Soft Serve Freezer
Contents
1. 0000000 sr _ 9 9555509 gt 0000000 i 5 Universal Control PCB Control X53487 SER X51169 SER Base Board 040040 040 X40785 Software Chip Figure 5 Controls and Systems 18 Model 337 Section 3 Troubleshooting e General Troubleshooting Electrical Troubleshooting Control Faults y jp Aa Model 337 19 Troubleshooting General Troubleshooting Guide PROBLEM PROBABLE CAUSE REMEDY 1 The LCD is blank The unit is unplugged Plug the main power cord into the wall receptacle The fuse is blown or the circuit Replace the fuse or place the breaker breaker is in the OFF position in the ON position No freezer operation with the The beater motor is out on overload Place the power switch in the OFF power switch in the ON position position Press the reset button clear the fault and place the freezer in the AUTO mode Do not use metal objects to press the reset button Cycling on high pressure cut out Allow ten minutes to elapse and then place the unit in the AUTO mode With the unit in the AUTO mode The compressor internal overload is Allow the internal overload to cool of operation the beater motor tripped Check for high head pressure runs but the compressor does refrigerant2. q q q q q q q q iii 1 99 G9 vM NN B NW 9 oz NN X N Be J2 Q 9 lanoon 1 mE 9 Ie om 8 0000000000 y Figure 10 i 2 3 5 NOT SHOWN 7 s HARNESSAWREMANINLOV 045048 Parts Model 337 34 Plate A Decorative X44275 Figure 11 DESCRIPTION UP MENS WASHER 46 SHAKEPROOF 02458 s wureaeuex oooser SWITCH MEMBRANE 5 POS 8 044520 Model 337 35 Parts Control Assembly X48482 PFP iona 0 P 5 1 12 0 abe o E d HD 0 ic y Lr o a d
3. 916600 3LIHM X Ad08 XIIN HSnH8 810610 1 1 0 1 210810 1 00 668070 415 40 ON 1d IWNINYAL MOO1E 00 2260 0 415 d8 9N1d 1VNINHILM901d 200 22 0v0 415 OfYId IVNIAB3 L4920 18 L00 cc 0vO 415 dv TIVNIAB3 L420 18 991760 310d 2 IVNIN431 49018 6567650 51 001 XT 1b 1 l 2LLS v 1d H3dvuos 3av18 cor z 3HOOIT3H 108 c V H31v38 98c10 201 9NIHV38 H3HSVM Po a 1680 ONIHV38 SSVH8 LON 46680 1739 1 8 aes 31V 1d OIN n eje 801 801 801 801 N Z9dH dn I9rszosr Available Separately Model 337 38 Parts List en 912090 ae EET ERUNT E S 9v6rX NON 10OdS 4 INN W WALI 39IAH3S 31VHVd3S V LON IIHS 18868 OL 434307108 COOH 00 1106 OL 801 G60SpX 186 COOH C E A A 96 62X BOLOW V ES 3 1666 NV 3dino AA O 76270 uv3o 926870 18 9 LH YOO0d LIASVD 909670 3SN4 43010H 266100 NI dNV Z 3sfid 662610 NOLLNA 19599 1919 L06870 Sv L X 8 c9dH H3 L Ild H3AHG 669 70 Vv LH c9dH 38f1 L dvO H3AHG e Ri 2077
4. 301991409 YOLOVINOI YOSSIHANOI YOSSIUANOI T 3 xov38 Y 8 MOVd LYVIS HISSIYANOO OL MOTI3A N334O 391515 NMOY8 2LIHM I 391515 X2V18 31IHM 2 a O N MOTI3A N33NO o Lo IM HOLIM 5 305538905 WMd 1331 sov M3ddOH o o 7 30v18 ETT TOI uN3LVdG 3981 N3349 3LIHM 28 e O 3 IIS 34818 res iUnd m MOVIE 3 OSSIAN S Giara 9 35816 SUM NOW 5 1 8 LHOIY 9 TESI 3 100 XIN LHOIN A3HO Q 091 XIN 1331 341415 MOTT3A 3OV18 2 o 31dund a Jav NOHBIN 2 100 XIN 1331 ETE 5 g z 8 m 7H D 6 fall s Ai 31 T 21 11 eu 82d 105102 18 7 i FAS Sie Fe yn J N HE 3LIHM y 20 9 yr cr looper y o MOVIE S 202 318v2 8 e 20 6 v 804 39V38Y3LNI or 205 318v9 Y MOTIZA B ps 2 391915 3078 MOTI3A 3LHM NMONB
5. 1N3NNDO GVOT TINS HOLYW Ol QVOTH3AO 135 gt e 2 18 3 391515 AMA YINYOISNVYL NO MOBNY 40 NOILO38YIO NI LMS HOLIMS N3AMOJSNYSI 3Hl 40 3809 SSVd ISNW 4001 Sous 3mg sanus 1N3HSDO NOIOW 891938 NI 3181 31IHM NOV18 NOSS3NdNOD nmg iai MOTA 0v38 ud OL 38 ISAN 3190 NO CON 2 009 H3ddOH XIN 7 Nw e 391915 N3339 31lHM 28 SINS3NOdWOO 31916 01108 380438 5 7 Quis ONIHONOL A8 313 211916 3LYNIAI3 SININOANOI 2 341315 3ONVYO ILIHM ALVIS 010 Ol 35195 AVA ALORNOBTB OVIS 1 SLM 3 ovid 3 1109 a SLM OVE avs pud P MALVYAdNAL TIYUVO 1331 MW BUNLVYADWAL N3ddOH 984 SIMONA YOLSINGIHI 5 i avaria asn Ut 2 100 XIN 391515 O O AVIGSIO 021 1 3 H SINANOGIOO FOVEA XIN 1331 L MOTTIA MOVIA 5 vi 318V2 NOSAN 2 HOLMS LINA MOSQ OSO 8 5 ES SININOJAO 3OVLIOA 100 XIN 1331 gt z E TO 8 HOLIMS VOTING O Yo HOIH 04 ANNONO 8 o HOLON u31V38 S108AAS m 391316 mls 2 3LIHM
6. 1 N31V3e S108NAS DET T3dOW ONIZIM NOSS3NdWOO SSOJNVO 82d d831NI 3291515 NMONG 3LIHM D NOLIOVdVO LUVIS T3dOW Eon SSO4NVO oy NIN NMONB 31IHM NL 391430 Lavls Old SONIONIM NN 13915 0104 031003 HZ 0S 001 20104 031003 ZH 08 11 021 reu 3 0119vdv9 391515 MOTTI3A N3389 391515 MOTI3A N33H9 N e e 5 ANVYS YOLOVLNOD YOSSIYANOI HOLOVINOD 301991402 HOSSIUANO MOSS3NdWOD ov18 E WN vs AOK YOLIVINOI e HOLOW 28 e x0v18 HO Ud 391915 MOTIZA N33U9 ver NMONB 3LIHM
7. 32 Draw Switch Assembly X38547 33 Control Assembly X45055 34 Plate A Decorative X44275 35 Control Assembly 48482 36 Valve A Expansion 45051 a x Ga oe Y ee kde 37 ISU er ce as 38 Wiring Diagrams cos sna arb wine tt He ae ound 44 CAUTION Information in this manual is intended to be used by Taylor Authorized Service Technicians only Note Continuing research results in steady improvements therefore information in this manual is subject to change without notice September 2000 Taylor All rights reserved 044869 S TAYLOR Taylor The word Taylor and the Crown design a division of Carrier Commercial Refrigeration Inc are registered trademarks in the United States 750 N Blackhawk Blvd of America and certain other countries Rockton IL 61072 Table of Contents Model 337 Section 1 Introduction e Safety e Refrigeration Specifications Installation Instructions y jp Aa Model 337 Introduction Safety We at Taylor are committed to manufacturing safe operating and serviceable equipment The many built in safety features that are part of all Taylor equipment are aimed at protecting operat
8. ND D ND 1 0 E 0 o ND 0 Figure 3 PWM Valve Split During Draw The refrigeration system is activated when either one or both of the draw switches are closed The PWM valve split depends on the side that it is drawn from The PWM valve split is not dependent upon the PWM split that may already be active at the time the draw is made i e the split is set to match each draw See Figure 3 Example 1 Drawing from the center door spout will cause an even split Example 2 Drawing from one side will cause a high low split The high split stays with the drawn side Legend for Figure 3 The first column CASE identifies each of the thirteen draw cases The next three columns L C R identify from which side the product is being drawn ND No draw is being made D Draw is being made The next three columns also L identify whether the refrigeration system is operating because of a previous draw and from which side the previous draw was made at the time the present draw is being made 0 The refrigeration system is not operating at the time the present draw was made 1 The refrigeration system is operating at the time the present draw was made The last two columns LEFT PWM RIGHT PWM identify the resulting PWM operation 0 OFF no PWM operation L Low split H High split Even
9. TOP VIEW ALL CONNECTIONS LOCATED UNDERSIDE OF BASE FAUCET COUPLINGS 2 D2 51 ELECTRICAL HOLE NOTE FIGURES IN PARENTHESES INDICATE MILLIMETERS Figure 1 Model 337 3 Introduction Running Specifications The following are the pressure and temperature settings recommended by Taylor and apply to all models covered in this manual PWM Pulse Width Module Valve Pressure setting HP62 20 to 22 PSI 138 to152 kPa Normal product temperature should range between 18 F to 20 F 7 8 C to 6 7 C Mix hopper and standby temperature should range between 38 F to 40 F 3 3 C to 4 4 C 080918 High Side Head pressure on air cooled units varies depending on ambient temperatures Air Cooled The following chart indicates normal operating head pressures at various ambient temperatures Ambient Normal Operating Temperature Head Pressures A m c ma 7 s E 200 240 069 2848 Pa Note This chart applies to units using HP62 404A refrigerant Introduction Model 337 Installation Instructions Air Cooled Units Air cooled units require a minimum 6 152 mm on both sides Install the skirt provided on the right side of the unit and place the back of the unit against a wall to prevent recirculation of warm air Failure to allow for adequate clearance can reduce the refrigeration capacity of the freezer and possible cause damage to the comp
10. oo i E 1HOHS 9G vS v99 09v ONLS LAN a 98 98 999 099 ANLS LNN so 956 AOLE 4NY NDH HOLIOVdVO ew HSNd 21 3dV18 9 eo MOZ NY4 HOLON ESTE NNEBOLIOVAVO ezio HSNd 21 3dV18 9 tu 0881 LLYM 08 NV4 HOLON ees Pose ZO BOTAVI INVOIHANI 1431 30IS B3ANO7 A 9 93 sTANVd 00 s 6550 H3AOO NHVM 138V1 00 o STOBWAS NO 340 H3MOd MS 138Y7 HOOG 138V1 9 TWAOWSY 0 1001 095260 14VHS 1 35 869750 ANIWA MVYC WAS copy LO X GO 8 Z ONIY O 210910 X GO 91 S DNIY O 161910 MOZO X CO 8 DNIH O 218810 MZZ0 X GO 6 9 0 0 084810 M080 X 8 926870 31800 7 LH HOOC 13VSVO f e 812710 1NIOd 9 1 0 L0 I NOIS3Q dVO vL em NOILdIHOS3G Available Separately Model 337 40 Parts List 089860 LIHOIH MVHC HOLIMS WHV I4TTMVHCrHOLIMS NHV _ Sn Il DNISO1O 4138 HOLIMS 096170 VZLOLS t 3SVHd LYILUVIS EEE 6890 sez cu 3NOO 3SoN anis 655 Q31V 1nSNI V TI3HS as cas
11. zr er 3 17 9611 T3dOW DNISIM NOSSSHdWOO SSOJNVG L SIL 9 9v18 Ens h rs 809 7 yn g 01 30v 3831NI SLIM go cent mme tr 3 ALIHM 341815 NMOUG 3LIHM Ov pr EI AYTAY 18916 E wove ERE 202 l ae MOT13A MOLIOVdVO LUVIS EY l A 13000 ONINIM NOSS3HdWOO SSOINVO 3078 O LIHM NMOY8 FN 5 3M1S MOTIZA 3NT9 MOTTIA 1 2 NMOY8 NMOHS 31IHM NL IVNYAINI x o MOTA MOTTA ST 8 g HOLIMS 391515 ALIHM NMOY8 ALISNO3IS 301430 18 16 Old SONIGNIM CNW 9 5 SONICNIM NNA 18915 MOTTA a E 3 NMOY8 A Eww 2 NOIOW 031002 NIV HZ 05 LIV 001 E 4 ALIHM OLOW 031003 NIV ZH 09 11 021 2 9ud MOTTA 4 5 e HOLIMS y2v18 OLIVA NAY HOLIMS 1331 i WALSAS mm NNO NV ovia ano B 8 AONYHO
12. 3N18 MOTIZA IN18 MOTIZA NMOS MOTI3A MOTIZA 8 g o 1 HOLIMS 4 4 2 lala 3LHM NMONB A1Mnoas MOTA a 51512 MOTISX m Sud 2 2 8 WW 94d MOTI3A 5 39NVNO wove HOLIMS 9 Gau HOLIMS 1331 YINYO AISNVUL WALSAS aH e NATA ZONVYO 3 wove SNOILIQNOO 319NIS AIVANIIA 41041044 SYOLOW Y431W38 MOSS3udNOO 914 331938 HOLVIN NOLON 831938 40 AN388N9 1103 JHL OL 135 v H3AHOJSNVHI JHL NO 3Hl 40 NOILO3BIQ NI MN3AHOJSNVHI INJ3HHDO JHL 40 3909 SSVd LSNW 4001 IN3BB O YOLON 9431938 NI 3NIM 391515 31IHM 3OV8 HOV3 I OL G3123NNOO 38 LSNW S318Vv2 NO 3HIM Z SIN3NOdWOO 31915 01105 ONIIGNVH 340338 LINN ONIHONOL 1 DILVIS 3 SINJNOdWOO 3494 ANOS OL 39vWva 3SNVD AWW ALIDINLOATA 011415 1 1583101 3NOLYN3dW3l 1344989 LHOIY 3801933331 1333498 1331 884 3501933431 N3ddOH 933 538084 YOLSINYSHL ww ASNI PS OS HOLIMS 350553549 a SIN3NOdWOO 39VLIOA 4 GNNOYD HOLIMS WO1Y3AO T ofo
13. i bes bbb b 4 Figure 12 OER ROR 0275 2 SCREWsXiSLHEXHD TYP B 009894 6 CONNECTOR BX 3e STR 01458 5 BLOCKTERMINAL7 POLE GAN 024156 s SOREWBXIDPANHDTYPA 017986 Parts 36 Model 337 Valve A Expansion X45051 Figure 13 ITEM DESCRIPTION PART NO ITEM DESCRIPTION PART NO SCREW 8X1 4 SL HEX HD TYP B 009894 BRACKET MTG PULSE VALVE 045879 COIL PULSE EXP VALVE 044335 27C VALVE A EXP PULSE PARTIAL ASSY 45052 TEE 3 8S X 3 8S X 1 4S COPPER 016441 Model 337 37 Parts Parts List W3ISASSSO4Nvd so 2560950 16 38 30 gor 62980 S 2XV1X61 0V H3SN3GNOO 109 068 802 sor 25180 0 41186 NDH HOLIOVdVO 1 09 062 802 cor 4900 HOSS3HdWOO 1HVIS AV13H 1 09 062 802 cor Lv 80900 066 411881 861 1 15 HISNNDIL 69 70 9SSHV QXZ06vrec VHV HOSSdHdlWOO YHS 801 19 201490 O lL HOSSIHdNOO LHVIIS AV THH YHS 801 701 70 554 4 0 F YHS 801 662200 YOSSAYdNOO IWNINYAL YAAOOF YHS 801 501 70 84260 022 40109 1 15 YHS 10 102490 Vv LH O 1L YOSSIYAINOO 812910 LNIOd 9 dI 0L0 L N9IS3Q dVO 1 71 009 41 0 6c0 0P00P0 71 9 OZ NO88IH 3 18VO 80 070070 4189 010 070070 1 8 908 NO88IH 318VO 120610
14. keys will increase or decrease the viscosity setting 0 1 amps respectively While the beater motor is on the displayed Present Viscosity is updated continually When the beater motor is off this value is zero Note The term amp used here for viscosity measurement is not the same as the term amp as would be measured by an ammeter Note The barrel temperature must be raised gt 25 F to lower the amp draw Before setting viscosity the unit must be sanitized primed and placed in the AUTO mode As the product is freezing monitor the amp draw of the beater motor After a few minutes of freezer operation begin taking product samples When the product reaches serving appearance note the amp draw of the beater motor Set Screen C to reflect the amp draw that was witnessed when servable product was achieved VISCOSITY SETTING AMPS 5 0 AMPS 0 0 PRESENT Pressing the MENU SEL key will accept the viscosity and return to the Service Menu Set Standby Temperature Option D This option allows the technician to adjust the barrel temperature at which the compressor will turn on inthe Standby Mode The factory default setting is 30 F 1 C The minimum setting is 28 F 2 C and the maximum setting is 41 F 5 C The differential between cycle off and cycle on is 2 F Pressing the WASH KEY andthe AUTO keyincrease and decrease the temperature by 1 respectively Controls and Syst
15. 66 00 a osseo LAVHS co 0 so SLIMOVd 921 SAW HAZILINYS e r eesueo 09 09 Orc 80c V0c 310d amp AV dM O O EA 30VJH3LNI V 80d vor uaseoevx IVSHANINN V 894 vor eo e oox 3WWMI3OSWIHO E _ A A S pnjou 00 1 06 OL HOIHd zie _ ugs ieorx 1OH1NOO V 80 i sm ZOAN 3tHVMLJOS dIHO smo HSMONI 010 ZOAN 08 ee eee 13S dIHO 3HVM13OS dIHO AW1dSIG ZOAN 3HVMLJOS dIHO om co sex 0 0 0 040 04040 3WWMI3OSIHO leda OA RPM DIESES 22 35 616 630 dn oozizoer zie u3s evesx ZOAN TOHLNOO V 804 eo 3908 8 5 b2MVZ A3 TINA eo aw 3908 8 9 X ss ENEE 101 13HHVE HOLSINH3H1 390Hd ss HOLSIAH3HI V ss noe 101 H3ddOH HO SINH3H1 390Yd er 1 H3ddOH HOLSIAH3H1 co a InOXM v38Odd a 5 v 31 70 930 V 31V1d LUVd NOILdIlHOS3G Available Separately Parts List 41 Model 337 808610 JOAld 9ILSV Id H3HSVM 019 70 166 SS INTIA NIVH L O3GIA 5 955770 OVA0rc 58 5 3S If1d dX3 3A1
16. Www H LIMS LIWI1 3UNSSIYd 33953405 HOLIMS vOTN3AO SLN3NOdNOD 04 ANNONO MOLON 531939 SIO8NAS 9 11 130090 DNIYIM NOSS3NdWOO SSOINVO HOSSIVANOI 824 OL 3831NI 341315 NMON8 31IHM WOYW Avus davis A LYVLS 7390 NOSS3MdWOO SSOINVG NMONS 31IHM 301430 1891 214 SONIGNIM 15 ONIYIM Y0SSIYANOI HISHNIIL YOLSIS3Y YOLIDWAVO YOLIVINOI YOSSIYANOI z um 21 1N3Ad in03 i YOLOW 031003 IV HZ OS LLVM 001 uOLOW 031003 NIV ZH 09 021 ma gt i 9 A 13an 391915 MOTI3A N3349 341415 MOTI3A N33349 035 AWVYS Model 337 044553 27
17. AHA2490ZXD AH556E BOOT CAPACITOR 031314 INSULATING Model 337 29 Parts 337 5 Figure 7 Model 337 30 Parts 337 Panel Identification Parts Identification ITEM DESCRIPTION PART NO LOUVER SIDE 017471 BUSHING PANEL 013289 TRIM REAR CORNER L 044280 COVER HOPPER 14 QT GRAY 041682 GRY ITEM DESCRIPTION PART NO PANEL SIDE 048487 ANGLE PANEL R 044285 TRIM FRONT 044286 TRAY DRIP 16 7 8L X 5 1 8 020157 6 PANELREAn s TRIMREARCORNERR 064281 s scnEw waz0kseRHMSLS 0116 Model 337 31 Parts Beater Door Assembly Figure 8 O RING 1 4 OD X 0 70 W SCREW ADJUSTMENT SS xs 6 GASKET DOOR HTa BECA STAINLESS HANDLE 5 32 Model 337 Draw Switch Assembly 8547 Figure 9 ITEM DESCRIPTION PART NO BRACKET A SWITCH X38252 SWITCH A DRAW TWIN TWIST X39269 SWITCH LEVER SPDT 11A 125 039252 ITEM DESCRIPTION PART NO 6 BRACKET A SPRING RETURN X38257 SPRING RETURN RIGHT TWIN 038924 8 ARM SWITCH DRAW RIGHT 038650 9 PIN PIVOT DRAW SWITCH 03844 Model 337 33 Parts Control Assembly 45055 69550599 d 55 422240 oo 0 Spi 55555525 a o 20 46 S CY 43
18. MONIA B E CAMS a 9udg MONZA c HOLIMS qas HOLIMS 1331 YINYOASNVUL WILSAS LIMA e NOM e MOVIE 8 8 39NVNO 39NVNO 4 044553 33G Ww DIO o x MOTIBA NS3UO 311815 MOTHA NSSUO 34 1035 ANNOYS yovie MOLOVINOD YOLOVINOI 30199102 80553405 4055 38402 wove IL H 11 O 11 QVOTH3AO 10418 SNOILIGNOD ONISVHd 3719NIS AUVNIYd e adn MOVIE 31041044 e 1 SYOLON YILVIA ANY YOSSAYdNOD 8 0113 9 NMOM8 3LIHM GVOTN3AO YOLOW MOLOVINOD 931 38 YOLOVINOO YISNIONOI HOION SaLvaa MOLOW 831938 SOLOW u3LV38 MOLOW N31V38 YALVI8_3HI 40
19. code used to assemble the machine and the freezer serial number The freezer B O M screen is displayed upon selecting this option ENTER FREEZER BOM 033727B000 Pressing the OFF lt or STBY gt keys will move the cursor left or right respectively with wraparound When the correct freezer B O M has been entered pressing the MENU SEL key displays the freezer serial number ENTER FREEZER SN J0000000 Pressing the OFF lt or STBY gt keys will move the cursor left or right respectively with wraparound Pressing the WASH or AUTO keys increase or decrease respectively with rollover the selected character When the correct freezer serial number has been entered pressing the MENU SEL key returns to the Service Menu Controls and Systems Model 337 Pulse Width Modulation The central feature of the Model 337 is the precise control of the refrigerant flow The flow of the refrigerant is distributed between the freezing cylinders on the basis of cylinder cooling load This precise control is achieved by using Pulse Width Modulated PWM valves as the refrigerant control devices The universal control regulates the amount of time each PWM valve is open thereby controlling the amount of refrigerant that flows through each freezing cylinder Taylor uses the term split to refer to the amount of time each PWM valve is open in relation to the amount of time the other PWM valve is
20. gas under pressure is potentially hazardous AN fill any refrigerant cylinder completely with liguid Filling the cylinder to approximately 8096 will allow for normal expansion 3 Refrigerant liguid sprayed onto the skin may cause serious damage to tissue Keep eyes and skin protected If refrigerant burns should occur flush immediately with cold water If burns are severe apply ice packs and contact a physician immediately Taylor reminds technicians to be cautious of government laws regarding refrigerant recovery recycling and reclaiming systems If you have any questions regarding these laws please contact the factory Service Department WARNING R404A refrigerant used in conjunction with polyolester oils is extremely moisture absorbent When opening a refrigeration system the maximum time the system is open must not exceed 15 minutes Cap all open tubing to prevent humid air or water from being absorbed by the oil If the crossed out wheeled bin symbol is affixed to this product it signifies that this product is compliant with the EU Directive as well as other similar legislation in effect after August 13 2005 Therefore it must be collected separately after its use is completed and cannot be disposed as unsorted municipal waste The user is responsible for returning the product to the appropriate collection facility as specified by your local code For additional information regarding applicable local laws
21. high pressure cut out switch reset button interface board fan To operate the left PWM valve 11 power source high pressure cut out switch reset button interface board left PWM To operate the right PWM valve 11 power source high pressure cut out switch reset button interface board right PWM To supply power to the interface board L1 power source 16 volt transformer terminal A on the interface board To supply power to the universal control board L1 power source 16 volt transformer terminals 1 and 2 on the interface board J8 terminals 1 and 2 on the universal control board J1 Model 337 23 Troubleshooting Control Faults When a specific fault occurs during the AUTO or STANDBY modes the unit will operate in the mode indicated FAULT MODE FUSEMTRIOOMPIPWM For further information see Fault Description Screens page 9 Troubleshooting 24 Model 337 y I jp Aa AO EN gx i Section 4 Parts e Warranty Explanation e Exploded Views e Parts List e Wiring Diagrams Model 337 25 Parts Warranty Explanation Class 103 Parts The warranty for new equipment parts is one year from the original date of unit installation with a replacement parts warranty of three months Class 212 Parts The warranty for new equipment parts is two years from the original date of unit installation with
22. number chosen will be the percentage of time refrigerant can flow per individual seconds of compressor operation The factory default setting is 80 and can be increased or decreased by increments of 10 by using the arrow keys This allows refrigerant to flow 80 of a one second period Pulling only the left draw handle will allow 70 ofthe refrigerant to flow through the left freezing cylinder and 10 through the right freezing cylinder Pulling only the right draw handle will allow 70 of the refrigerant to flow through the right freezing cylinder and 10 through the left freezing cylinder By pulling the center draw handle the refrigerant flow will be divided equally 40 refrigerant flow through the left freezing cylinder and 40 through the right freezing cylinder Press the MENU SEL key This screen is used to set the low percent for the PWM duty cycle The factory default setting is 10 and can be increased or decreased by increments of 5 The minimum setting is 5 and the maximum setting is 15 If the low percent is set at 5 and the duty cycle is set at 80 the freezing cylinder being used will have 75 refrigerant flow and the cylinder not being used will have 5 refrigerant flow when the draw handle is pulled PWM DUTY CYCLE MIN DUTY CYCLE 10 Pressing the MENU SEL key accepts the setting and returns to the Service Menu Edit Unit ID Option J This option allows the technician to enter the factory Bill of Materials
23. overcharge stuck pistons not operate or tight bearings The compressor is burned out Replace the compressor The compressor is improperly wired Check the wiring against the diagram Low line voltage Check the line voltage at the terminal block Locate the cause of the voltage drop The compressor contactor is Replace the compressor contactor single phasing The compressor hums The compressor is improperly wired Check the wiring against the diagram intermittently but will not start Cycling on overload Low voltage supply 208 230 voltage must be applied The PWM setting is incorrect Adjust the PWM setting according to instructions in this manual The product is too stiff The viscosity is set too cold See the Operating Screen Displays section in this manual to reset the control There is inadequate mix in the hopper Fill the hopper with mix The product is too soft The viscosity control is set too warm See the Operating Screen Displays to reset the control The scraper blades are worn Replace the blades Product is being overbeaten in the Remove the overbeaten product and freezing cylinder prime the unit according to instructions in the Operator s Manual Troubleshooting 20 Model 337 PROBLEM PROBABLE CAUSE REMEDY 7 The liquid line is frosted The dryer or the tubing is restricted Replace or remove the restrictions 8 No product is being dispensed The control switch is in
24. please contact the municipal facility and or local distributor Introduction Model 337 337 Specifications Freezing Cylinder For exact electrical information always refer to the data label of the unit Two 2 8 quart 2 7 liter Air Cooled Mix Hopper PP Minimum 6 152 mm on both sides Install the skirt Two 14 quart 13 2 liter provided on the right side of the unit and place the back of the unit against a wall to prevent recirculation of Beater Motor warm 0 HP Water Cooled Refrigeration Unit Water inlet and drain connections under the side of the One 9 500 BTU hr R404A base 3 8 FPT Separate Hopper Refrigeration SHR One 400 BTU hr R134a BTU s may vary depending on compressor used Dimensions Width 20 7 16 519 mm 31 3 16 792 Height 38 3 4 984 mm One dedicated connection Counter Clearance 4 101 mm mounted on standard legs Max Min Circuit Approximate Weights Net 446 Ibs 202 3 kgs Crated 506 Ibs 229 5 kgs Volume 29 1 cu ft 81 This unit is designed and constructed to meet stringent safety and sanitation requirements for NSF and other food service regulatory agencies 5 1 4 2 1 4 133 60 36 1 8 937 WATER OUT TR il E 34 1 2 816
25. split PWM Valve Split Caused By Compressor Cycle Timer The last split condition that is possible in the AUTO mode is when the system is started by the compressor cycle timer In this instance the split is even Note Inthe STANDBY mode the PWM valve split is always even Controls and Systems Model 337 Refrigeration System The criteria used to cycle off the refrigeration in the Model 337 are different from those used in other Taylor equipment System cycle off depends on both product viscosity and product temperature For system cycle off to occur the following conditions have to be met 1 The product viscosity must be greater than the viscosity set point 2 The freezing cylinder temperatures must be at or below the balance temperatures 3 Both draw switches must be open draw valves closed If any of the above conditions are not met the system will continue to run until they are met The balance temperature is a set point that is automatically set by the control at the first viscosity cycle off after the AUTO mode is activated A balance temperature is calculated for each freezing cylinder The calculation of the balance temperatures depends also on the temperature of the cylinders at the time that the freezer is placed in the AUTO mode If the cylinder temperature is greater than 25 F 4 C or less than 10 F 12 C the balance temperature is equal to the freezing cylinder temperature at fi
26. the OFF Place the unit in the AUTO position position There is a freeze up in the mix feed Adjust the hopper temperature Refer tube to the Operating Screen section in this manual The freezer is experiencing a fault See page 8 of this manual to remedy the fault Incorrect beater rotation Rotation Reverse any two of the three incoming should be clockwise when viewed power lines three phase units only from the front of the unit The circuit breaker is out Check the breaker or fuse Faulty draw switch Repair or replace the switch Inadequate mix in the hopper Fill the hopper with mix 9 Scored freezing cylinder walls Missing or worn front bearing on the Install or replace the front bearing freezer door The beater assembly is bent Replace the beater and correct the cause of insufficient mix in the freezing cylinder 10 Product is not feeding into the There is inadequate mix in the hopper Fill the hopper with mix freezing cylinder The feed tube is improperly installed Correctly install the feed tube according to instructions in the Operator s Manual AUTO position There is a freeze up in the mix inlet Adjust the hopper temperature Refer hole to the Operating Screen section in this manual 11 The drive shaft is stuck in the Mix and lubricant have collected in the Brush clean the rear shell bearing drive coupling drive coupling area regularly The corners of the drive shaft and o
27. 10 MEOW X GO 8 9 2 e 091 X MVEO V 3ATVA o 00 2 0910 X GO 9L 9 NIH O Pess i 8902X LON e EBEN 21910 X GO 8 8 ONIH O EE 808820 nee SS 8 81 2 91 S LNN __ i 299650 1N3ALSnrav Magos __ 3 e 2 8910 OHNA os MOZO X GO 801 YHS co 901 318v1Snrav 310NVH cou mx 3 1aNvH HOOG 1 030 cou 1 essvro 165 DNIHIM NYHOVIA so 8 CINDIT AYIASIA 00 vzeseo 5318 0 1 19930 HOIYd 6666016 TOAWAS 00 HOLIMS w SS NIM1 030 1V030 600610 44 LSNI NV319 1V030 e AVHO 109 H3ddOH H3ACO o Wie n ii 8 2 1 X 3AIHO ONMANOI 31vadn 55910 5 ALO LUVd NOILdIlHOS3G em Available Separately Parts List 39 Model 337 P r 48880 14319 1 18 13 co 1 9 JAIS TANYA i 6 INOH4 V T3NYd pe qp __ IA ONO dltiO NVd rr eweo KITV 0 w a desio X 8 ONIH O co ec
28. 7 Controls and Systems Operating Screen Displays The POWER SWITCH OFF screen indicates that the power switch is in the OFF position POWER SWITCH OFF The normal operating screen will display the current mode of operation and the level of mix in each mix hopper The power switch is in the ON position MODE OFF MIX Operator Menu The Operator Menu allows the operator to access operational information and to set non critical functional parameters The Operator Menu also allows access to the Service Menu Note Only service technicians who know the access code may use the Service Menu Operator Options A Exit From Menu B Fault Description System Information D Current Conditions E Service Menu Pressing the OFF lt key will move the cursor one position to the left Pressing the STBY gt key will move the cursor one position to the right Both keys include the wraparound feature This means that when the cursor reaches the end of the option any further movement in the same direction causes the cursor to wraparound to be placed at the opposite end of the option listing As the cursor is moved under each menu option the third line of the display shows a description of that menu option Pressing the MENU SEL key selects the menu option displayed OPERATOR MENU ABCDE EXIT FROM MENU Fault Description Option B This option lists any faults detected by the control and al
29. BE PROPERLY GROUNDED FAILURE TO DO SO CAN RESULT IN SEVERE PERSONAL INJURY FROM ELECTRICAL SHOCK Each freezer requires one dedicated power supply Check the data label on the freezer for fuse circuit ampacity and electrical specifications Refer to the wiring diagram provided inside the control box for proper power connections In the United States this equipment is intended to be installed in accordance with the National Electrical Code NEC ANSI NFPA 70 1987 The purpose of the NEC code is the practical safeguarding of persons and property from hazards arising from the use of electricity 050920 This code contains provisions considered necessary for safety Compliance therewith and proper maintenance will result in an installation essentially free from hazard In all other areas of the world equipment should be installed in accordance with the existing local codes Please contact your local authorities Stationary appliances which are not equipped with a power cord and a plug or other device to disconnect the appliance from the power source must have an all pole disconnecting device with a contact gap of at least 3 mm installed in the external installation Introduction Model 337 y jp Aa Section 2 Controls and Systems Operating and Service Screen Displays Pulse Width Modulation Refrigeration System PWM Split Flow Chart Universal and Interface Boards Control Overview Model 337
30. SOLOVIN 431v38 NOLOVINOO u3SN3GNOO NOLOW 1 831938 NOLON Y3LV38 341415 Ho MOV18 391915 MOTI3A N33NO O 391515 3018 31lHM 391515 EW DMP MOSS3NdWNOD 1431 MOTIRA HOVE eure ONI1009 YIAJOH MOVIE TT TOI 331939 291915 98 E Foro AMAS 7 341315 8 e 15 39NVNO 31IHM 5v18 31IHM 32V 8 8 2v1a 3 MOSS3HgAOO PIS m 391915 3LIAM MOVIE a E o b xS 1 5 QvdA3 100 7 NOVA XIN 1331 391915 MOVIE 2 m a 318v2 NOBBIN 2 100 XIN 1331 EE 5 2 z 5 5 METTI oin m a 391318 i4 mls 3LIHM 3148Nd if zr J or 2 82d 3IIHM 32v18 yN e m A SEHEN c lt 23 UN 9r cc cmn z coool 3amis 202 318v2 NOSSIY 5 20 6 89d 39 3831 Pm ma 205 318vO yn MOTI3A p a i 2 341416 3N18 MOTIZA 81 31IHM NMOHS 3018 MO 134A 341315 3018 MO TI3A NMOY8 B MOTI3A MOTIZA m c m Fa 577 HOLIMS D a lal Pi 8 3 m WS 844
31. VA 899220 S 0 Snxnv SHNIVW 0 910 70 06 S LXT4IN v 1 SS309V 3A1VA al soi X 147 1 SSIDOV INIVA es 2 30108 B E X 1 SS3DOV 3NIVA 9810 0333 HILNO ONIH 0 weix 10 0384 3901 0 9 090 3801 0333 Y3NNI ONI8 0 8 H3NNIO333 V o 0 teo Y H3NHOO vati Wil r oso H3NHOO UV Ne ico neo o pea 4800 8 1 S X 18 91 2 1 0 1 ww VAO LNOO SNVHL 2 seo NO INON 1444 319901 1 8 60 AV 1dSIQ 1 8 ow 93910554 Orb 38NSS3Y4 HOLIMS 8 w oso 1 8 S 8 NLIE SEV N LI LOdS H3A T HOLIMS 9092 NWd 3 lLdv LZ 1X Ov M3HOS 0 vee 18111 NIMI HOLIMS MYHO L330 v8 r 1SIML NIMI MVHQ V HOLIMS Pc r teso 1SIML NIMI 1HOIH NUNLIH ONIHdS e r esso ASIML NIMI 133T NYN13H ONIHdS e a 00 LXSPO XSLE NOISNILX3 ONIHdS 01108660 2 8 8 pea c veo H3NIv13H 8 verso HOLIMS PN te 8 66 866 HO1IMS V 28288 NENAS TI 55910 5 LUVd NOILdIlHOS3G iS in Avai
32. a replacement parts warranty of twelve months Class 512 Parts The warranty for new equipment parts is five years from the original date of unit installation with a replacement parts warranty of twelve months Class 000 Parts Wear Items no warranty CAUTION Warranty is valid only if required service work is provided by an Authorized Taylor Service Technician NOTE Taylor reserves the right to deny warranty claims on equipment or parts if a non approved refrigerant was installed in the machine system modifications were performed beyond factory recommendations or it is determined that the failure was caused by neglect or abuse Compressor Warranty Disclaimer The refrigeration compressor s on this machine are warranted for the term indicated on the warranty card accompanying this machine However due to the Montreal Protocol and the U S Clean Air Act Amendments of 1990 many new refrigerants are being tested and developed thus seeking their way into the service industry Some of these new refrigerants are being advertised as drop in replacements for numerous applications It should be noted that in the event of ordinary service to this machine s refrigeration system only the refrigerant specified on the affixed data label should be used The unauthorized use of alternate refrigerants will void your compressor warranty It will be the owners It should be noted that Taylor does not warrant the refrigerant
33. be Left Mix Low Probe Right Mix Low Probe Inputs Compressor Contactor Coil Beater Motor Contactor Coil Left PWM Valve Right PWM Valve Hopper Refrigeration Condenser Fan J7 Power Switch Outputs Security Switch Left Draw Switch Right Draw Switch Hopper Thermistor Probe Right Barrel Thermistor J9 Left Barrel Thermistor Internal Connections Interface Board 50 pin connector Primary communication between the Universal and Interface boards Signals from the following devices are sent via this connection Beater Overload Right Mix Low Left Mix Low Right Mix Out Left Mix Out Security Switch Power Switch Detect Right Draw Switch Left Draw Switch Interface Board 50 pin connector Right PWM Solenoid Left PWM Solenoid Beater Motor Main Compressor Condenser Fan Hopper Compressor Signals from the following devices are sent via this connection Hopper Thermistor Probe Right Barrel Thermistor Left Barrel Thermistor For a description illustration of these boards and their connections see the Control Overview section in this manual Model 337 17 Controls and Systems Control Overview Interface X44295 SER Board 38062 5 M1 040040 028 46 Oooool KeyPad Membrane Switch 044520 040040 010
34. ce Menu Beater Off Delay Option G This setting will allow the beater motor to continue running after the compressor has cycled off The factory default setting is zero however the beater motor can be adjusted to run after the compressor cycles off The minimum setting is 0 and the maximum setting is 10 The beater off delay can be increased decreased by increments of 1 second BEATER OFF DELAY TIME 0 SECONDS Pressing the MENU SEL key accepts the setting and returns to the Service Menu Compressor On Delay Option H This setting will allow the beater motor to start before the compressor activates Standard operation allows the beater motor and compressor start simultaneously therefore the factory default setting is zero However the compressor delay can be adjusted so the compressor is activated after the beater motor starts The minimum setting is 0 and the maximum setting is 10 The compressor on delay can be increased or decreased by increments of 1 second COMP ON DELAY TIME 0 SECONDS Pressing the MENU SEL key accepts the setting and returns to the Service Menu Model 337 11 Controls and Systems PWM Duty Cycle Option The PWM Pulse Width Modulation DUTY CYCLE setting controls the length of time the refrigerant will flow through each barrel freezing cylinder PWM DUTY CYCLE DUTY CYCLE 80 The PWM duty cycle can be adjusted to a setting between 30 90 The
35. d Use lubricants recommended in the Operator s Manual 17 The mix in the hopper is too cold The temperature is out of adjustment Adjust the hopper temperature setting Refer to the Operating Screen section in this manual 18 The mix in the hopper is too The temperature is out of adjustment Adjust the hopper temperature setting warm Refer to the Operating Screen section in this manual Warm mix has been put in the hopper The mix temperature should be below 40 F 4 C The hopper cover and or gasket are Install the cover and the gasket not correctly position properly Troubleshooting 22 Model 337 Electrical Troubleshooting The following are the paths of power to be followed WASH Mode To operate the beater motor L1 power source power switch high pressure cut out switch reset button interface board coil of the beater motor contactor AUTO Mode To operate the beater motor L1 power source power switch high pressure cut out switch reset button interface board coil of the beater motor contactor To operate the compressor L1 power source power switch high pressure cut out switch reset button interface board coil of the compressor contactor To operate the mix hopper cooling compressor L1 power source high pressure cut out switch reset button interface board mix hopper cooling compressor To operate the fan 11 power source
36. elected code digit When the correct access code has been entered press the MENU SEL key to display the Service Menu Pressing the MENU SEL key with an invalid access code returns the display to the Operator Menu ENTER ACCESS CODE Model 337 Controls and Systems Service Menu The Service Menu option allows a trained service technician to access and modify critical operating parameters for the machine SERVICE MENU ABCDEFGHIJ EXIT TO OP MENU The Service Menu options are listed in the table below Exit to Op Menu Temperature Scale Viscosity Setting Standby Temp Hopper Temp Compressor Cycle Time Beater Off Delay Compressor On Delay PWM Duty Cycle Edit Unit ID Temperature Scale Option B This option allows the service technician to choose the scale which the machine will display temperatures To select the Centigrade scale press the STBY gt key to move the cursor under the letter on the LCD To select the Fahrenheit scale press the OFF lt key to move the cursor under the letter Fa TEMPERATURE SCALE TEMP IN Pressing the MENU SEL key accepts the selected scale and returns the LCD to the Service Menu Viscosity Setting Option C The viscosity setting option allows the service technician to adjust the viscosity at which the compressor is deactivated during the AUTO mode of operation Pressing the WASH or AUTO
37. ems 10 Model 337 The SET STANDBY TEMPERATURE screen displays the current temperatures of both freezing cylinders SET STANDBY TEMP STANDBY TEMP 30 0 30 0 PRESENT Pressing the MENU SEL key accepts the setting and returns to the Service Menu Set Hopper Temperature Option E The exit temperature of the hopper cooling system refrigerant can be adjusted through this screen The current temperature is also displayed The factory default setting is 40 F 4 C The minimum setting is 30 F 1 C and the maximum setting is 40 F 4 C Pressing the WASH or AUTO keys increase or decrease the temperature by 1 2 respectively The differential between cycle off and cycle on is 12 F 6 C SET HOPPER TEMP HOPPER TEMP PRESENT Pressing the MENU SEL key accepts the setting and returns to the Service Menu Compressor Cycle Time Option F This setting determines the length of time the compressor will remain off after a freeze cycle is complete The numbers represent minutes and can be adjusted for a minimum of three minutes to a maximum of 16 minutes The factory default setting is 10 minutes The compressor cycle time can be increased or decreased by increments of one minute The compressor OFF cycle time should not allow the OFF cycle temperature to rise more than 2 COMP CYCLE TIME CYCLE TIME 10 MIN Pressing the MENU SEL key accepts the setting and returns to the Servi
38. erature has exceeded 41 F 5 C BARREL OVER TEMP The freezing cylinder temperature has exceeded 41 F 59C POWER FAILURE There has been a power failure System Information Option C This screen displays two screens The first screen displays the version of software the machine is using SOFTWARE VERSION 337 CONTROL VERSION 1 00 Pressing the MENU SEL key a second time will display the B O M and the serial number which is programmable in the Service Menu under option J Edit Unit 1 D 033733B000 40000000 return to the Operator Menu press the MENU SEL key Current Conditions Option D This screen indicates the current viscosity hopper and barrel temperatures This screen also displays the number of draws that have been made from each freezing cylinder If a product is drawn from the center door spout one draw is added to both the right and left draw count When the unit is taken out of the AUTO mode the number of draws will reset to zero BARREL HOPPER DRAWS 41 0 40 0 3 41 0 40 0 3 0 0 Press the MENU SEL key once to return to the Operator Menu Service Menu Access Option E Enter the Service Access Code 8333 to obtain menu options for servicing the equipment The OFF lt and STBY gt keys will move the cursor left or right respectively with wraparound Pressing the WASH or AUTO keys increase or decrease respectively with rollover the s
39. ght freezing cylinder temperatures is less than 10 the left and right PWM valves will operate at an even split Example 2 If only the right freezing cylinder is below 25 F 4 C and the difference between the right and left freezing cylinder temperatures is more than 10 the right PWM valve operates at the low split and the left PWM valve operates at the high split If the difference between the right and left freezing cylinder temperatures is less than 10 the left and right PWM valves will operate at an even split Example 3 If both freezing cylinders are at or above 25 F 4 C or both freezing cylinders are below 25 F 4 C the right and left PWM valves operate at an even split If during the AUTO mode one barrel temperature is more than 10 F 12 C above the other barrel temperature the valve for the warmer barrel will be modulated at the high split and the valve for the colder barrel will be modulated at the low split 070321 Model 337 13 Controls and Systems PWM Valve Split During Draw Refrigeration System Operating Case Prosent Draw From Because of Last Draw From Left PWM _ c R L c R 2 2 2 ND ND 0 o ND o 0 1 ie a ND ND p a A rr CAM qn 2290 EA ND D 1 o E
40. lable Separately Model 337 42 Parts List ova 60 cio 929 X LEAVE AITINA __ 1 esso A0 amp 4n NNY HOLIOVAVO emo 1 esso 1 0 2 022 MOO NV3 HOLOW HOSS3HdWOO 1 09 092 022 cor 09 0 HOSS3HdWODO LHV 1S AV 13H HOSS3HdWOO 1 09 092 022 cor 110 066 411881 61 LHV LS HOLIOVdVO EA 1 iiiiiiiii t sso 86 5391055409 JUNSSIHA HOLIMS Pte 04 3av1a S NVI ptr 1 0 MSZ HOLONN Es dio lc o O M HISNIONOO 31vadn 55910 SLHVd ALO LUVd NOILdIlHOS3G Available Separately Parts List 43 Model 337 YTd HOLON M3LV38 HOLVA HOLON NU31v38 40 1N388N9 TINS JHL HOLVW 135 H3WNO4SNVSI JHL NO JHL dO NOILO3YIO JHL NI W3AHOJSNVHI IN3HH O 3409 JHL NAHL SSVd LSNW 4001 1N348N9 NOLOW 331938 3Hl NI 3NIM 381315 3LIHM MOVI19 HOW OL Q3103NNOO 38 LSNW S318VO 8 NO 3HIM Q3H 2 SIN3NOdWOO 3191 01105 ONITOQNVH 340338 LINN ONIHONOL A8 ALINYLIIIA 211915 3LYNIWIT3 SINJNOdAOD ALVIS 01105 OL 39VWVG 3SnVO AWA ALIDIYLIITI DILWIS S3LON 3MOLVN3dW3l 138398 lHOIN 739 3NDLVN3dW3l T38NV8 1431 Sid 1 4 N3ddOH 93d 538084 YOLSINYSHL
41. lows the operator to clear them from the system When a fault is detected it will be displayed on the second line of the LCD Pressing the MENU SEL key will display the next fault found or return the display to the Operator Menu if no additional faults exist If the OFF key is pressed when a fault is displayed all faults that have been corrected will be cleared from the LCD upon returning to the Operator Menu To return to the Operator Menu press the MENU SEL key Note A beeping tone will sound to alert the operator of afault To discontinue the tone access the Operator Menu and enter Option B Correct the fault then press the OFF lt key and the tone will stop FAULT DESCRIPTION NO FAULT FOUND CLR Controls and Systems Model 337 Possible Fault Descriptions NO FAULT FOUND No fault is found BTR OVLD OR HPCO The beater motor has gone off on overload or the compressor has reached its high pressure cut out point COMP ON TOO LONG The compressor has been running more than 11 minutes BEATER OVER CURRENT The beater motor will not run due to high current FUSE MTR COMP PWM The fault is caused by either the fuse motor compressor or PWM valve HOPPER THERM BAD The hopper thermistor probe is faulty LEFT BRL THERM BAD The left freezing cylinder thermistor probe is faulty RIGHT BRL THERM BAD The right freezing cylinder thermistor probe is faulty HOPPER OVER TEMP The hopper temp
42. open There are three types of splits high low and even For example if the left PWM valve is described as operating at the HIGH split it is passing more refrigerant open longer than the right PWM valve In this case the right PWM valve is operating at the LOW split If the left PWM valve is described as operating at the EVEN split it is passing as much refrigerant open for the same amount of time as the right PWM valve Note Whenever the refrigeration system is active both PWM valves are active The valve of the PWM duty cycle low percent is the equivalent of the low split The valve of the PWM high split is determined by subtracting the PWM duty cycle low percent from the PWM duty cycle When an even split occurs the value of the PWM duty cycle is evenly divided between the freezing cylinders PWM Valve Split During Freeze Down When the AUTO mode is selected the refrigeration system is activated and the PWM valve split is determined by the temperature of the freezing cylinders and the difference between the freezing cylinder temperatures at the time the AUTO mode was selected See Figure 3 on page 14 Example 1 If only the left freezing cylinder temperature is below 25 F 4 C and the difference between the right and left freezing cylinder temperatures is more than 10 the left PWM valve operates at the low split and the right PWM valve operates at the high split If the difference between the left and ri
43. ors and trained service technicians alike This manual is intended exclusively for Taylor authorized service personnel A DO NOT attempt any repairs unless the main power supply to the machine has been disconnected Failure to follow this instruction may result electrocution A Stationary appliances which are not equipped with a power cord and a plug or other device to disconnect the appliance from the power source must have an all pole disconnecting device with a contact gap of at least 3 mm installed in the external installation Failure to follow this instruction may result in electrocution 3 DO NOT install the unit in an area where water jet could be used to clean or rinse the freezer Failure to follow this instruction may result in serious electrical shock A These machines must be placed on a level surface Failure to comply may result in personal injury or equipment damage This freezer is designed to operate indoors under normal ambient temperatures of 70 75 F 21 24 C The freezer has successfully performed in high ambient temperatures of 104 F 40 C at reduced capacities NOISE LEVEL Airborne noise emission does not exceed 78 dB A when measured at a distance of 1 0 meter from the surface of the machine and at a height of 1 6 meters from the floor 070321 Refrigerant Taylor uses R404A refrigerant This refrigerant is generally considered non toxic and non flammable however any
44. r Replace the worn component s coupling are rounded Model 337 21 Troubleshooting PROBLEM PROBABLE CAUSE REMEDY 12 An excessive amount of mix There is a worn or missing drive shaft Replace the boot seal leaked through the rear of the unit boot seal into the drip pan Inadequate lubrication of the drive Lubricate the boot seal according to shaft boot seal the Operator s Manual The rear shell bearing is worn Replace the bearing The seal is installed inside out Assemble the seal according to the Operator s Manual The wrong type of lubricant is being Use the lubricants recommended in used the Operator s Manual 13 The beater assembly works There is a refrigerant shortage Locate and repair the leak forward 14 The freezer door works loose The stud nuts handscrews are not Tighten or replace the stud nuts tightly nied or are damaged The beater assembly works forward See previous problem 15 Low overrun The scraper blades are Replace the blades worn damaged The mix feed tube is not installed Install according to Operator s Manual Beater rotates continually Check for electrical short or faulty contactor Long ON cycles Check for sufficient mix in the hopper a clean condenser and the correct refrigerant charge 16 The draw valve is leaking Improper lubrication Lubricate according to the Operator s manual Worn or nicked o rings on valve Replace o rings Incorrect lubricant use
45. ressor Disconnect Switch If the unit has no plug a separate disconnect switch must be installed or another alternate means to disconnect power must be implemented Failure to follow this instruction may result in electrocution Water Cooled Units An adequate cold water supply with a hand shut off should be provided IMPORTANT Do not install a shut off valve on the drain line Refrigeration Main Compressor Air Cooled Units 46 oz of R404a HP62 Water Cooled Units 38 oz of R404a HP62 Separate Hopper Refrigeration The EPR valve setting for the SHR refrigeration system should be 20 22 PSI Air Cooled Units 6 oz of 134a refrigerant Note Refrigerant charges are subject to change Always refer to the freezer data plate Beater Rotation Beater rotation must be clockwise as viewed looking into the freezing cylinder 11037 Figure 2 To correct rotation on a three phase unit interchange any two incoming power supply lines at freezer main terminal block only To correct rotation on a single phase unit exchange leads inside the beater motor Follow the diagram printed on the motor Electrical connections are made directly to the terminal block provided on the bottom of the frame A REMEMBER TO DISCONNECT ALL POWER TO THE FREEZER Failure to follow this instruction may result in electrocution Model 337 Introduction Electrical Connections A CAUTION THIS EQUIPMENT MUST
46. rst cycle off minus 1 If the cylinder temperature at the time the freezer is placed in the AUTO mode is between 25 F 4 C and 10 F 12 C the balance temperature is equal to the previous balance temperature To control the split during some draw recovery cases the relationship between the cylinder temperature and its balance temperature is used in conjunction with the viscosity information During a draw recovery if the PWM valves are operating with an even split the viscosity condition is met but one of the cylinders is above its balance temperature the PWM split will change The cylinder that is above its balance temperature will be favored with the high split Model 337 15 Controls and Systems PWM Split Flow Chart RIGHT DRAW VALVE OPEN LEFT RIGHT LEFT DRAW VALVE OPEN LEFT EH _ RIGHT CENTER DRAW VALVE OPEN LEFT RIGHT Refrigerant Flowing Refrigerant Not Flowing Figure 4 Corresponding Suction Pressure at 70 F 21 C Ambient Temperature 24 15 22 13 20 11 16 6 14 4 Controls and Systems 16 Model 337 Universal amp Interface Boards External Connections J2 P4 2 1 5 P4 P3 P1 P2 J6 P3 P7 P1 P5 J10 P6 P4 P5 J7 Left Mix Out Probe Right Mix Out Pro
47. used in its equipment For example if the refrigerant is lost during the course of ordinary service to this machine Taylor has no obligation to either supply or provide its replacement either at billable or unbillable terms Taylor will continue to monitor the industry and test new alternates as they are being developed Should a new alternate prove through our testing that it would be accepted as a drop in replacement then the above disclaimer would become null and void To find out the current status of an alternate refrigerant as it relates to your compressor call the local Taylor Distributor or the responsibility to make this fact known to any Taylor Factory Be prepared to provide the technicians they employ model serial number of the unit in question 070321 Parts 26 Model 337 Notes Model 337 27 5 337 Exploded View VN SS NS NN NY NY O AI A Ay WEES ES ENS 2 2 B 2 D S N 1 f 107 ANY d na Q VA U AS Y y DAN X o AY Figure 6 Model 337 28 Parts 337 Exploded View Parts Identification 6 morons 5 NUTFLANOESTOVERGRADE 011860 s WASHERSHSSAEFLAT 017660 26 BOLT CARRIAGE 1 4 20 X 012347 3 45 PLATE A DEC 44276 PANEL A FRONT X44247 GUARD WIRING 8 X 8 GALV
48. y jp in Model 337 Soft Serve Freezer Service Manual GED mor 8 21 00 044869 S AEN ma n Table of Contents Section 1 Introduction 1 Sally e eat ide a ue oat RESO cau awe 2 Remasters sido Y OA 2 337 Specifications tt 3 Running Specifications da eee ee c 4 Installation 11 86 19 wa mb win 5 Section 2 Controls and Systems 7 Operating Screen Displays 8 Pulse Width Modulation yo e Re ea 13 Refrigeration System coe puer exu ee V RE EH en RE 15 PWM Split Flow Chart scsi as 16 Universal amp Interface Boards 17 Control OvervieW eu A a ane 18 Section 3 Troubleshooting 19 General Troubleshooting Guide 20 Electrical Troubleshooting 23 Go trol Faults mw 24 Model 337 Table of Contents Table of Contents Page 2 Seclionia Parts iowa ieee t EIE Harte ete nee aed 25 Warranty Explanatlon aoe St oda 26 337 Exploded VIEW CE ERES tana 28 SSCP ACIS 4 a eh oe A 30 Beater Door Assembly
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