIL WASHER MODEL UW50 ML-27838 ...
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Hobart UW50 ML-27838 - page 2
– 2 – ©HOBART , 2007 T ABLE OF CONTENTS GENERAL ....................................................................................................................... ....................................... 3 INST ALLA TION .................................................................................................................. ..... ...
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Hobart UW50 ML-27838 - page 3
– 3 – INST ALLA TION, OPERA TION AND CARE OF MODEL UW50 UTENSIL W ASHER SA VE THESE INSTRUCTIONS GENERAL The UW50 Utensil W asher is the answer to volume utensil washing problems in your kitchen, bakery or supermarket operation. The UW50 occupies a minimum amount of fl oor space (under 48" x 43" with door open) and does not require s ...
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Hobart UW50 ML-27838 - page 4
– 4 – UW50 with 10KW Electric T ank Heat with or without 14KW Electric Booster – Installation Diagram: D-812969 sheet 1 ...
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Hobart UW50 ML-27838 - page 5
– 5 – UW50 with Steam T ank Heat (Injector or Coil) with or without 14KW Electric Booster – Installation Diagram: D-812969 sheet 2 ...
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Hobart UW50 ML-27838 - page 6
– 6 – UW50 with Gas T ank Heat with or without 14KW Electric Booster – Installation Diagram: D-812969 sheet 3 ...
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Hobart UW50 ML-27838 - page 7
– 7 – PLUMBING CONNECTIONS Plumbing connections must comply with applicable sanitary , safety and plumbing codes. W ater Supply Connection W ater must be proper hardness. Recommended water hardness is 1 grain or less. Higher hardness may cause excessive formation of lime scale. Chlorides must not exceed 50 ppm. A water hammer arrestor (meeting ...
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Hobart UW50 ML-27838 - page 8
– 8 – VENTING REQUIRED WITH GAS HEA T (OPTIONAL WITH STEAM OR ELECTRIC HEA T) The Hobart UW50 Utensil W asher , equipped for gas tank heat, is not provided with a fl ue collar and is not intended to have the fl ue directly connected to a ventilation system. However , the products of combustion must be vented to the outside air . A vent hood o ...
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Hobart UW50 ML-27838 - page 9
– 9 – RA TE OF EXHAUST FLOW CALCULA TIONS (FIG. 2) Based on the International Mechanical Code (latest edition). Fig. 2 Canopy size and location The inside lower edge of canopy-type T ype I and II commercial hoods shall overhang or extend a horizontal distance of not less than 6 inches (152 mm) beyond the edge of the top horizontal surface of th ...
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Hobart UW50 ML-27838 - page 10
– 10 – DETERGENT FEEDER (OPTIONAL BY OTHERS) If installing a detergent feeder (by others), remove cap to expose 7 / 8 " diameter hole at rear of machine. RINSE AGENT FEEDER (OPTIONAL BY OTHERS) If a rinse agent feeder (by others) is being installed, remove the 1 / 8 " NPT pipe plug to access the tapped hole in the incoming water line ...
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Hobart UW50 ML-27838 - page 11
– 1 1 – Fig. 3 OPERA TION CONTROLS (FIG. 3) PL-56351 OFF START POWER CYCLE 2 4 6 SELECTOR SWITCH FILL NOTE: Opening the door during cycles will cause cycle to start over at the beginning. DRAIN LEVER (Fig. 4) Drain lever is located inside the wash chamber (middle front with door open). Lower the lever to close the drain before beginning a timed ...
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Hobart UW50 ML-27838 - page 12
– 12 – GENERAL OPERA TING INSTRUCTIONS Keep the utensil washer clean to provide best results. Do not allow foreign objects to enter the unit, especially metallic contaminants. Do not wash aluminum utensils in the utensil washer . The caustic detergent and high water temperature will cause aluminum oxide formation (black). Copper utensils may re ...
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Hobart UW50 ML-27838 - page 13
– 13 – DOS AND DON'TS FOR YOUR NEW HOBART UTENSIL W ASHER DO ensure proper water hardness (1 grain or less). T otal Dissolved Solids (TDS) must be 50 ppm or greater . Chlorides must not exceed 50 ppm. DO pre-scrap dishes thoroughly . DO use only detergents recommended by your chemical professional. DO thoroughly cleanse, rinse and dry (lea ...
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Hobart UW50 ML-27838 - page 14
– 14 – MAINTENANCE Disconnect electrical power supply and follow lockout / tagout procedures. MOTOR The motor has permanently sealed bearings and requires no lubrication. W ASH AND RINSE ARMS All wash arms and rinse arms should turn freely and continue turning for a few seconds after being whirled by hand. T o check, DISCONNECT ELECTRICAL POWER ...
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Hobart UW50 ML-27838 - page 15
– 15 – TROUBLESHOOTING SYMPTOM POSSIBLE CAUSE Utensils spotted or not clean Overloaded rack. Low water level. W ater conditions: — Incorrect rinse water temperature. Refer to W A TER SUPPL Y CONNECTION, page 7. — Excessive water hardness may indicate that a water softener is needed. — Incorrect detergent type or concentration for water co ...
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Hobart UW50 ML-27838 - page 16
– 16 – FORM 18241 Rev G (Aug. 2007) PRINTED IN U.S.A. SERVICE In the event a gas ori fi ce fi tting shall be adjusted or replaced, have it serviced by quali fi ed personnel. Contact your Hobart service of fi ce for any repairs or adjustments needed on this equipment. Long-term service contracts are available on this and other Hobart product ...
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