Hobart UW50 ML-27838 User's Manual
Contents
1. a HOIH X X 09 1 1 9 SNOISNIWIQ SNIddIHS d U31S008 M 59 9 1H913M 9NIddIHS 21153808 l 1 315008 581 04 INIHOVA JO IH9I 3M LIN 5 pene i HT UNH Sib ha 01 G3193NNO9 38 10N 40 NOISNVAX3 MOTIV OL HOIH OL X wll X 11 INJA LA WI FA w b 614 253104 113251 48 6 LL Ldd 2 1 T AEN T id 8 5 SZ ISOH ALNG 3NIHOVW 1 15 1 8 8 11 Idd 2 1 w9L S6L L 38 U3LVM 9 19 N3HM X04 1 NOILOANNOD SVO 9d JL _ 1 JJV 49171 69 diddvL 3097 OL Jdid 9L LL 6 91419373 YOLVINOSY 8 5 4 3 UIHSWMHSIQ OL 3NIT U3LVM SU3HLO Ag SAQSAR INAY SNIH I m 931 19975 39 ONT LY Bangs aua y Sey 35 8 97 310H 8 SS399V 01 X18W3ASSV ISd SZ NVHI 43H9IH 534055349 31 154 62 02 SI NIHSVMHSIG GNIS JAOW3H THOSNIS 3804d IN3993L30 td 01 5 3LVM ONIMOTA ONIGTING QAQNIAAOJJJ J4V 91 L EL Ld4 9 E7 NIN 4 0PL 09393090 NIHM il SLINSA4 1538 SNIVHD 9 38 01 SSINQUVH H31VM QIQNIWNODIU 431S008 91419373 HLIM NOILOINNOO 431VM NOWNOD d T C2. 301S 31150990 9019 FATWA 40 3015 43H113 Ol QINIVUQ 38 AVA 215009 HLIM GIYIGNO NIHM 5 AVUdS 9 SANIT 91 61 9 8 6 A T T W F T l 1 8 8 92 i 91 61 69 91 1 89 aglr Ep LL 8 8 44 JONI 92 dn X000 HLIM 91 6 18 Bi She 03432040 NIHM INI TINO JILSOOB 21419313 91 1 8Z 31V9IQNI SINIT NaIHOHQ NAHM N3dO 400G HLIM JOYLNOOD INJA 91 6 SANI H108 553297 LL SIVOIGN I SINIT 9 WAWININ 391A43S 404 JONVHVITO a WAWANIN 031539915 CXI Zd AMACA ACE 3GISNI 031 201 83431 NIVHQ id 8 1 X 8 X 8 0 l ISMOVU 40 3215 I HOIH 8 X X 09 9 9 Gtm iSNOISNAWIQ 9NIddIHS 5 WJO 00t U31SO08 M 581 9 8 ONI dd IHS 21153000 OL GOOH IN3A GSYINDSY 41 INJA IVNHALXA p ef kw acii 5315008 M 581 0 FaNIHOVW 30 1HOI3M 134 Ol Q3LJINNOD LON Q33N JIV 30 NOISNVAXA l 431S008 O M S81 Z8 9 2NIddIHS 21153000 104 MOTIV 01 H9IH OL X sbl X a 11 3 IN3A LA ju nl Z L 61 315008 O M 581 079 i3NIHOVW 40 1H913M 134 l u INBWISNPQW 931 HLIM
3. 750395 119819 aaiva 9313 11 19819 70313 THOLON 51081400 OLON STOMINOD Ar e ETA 1 91819313 MOL HLIM OS AN TA NOILO3NNOO 91419313 INIOd 19 15 JAIS 31150990 2019 3A1TVA 40 32015 43H113 01 GINIVHQ AVN 05315009 HLIM Q343040 N3HM 3SOH AVHdS 69618 0 3LVOIONI S3NI 7 NIHOSS 09 TIQOW 91 L 9 8 5 T T F T T T 9 uc 91 81 69 91 5 ZL 1 7 U TIVM LL 4 2 1 84 8 9 LL 390 4 H4OOQ 164 91 6 18 4 i L 03443Q4O NIHM INI 11N0 53150089 JLVOIONI SINIT NIMOH4 H 941 4 8Z 0343QJO NIHM N3dO 400G HLIM 1OHLNOD INJA 91 6 SINA H108 SS399V ALVOIGN SINIT 301AH3S JONVEVITO NINN si sa wn 8 6 YNVL 3QISNI Q31VOOT 1 Nivaa 8 L X 8 L ZZ X 874 09 1 30 3215 HOIH 8 X 8 X 409 1 1 ISNOISNAWIQ 9NIddIHS 315008 M 581 998 BNIddIHS 2115300 Wiri T 315008 M S81 OL EINIHOVW 40 1H IIM L3N ISAVHX3 W49 00 3Gl1AO4d l 315008 O M S81 28
4. Deliming may be necessary Excessive water hardness may indicate that a water softener is needed Utensil washer was not cleaned properly Refer to CLEANING THE UTENSIL WASHER pages 12 and 13 Wash arm blocked with debris Refer to WASH AND RINSE ARMS page 14 15 SYMPTOM POSSIBLE CAUSE Machine won t Fuse blown or circuit breaker tripped operates Selector Switch is turned OFF Check water level in tank Drain overflow tube may not be seated Worn or torn O Ring may cause overflow tube not to seat Leaking valves Solenoid valves Contact Service Vacuum breaker Foreign material preventing proper valve operation A critical period is soon after installation when pipe compound or metal shavings may lodge at the valve seat DISCONNECT ELECTRICAL POWER SUPPLY Shut off water supply line Unscrew and lift bonnet from valve body Clean valve and reassemble No wash tank heat The low water detector will shut off heat if water level is too low Check water level The overflow tube may not be seated Fuse blown or circuit breaker tripped if equipped with electric heat Manual steam valve not open completely if equipped with steam heat Overtemperature protector tripped gas or electric tank heat only Contact Service No fill or slow fill Dirty line strainer causing reduced water flow Turn off water supply Remove strainer cap Withdraw and clean screen Reassemble
5. YBNUNE 1 3MASSIMA SYS TWANIVN 403 10 Q3LV3H 579 PLUMBING CONNECTIONS A WARNING Plumbing connections must comply with applicable sanitary safety and plumbing codes Water Supply Connection Water 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 ASSE 1010 Standard should be provided by others in the water supply line ahead of its connection to the line strainer The water supply line should be a 5 4 pipe A flowing pressure of 15 to 25 psig is required at the pressure gauge provided The pressure gauge may be connected to a petcock if equipped and should remain closed except when the flowing pressure is being checked If the flowing pressure exceeds 25 psig a pressure reducing valve not supplied on machines without booster must be installed in the water supply line A pressure reducing valve with relief bypass is furnished with machines equipped with a 14KW electric booster NOTICE 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 The minimum water supply Minimum Water Supply Temperatures temperature per cycle time required to maintain 180 F final rinse temperature is shown at the right Drain Connection A proper drain should be connec
6. SNIddIHS 911S3W00 OL QOOH IN3A 03811034 31 INJA 1 Z L SZ l 9 1 62 3315008 O M 581 099 EINIHOVW 30 LHO13M 134 01 Q3193NNO9 LON G33N 30 NOISNVAXA y INIWISNPQV 931 HLIM 8 L L OL dN 48 404 MOTIV 01 a OL X all X a LIX3 IN3A LA GASVAMONI 1 80014 WON4 NIMVL SNOISNIWIG TIV 34 91 91 69 310H 1 SS390V 01 9N1d 3419 4 5310 SNO3NV11730SIW 8 1 3A0W38 LdN 8 1 430334 IN39V 5 Sd 8 9773710H 8 4 SS390V 01 XISWASSV SIS ay 2 1 ALNG AAVSH HLIM NIHON 3931742279790 SAV 9L L 2L71d4 t NIW 3 091 8 1 G GINOHS 231VM ONINV37O N3HM 1 X04 HLIM NOILOINNOO U31VM NOWNOD d aie z 91 91 SI SNOI1OJNNOO 44 8 G G ldd aZ A c 3315008 21819313 N3HM G3HSINEN4 MOLVINJAH 55339 910 01 1 ISIN SAVA ONT 8 5 4 INASJU 4 08L NOILOSNNOO 431VM NOWNOO Ld d SZ NVHI 23HOIH 53155349 41 ISd 92 02 SI Y3HSVMHSIC 33V 8 1410 LINQNOD H E NAHM 0ll 1 Lee SHN OL lt AJIM SNIMOT3 ONIQIINB G3GNSANOORS TOYLNOD INIA NOILOINNOO 91819313 3 SLINS3M 1538 404 SNIVYD 9 Ol SS3NGYVH U3LVM QIONINHODIU 33 61310H
7. NOL LOANNOD 301 ANBS LV ANL T 119975 WALVA NOANOD SNOILOSNNOD 44 8 6 6 ldd Z Zd 8 9L GL 1 0101 3559 113 YOLSJYYY YIWAYH l AAV 91 ldd i b 9L LL 5310 ONIGNNId 43LVM 3 081 193 NOWNOD Ld Z L L 9 8 310 LINGNOD N3HM 01 3014 LOaNNOD JONINOS 1 11 91519313 3 118 IsnVHX3 GVO ST 41038 81 LVH SVD NAHA 339 67310H LINGNOD 2 1 5 3 A pe L BNYdO d 000 Lv IN39V 3SN1 1N3993130 NO 19JNN00 91919313 Z3 9 5 OL aE A ri WUNIVN 000 LUNI N18 1 SY9 35 46 J10H LIMQNOD 1 9L HL LSANSNOILOANNOS NISMAT MIHSVAHS OL GNIJ NI SAULO 48 SONI LVIND3H IUNSSIHA Y 1051001909 P QOLOMI NOILOSNNOD 1 91919313 13 8 6 l a H 9L 1 91 5 1 1 1 3009 C OTM bL 20 4 1 YSHOIH SI 38155384 SVO JI 12 812373 TNOILYN 40 SNOJ 180d LON Q1NOHS NOILOZNNOD YINOLSNO QN3931 91 6L LZ 318V1 189 HLIM 114WOO ISNA anya JMNSSISJ SVD WAJONLAJ 031 31011 403 SNOILJINNOD SNIONNOYD 1 21515313 a LON GINOHS NOILOINNOO 40014 QIHSINI4 337 8 0 Ly GNINSVA
8. UWS0 UTENSIL WASHER MODEL 050 ML 27838 701 S RIDGE AVENUE TROV OHIO 45374 0001 937 332 3000 FORM 18241 Rev G Aug 2007 www hobartcorp com TABLE CONTENTS GENERAL tad 3 INSTALEATION Da a a a e 3 ia g a G a tele 3 InStallation GOSS a 3 LOCALION i 3 Installation Diagrams 4 Plumbing Connections A 7 Gas Connection When Specified a ada 7 Steam Connection When Specified 2 An AEEE AAAAEAHNARAKAEEEEZAMEMAZZEZZKEENEEZEZZZZE 7 Venting Required With Gas Heat Optional With Steam or Electric 8 Rate Of Exhaust Flow Calculations anna 9 Detergent Feeder Optional By Others AA 10 Rinse Agent Feeder Optional By Others 10 si rie 10 Vent Fan Control Optional Power Vent 10 Electrical Connection th ae tate 10 OPERATION Gad bate deren nent a ede bene Re ee e 11 Control
9. Wash and rinse the overflow tube inside and out Thoroughly cleanse and flush the interior of the machine Remove remaining soil with a soft cloth or brush and a mild cleanser Rinse again Do not allow food soil to accumulate in the tank bottom Reinstall the overflow tube Carefully reinstall the strainer pan strainer basket and drain cover The opening at the corner of the strainer pan allows the capillary tube to go into the tank NOTICE On machines with the capillarv tube in the tank use care when assembling strainer pan so the capillarv tube is not damaged during assembiv Make sure that the wash and rinse arms rotate freelv and are free of anv obstructions If anv obstructions are present remove the wash and rinse arms Clean the wash and rinse arms under running water in a sink 12 The wash and rinse arms easilv removed for cleaning To remove the upper wash and rinse arm Fig 6 e Unscrew the hand knob e Remove the upper rinse and wash arms together Be careful not to drop these arms e Replace after removing any obstructions by reversing the removal procedure To remove the lower wash and rinse arm Fig 7 e Lift off the rinse arm HAND KNOB UN SCREW TO REMOVE e Unscrew the rinse arm bearing pin WASH RINSE ARMS Liftoffthe lower wash arm Itisnotnecessary toremove _ the spacer located on the lower wash arm shaft e Remove any obstructions from the wash arms e Replace wash and r
10. 48 L L OL Ag Q3HSINSN4 dVUL 3dAL 1390N8 44V 8 ZL Ldd F P E 184 OL OL GIVENFONGS fl ir GASVARONI GAIT H0014 NAVI SNGISNINIG TIV cave GE te SALON SNO3NV1139S IW 189 0G ONIMOT4 ISd GZ 01 OL 1109 WW3LS dd Z L Sz A 9 1 333 917 8 67 NIN 4 091 1 0343030 x l l 9L EL 9 WIHSWAHSIO 01 WW3IS 3315008 91919373 HLIM NOILOJNNOO J3ILVM NOWWOO 9d i 1 il NI SY3H10 8 93119915 38 LSM 330 LMHS 33 91 51 69 310 QIddvI SS390V 01 9019 3dld T 1 WW3LS NI 14 8 1 LaN 8 1 143033 INJ9W JSNIH Sd Tens LONI noviny w ddy 8 9Z77310H 8 4 SS300vV 1 AISWASSY t SAWS BORSA ANA JHOSS INISYAL AO Wa gt 1 ALNG HLIM INIHOVW 11 15 TAH a ldd 978 15 09 8 1 G 38 QINOHS ONINV3IO N3HM 404 ONIMOT4 ISd GZ OL OL YOLOSPNI WYJIS ii 8 9L GL SNOILO3NNOD OML 44V 8 6 5 143 Z Le 9 11 3315008 91819313 N3HM 1 9 IWISSIWA 34 91 144 575 ic MBHSWMHS 01 3NI7 U3IVM NI SH3HLO 48 4 081 193 109 HILY 14 8 8 L 199998 val Wadi Sunset tT 1a S 07
11. 51 ASHSVAHEIO 8 1310 LINGNOD 9 1 0383QH0O NAHM 01 5 AZLVM ONIMOTS ONIGTING QIONIWNODIU 1 2 LIN3A NOI1JINNOD 91819313 91 81 OL 15111534 1538 X04 SNIVHD 9 3A SSANQUWH XJLYM QIQNIWNODIU 6 310 LINQNOD 2 1 5339333 m 9 1 NOILO3NNOO 391A83S IV 3INIT 1 HALVM IN39V 3SNI8 1N394313Q NOILO3NNOO 21519313 Z4 FN INA oa NI 18 031 19915 38 01 INJTVAIND3 YO 35 46 LIMQNOD 4 L L 8 6 5 OLOL 3SSW 1339 01534 YBNNVH HILVIA 1 1081 5 B YOLOW NOILOJNNOO 1791819313 13 1 90 EL 9L OT GN 5310 J9NIBWNITA 79214193137 IWNOLIVN 3HL 30 SNOILHOd QN3941 91 GL LZ dav ISAN SNOILO3NNOD 9NIONNOX9 1991519313 40014 QIHSINI4 JAO8V 33 l 8 6 LY NOI LVWHOJNI NO LOSNNOOD ONT NYVM J99US 696618 73Q1S 311SOddO 9N1d 3015 43HL13 OL Q3NIVUQ 38 AYN ONIdld 117 30 12 1d3M 398 LSNW V34V SIHL anid GNOYHS SVO JATVA 40 911J99 2 MPL JO JUEL SBD OSMN se se 9 09 08b SL 51 9 6 09 08b 0 0 ZG 09 0tZ Se SZ
12. 9 81 09 Ovz 08 08 709 09 80Z 08 og 09 80Z ALTOVA ALTOVA 301 030 391430 3411931044 991 289192 sony 2345 1 1 0190009 750395 1179919 79313 Nasino LINAS asi vas 5313 AIXM 19905 NWIXVA THOLON 5708100 Sg SIN NOILO3NNOO 91810313 INIOd 379NIS 43150089 HLIM G343Q4O NAHM 3LVOIQONI 3SOH vHdS NOILVWJHOJNI LOANNOOD SaNI1 NIMO4A 9L L 9 8 55 8 5 LL pr T T N QALA 18 41 G T 7 i l OZ Ni B E 92 na Lez n8 LL w9L SL 69 1 Ts 9171 89 TIVM wOL EL LL TIVM 22 wave Lz JONINAdO Se q l 6 92 l Be D Ze NY HLIM LI 91 6 18 l gt lt E N 3NI TINO 5315009 215102313 ILVOIONI SINIT NIA O0XE 1 91 L 8 7 9 G3430H0O N34O HLIM TOHLNOD IN3A w9L 6 Z 5 9 404 H108 55322 SINIT NIHOHQ k agyinoay 19 301AM3S YO4 SONVYVS1O es tara sees Se 3N14 WOWINIW af WAANNIW 031539905 CMD GAtd cid X soya U
13. SERVICE In the event a gas orifice fitting shall be adjusted or replaced have it serviced by qualified personnel Contact your Hobart service office for any repairs or adjustments needed on this equipment Long term service contracts are available on this and other Hobart products FORM 18241 Rev G Aug 2007 16 PRINTED IN U S A
14. terminates in a round duct connection for a 10 a O D duct ELECTRICAL CONNECTION A WARNING Electrical and grounding connection must comply with the applicable portions of the National Electrical Code and or other local electrical codes A WARNING Disconnect electrical power supply and follow lockout tagout procedures Connect incoming power to the control box in accordance with the wiring diagram located inside the control box and the electrical data chart The front trim rail and the front panel must be removed to access the control box ELECTRICAL DATA 10KW Electric 10KW Electric Heat Steam Tank Heat Steam Tank Heat Injector Gas Tank Heat Single Gas Tank Heat With 14KW Heat Single Point With 14KW Electric Injector or Coil or Coil With 14KW Point Connections Electric Booster Single Connections Booster Single Point Single Point Electric Booster Single Point Connections Connections Connections Point Connections Amps Amps Amps Amps Amps Amps Amps Amps Amps Amps Amps Amps os 2 as os os ez wo ve es we ws oa we e Minimum Circuit Size Maximum Protective Device Amps compiled in accordance with the National Electrical Code NFPA 70 latest edition For supply connection use wires suitable for at least 90 F or equivalent Rotation of Pump Motor Before using the machine c
15. 18 MINIMUM OVERHANG AT FRONT OPENING Fig 1 Type or Type canopy hoods are recommended A factorv built commercial exhaust hood may be listed as conforming to Underwriters Laboratory s standard 710 titled Exhaust Hoods for Commercial Cooking Equipment Hoods must be installed according to the manufacturer s instructions Make up air must be provided so that the exhaust flow rate results in a positive building pressure in the room where the unit is located more outside air than exhaust air Factory built hoods not tested to UL standard 710 and custom built hoods must comply with the following specifications Stainless steel should have a minimum thickness of 0 037 in 0 94 mm No 20 Gauge or copper sheet weighing at least 24 ounces per square foot 7 Kg m the hood must be secured in place by noncombustible supports and must meet the RATE OF EXHAUST FLOW CALCULATIONS on the next page 8 RATE OF EXHAUST FLOW CALCULATIONS FIG 2 Based on the International Mechanical Code latest edition LENGTH CLEARANCE HEIGHT 7 FTI L oo Fig 2 Canopy size and location The inside lower edge of canopy type Type and Il 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 the appliance on all open sides The vertical distance betwe
16. LINGNOD 2 1 5 30339 8 95 21 p 91 5 bl 301AY3S_LY 3NIT X3LVM NOWAQQ IN39V 3SN14 IN394313Q NOI 193NNOQ 91419313 24 heal 9L L 9L 3009 OSNIGWNId ONY NI_ SY3HLO 8 031 19915 38 1N3JIVAINOJ Bi AL3AVS 318V21Iddw IM GYVONVIS 0101 355 9NIL33W YOLSIHAV YIWAVH YILYM s6 LINGNOD 971 AJNOS 15 SNOTLO3NNOD LV3H 91819313 ONIGNIONI NOTLOINNOD 1791319313 13 L 7 L 074 91 891 SALON ONIGNNId BNL gO QN3931 8 Ly 318V91 Ida IHI HLIM TGWOO ISAW SNOILO3NNOD ONIGNNOYD 191010313 40014 QIHSINI4 3409Y 44V9 50 NOI LVWHOJNI LOSNNOO IN I NYYM 199US 6962 18 21 MAYL INOUYM JO 10 JESH yue weas OSMN SF 09 087 St 09 08 OL OL 5 09 0 7 52 SZ 9 1 09 0 2 08 08 09 09 802 Ge 0 09 802 ALTOVA LJOVAWW 391A30 391430 3A119310 801 saw 50385 194 10x 50199900 soads liNaxsnosaao LOWS 9313 inzana 5373 NIX and dha ONY STOH INOI SOLON ONY 5105100 0315009 91419313 Mrl 1V3H WY31S HLIM OS MN NO LO3NNOD 91919313 INIOd 319 15 1V3H WW31S HIIM 05 NOILO3NNOD 91419313 INIOd 319NIS
17. asive pad nylon bristle brush or sponge with abrasive surface Scotch Brite may be used before washing in the utensil washer Never use steel wool on ware to be loaded into the utensil washer Use only products formulated to be safe on stainless steel Rinse items thoroughly after scrubbing to remove metallic debris CLEANING THE UTENSIL WASHER A WARNING Disconnect electrical power supply and follow lockout tagout procedures The utensil washer must be thoroughly cleaned at the end of each working shift or at least daily Never use steel wool to clean utensil washer surfaces Turn the Selector Switch OFF Open the doors and lift up on the drain lever to drain the tank Remove the strainer pan and strainer basket Fig 5 and es empty into a waste disposer or garbage container Wash and rinse strainer pan and strainer basket thoroughly notbang strainer pan or basket on tables to remove food soil STRAINER After the tank has drained completely lower the overflow f BASKEN tube to close the drain Reconnect the electrical power to the machine Fig 5 Turn the Selector Switch to FILL and press the Start button The machine will fill and rinse any debris into the tank After Fill is complete turn the Selector Switch OFF open the doors and lift up on the drain lever to drain the machine A WARNING Disconnect electrical power supply and follow lockout tagout procedures Remove the overflow cover and the overflow tube
18. en the front lower lip of the hood and such surface shall not exceed 4 feet 1219 mm The RATE of air flow required for a vent hood is a minimum of 100 CFM per linear foot of hood length DETERGENT FEEDER OPTIONAL BV OTHERS If installing a detergent feeder by others remove to expose 7 diameter hole at rear of machine RINSE AGENT FEEDER OPTIONAL BY OTHERS If a rinse agent feeder by others is being installed remove the NPT pipe plug to access the tapped hole in the incoming water line below the vacuum breaker on top of the machine VENT EXIT Avent exit 7 x 11 x 10 is provided in the top of the machine to allow for expansion of air It should not be directly connected to an external vent VENT FAN CONTROL OPTIONAL POWER VENT OPTIONAL The Vent Fan Control option factory or field installed provides switching for a vent fan by others The vent hood comes on when the UW50 is and goes off when the UW50 is off This is appropriate for a hood over a UW50 with gas tank heat The Vent Fan Control can be rewired by your Hobart service technician to control the Power Vent option not available on UW50 with gas tank heat Power Vent is used on UW50 with steam or electric tank heat to exhaust moist air from the chamber after the rinse cycle is finished Power Vent operates for 45 seconds Power Vent field installed only extends upward 13 a above the Vent Exit 227 s above the top of the wash chamber and
19. ght indicates a timed fill or wash cycle is in process 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 fill Rotate lever upward to open the drain after turning the machine off at the end of the day DIAL THERMOMETERS not shown Thermometers indicate the Wash Tank Temperature and the Rinse Temperature Thermometers are located on top of the wash chamber and are clearly PL 40115 1 visible when the doors are shut Minimum Wash Tank Temperature is 150 F Minimum Rinse Temperature Fig 4 is 180 F 11 GENERAL OPERATING 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 require polishing to remove oxide formation after exposure to utensil washer cleaning for a period of time Stainless steel utensils should clean quickly and easily if the food soil is not baked on It may be necessary to scrub or prewash some hard to remove substances which may not come clean in the utensil washer with even a 6 minute washing For stubborn food soil a plastic scraper plastic abr
20. heck DISCONNECT ELECTRICAL POWER SUPPLY rotate arms and remove any obstructions causing improper operation Refer to CLEANING THE UTENSIL WASHER on pages 12 and 13 If the slanted strainer pan and strainer basket are not properly in place obstructions such as food particles or toothpicks may clog the wash arm nozzles DELIMING A WARNING Deliming solution must not come in contact with bleach or rinse solution containing bleach Mixing may cause hazardous gas to form This entire procedure must be followed step by step for safe and satisfactory results The dishwasher should be delimed on a regular basis as required How often depends on the mineral content of the water Deliming should be done when you can see clear signs of lime deposits a white chalky substance on the inside walls and on the wash and rinse arms Inspect the machine interior for lime deposits If deliming is necessary a deliming agent available from your detergent representative should be used for best results Delime as follows 1 Lift drain lever and drain tank 2 Remove rack from machine 3 Close door 4 Fill machine 5 Open door and add deliming agent carefully follow supplier s instructions NOTE The sump holds 27 gallons of water 6 Close door and allow machine to complete a 6 minute cycle 7 Open door and lift drain lever to drain tank 8 Inspect interior of machine for lime deposits Repeat Steps 3 through 7 if necessary NOTICE Do not all
21. heck the pump motor rotation to be sure it is rotating in the right direction From the front of the machine the motor should rotate counterclockwise Looking from the rear of the machine the correct rotation is clockwise Inspection is easiest from the right side using a flashlight and mirror to check the motor fan in front Be aware that the mirror will reverse the perceived direction If the pump motor is rotating in the wrong direction follow this procedure A WARNING Disconnect electrical power supply and follow lockout tagout procedures Reverse any two of the three incoming line wires not the ground wire Reconnect and recheck rotation of pump motor 10 OPERATION CONTROLS FIG 3 SELECTOR SWITCH AA 7 m 6 FILL HOBART Fig 3 SELECTOR SWITCH OFF Electric power to machine is off POWER and CYCLE lights are off FILL Timed fill requires about 3 minutes Be sure Drain Lever Fig 4 is closed Press the START button to begin a timed fill SELECT WASH CYCLE and press START 2 A 2 minute wash cycle is followed by a 5 second pause and a 24 second rinse 4 A 4 minute wash cycle is followed by a 5 second pause and a 24 second rinse 6 A 6 minute wash cycle is followed by a 5 second pause and a 24 second rinse START button Begins a timed fill or starts a wash cycle POWER light green Indicates the machine has power and the Selector Switch is not off CYCLE light white Amber li
22. inse arms by reversing the removal procedure Leave the doors open to allow the interior to dry and air out DOS AND DON TS FOR YOUR NEW HOBART UTENSIL WASHER DO ensure proper water hardness 1 grain or less Total 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 leave door open the machine at the end of the day DO closely follow your chemical professional s prescribed deliming schedule DO use only products formulated to be safe on stainless steel DO NOT use detergents formulated for residential dishwashers DO NOT allow food soil to accumulate on the tank bottom DO NOT exceed chemical manufacturer s recommended concentrations for detergent sanitizer rinse aid or lime scale remover DO NOT use steel wool to clean ware or warewasher surface DO NOT allow foreign objects to enter the unit especially metallic contaminants NOTE Failure to follow use care and maintenance instructions may void your Hobart warewasher warranty 13 MAINTENANCE A WARNING Disconnect electrical power supply and follow lockout tagout procedures MOTOR The motor has permanently sealed bearings and requires no lubrication WASH AND RINSE ARMS Allwash arms and rinse arms should turn freely and continue turning for a few seconds after being whirled by hand To c
23. ow deliming agent to remain in the machine longer than recommended by the deliming agent manufacturer After deliming run the machine through two 6 minute cycles with no utensils in order to rinse and flush machine interior 14 TROUBLESHOOTING SYMPTOM POSSIBLE CAUSE Utensils spotted or Overloaded rack not clean Low water level Water conditions Incorrect rinse water temperature Refer to WATER SUPPLY CONNECTION page 7 Excessive water hardness may indicate that a water softener is needed Incorrect detergent type or concentration for water conditions Incorrect rinse additive for water conditions Inadequate rinse Dirty line strainer causing reduced water flow Turn off water supply Remove strainer cap Withdraw and clean screen Reassemble Low water pressure supply line Excessive mineral deposits throughout wash and rinse system Deliming may be necessary Check water level in tank The machine won t clean well if there isn t enough water for the pump to maintain adequate wash pressure Drain overflow tube may not be seated Worn or torn O Ring may cause overflow tube not to seat Loss of water pressure due to pump obstruction DISCONNECT ELECTRIC POWER SUPPLY Drain tank and check for obstruction at the strainer basket and pump intake Insufficient detergent dispensing Check supply or detergent supplier Excessive mineral deposits throughout wash and rinse system
24. s Fidi 11 General Operating Instructions 0 A AHEAAAAAKNEHEMAKANEEEMEEENNEEEEMMNNEEEEMEEENEEZEZEERI 12 Cleaning the Utensil Washer is eda ti Rae nea dee 12 Dos Don ts For Your New Hobart Utensil 13 MAINTENANCE 2 a A a ie alias al tend nn dat PA a o 14 Motor ise A a A ee Ree 14 Wash and 56 a AT A Reeve ear A BA A 14 Deming a fk 14 TROUBLESHOOTING 15 DOR VICE seg ea 16 Model UW50 Utensil Washer With Booster HOBART 2007 Erie INSTALLATION OPERATION AND CARE OF MODEL UW50 UTENSIL WASHER SAVE THESE INSTRUCTIONS GENERAL The UW50 Utensil Washer is the answer to volume utensil washing problems in your kitchen bakery or supermarket operation The UW50 occupies a minimum amount of floor space under 48 x 43 with door open and does not require separate dishtables The upper portion of the door raises while the lower portion swings out to provide a drain platform The rack can then be pulled out for easy loading and unloading The program selector lets you select a 2 4 or 6 minute cycle each wash cycle is followed by a d
25. st the electrical service to ensure that it agrees with the specifications on the data plate located below the controls lower right front INSTALLATION CODES Installation must be in accordance with state and local codes with the national Fuel Code ANSIZ223 1 latest edition if applicable and the National Electrical Code ANSI NFPA70 latest edition In Canada the installation codes are CAN CGA B149 1 CAN CGA B149 2 and CSA 22 1 latest edition LOCATION Set the machine in place after the final floor covering is installed Make sure the machine is level before making any plumbing connections Machines equipped with gas heat require a minimum 3 clearance from the rear of the flue to any combustible construction Allow at least 3 at the rear and 18 at the sides of the machine as a suggested minimum for service access Allow 13 in front of the machine for the door to lower and sufficient additional space for the operator to work 22853 L 199US 6962 18 UONEJJEJSU 21 MAYL JNOLJIM JO UJIM JUEL 21119913 MAOL WIM OSMAN ee A 05 06 05 09 08p 08 oF s ezj 09 08t 10518808 001 e 6 09 0rz 09 o9 097 0 001 Voor 68 09 80Z 0 04 0S 09 80Z ALL OVEN pia AL Loven 11 1 991 20 8199 750395 391919409
26. ted to the 2 internal threads at the T fitting underneath the machine The drain can be connected on either the left or right side of the fitting The right side of the fitting is plugged at the factory allowing the drain to be connected on the left side If it is more convenient to connect the drain on the right side remove the plug from the right side of the T fitting reinstall it on the left side and connect the drain to the right side GAS CONNECTION WHEN SPECIFIED Check the gas data plate attached to the dishwasher or tag attached to the gas burner tubing for type of gas to be used Connect the gas supply to the machine The burner is not adjustable If line pressure is above 7 W C natural gas or 11 W C propane gas an additional regulator valve not supplied must be installed in the supply line The burner is ignited by solid state electronic circuitry there is no pilot light Gas flow is regulated by the temperature control circuit via a blower and centrifugal switch system STEAM CONNECTION WHEN SPECIFIED Machines equipped with steam injector tank heat have a steam connection 2 4 female pipe thread located under the machine at the rear 6 above the floor Machines equipped with steam coil tank heat have the steam supply connection 4 female pipe thread located at the rear of the wash tank 19 above the floor and a condensate return connection 2 4 female pipe thread located at the rear of the
27. wash tank 12 s above the floor a bucket type trap is furnished For either type of steam heat flowing steam pressure should be 15 to 25 psig 50 psig maximum Amanually operated steam control valve supplied by others should be installed at a convenient location ahead of the steam supply connection VENTING REQUIRED WITH GAS OPTIONAL WITH STEAM OR ELECTRIC The Hobart UW50 Utensil Washer equipped for gas tank heat is not provided with a flue collar and is not intended to have the flue directly connected to a ventilation system However the products of combustion must be vented to the outside air A vent hood over the entire utensil washer Fig 1 can be employed to vent both the moist air from the wash chamber and the flue gases from the gas tank heat The volume of flue exhaust required for venting moist air and flue gases using a single vent hood over the entire utensil washer must be calculated using the formulas on the next page If a powered means of exhaust is used an electrical interlock must be provided to allow the flow of gas to the utensil washer burner only when the exhaust system is in operation For additional information refer to the National Fuel Gas Code ANSI 2223 1 NFPA 54 latest editions In all cases local codes will prevail EXHAUST DUCT SHOULD BE CENTERED IN HOOD 6 MINIMUM OVERHANG 1 ON ALL SIDES 1 TO 4 7 CLEARANCE STA mn ra a OO
28. well and a 24 second rinse The two upper and two lower wash arms provide thorough cleaning Four rinse arms provide a sanitizing rinse at the end of each cycle The 5 horsepower pump produces 343 gallons per minute The UW50 may be ordered with steam injector steam coil electric or gas tank heat A top mounted electric booster is also available When equipped with a top mounted electric booster a spray hose and nozzle is provided on the left side of the machine On models without top mounted electric boosters the spray hose and nozzle can be installed in the field as an accessory Machines equipped with booster heaters are provided with a pressure regulating valve and a relief bypass which must be installed in the water supply line Machines without booster heaters must have a pressure regulating valve with relief bypass by others if the incoming line pressure exceeds 25 psig Features include sloping strainer system self closing drain with overflow timed fill wash and rinse thermometers and rack with inserts for trays The flat rack can accommodate a 140 quart Hobart mixer bowl INSTALLATION UNPACKING Immediately after unpacking the UW50 check for possible shipping damage If the UW50 is found to be damaged save the packaging material and contact the carrier within 15 days of delivery If the Utensil Washer is lifted with a lift truck place the forks so the drain assembly under the tank is not damaged Prior to installation te
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