General Operation and Service Manual of Cake
Contents
1. 9 4 2 Damages and Shortages If the KOLDTECH product is damaged during transport please contact your dealer a s a p OASM 006 D 19 12 06 8 1 07 14 OF 17 9 4 3 Service The Technology of Excellence To arrange service on your KOLDTECH product please contact the dealers service department In Australia In Asia South East Asia and others Tom Stoddart Pty Ltd 215 Jackson Road Sunnybank Hills Q 4109 Australia Fax 61 7 3344 6166 To contact the nearest dealers or by e mail to the service department Att adms welbilt thailand com Ph 617 3345 5011 Ph 6602 3160770 factory welbilt thailand com Fax 66 037 294 181 10 FUNDAMENTAL REFRIGERATION DIAGRAM N 9 EVAPORATOR S EVAPORATOR COIL NOLLONS 2 CONDENSER COIL COMPRESSOR eos DISCHARGE LINE 7 CDEXPANSION VALVE 6siGHT GLASS LIQIUD LINE S FILTER DRIER 3 CONDENSIR FAN 4 RECEIVER TANK Topic Descriptions Locations 11 ELECTRICAL SCHEMATIC DIAGRAM Last attaching respectively 12 UTILITY INLETS OUTLETS LAYOUT OF THIS UNIT IS N A 13 COMBINATIVE TIMING DIAGRAM 14 COPY OF TEST CERTIFICATE 15 BLANK CLAIM FORM 16 BLANK SERVICE RECORD FORM OASM 006 D 19 12 06 8 1 07 15 OF 17 N CAUTION 1 NOT TO Overloading the outlet by multisockets one outlet one appliance 3 NOT TO Spraying the unit with water 5 TO Holding the cord wh2. 7 OF 17 The Technology of Excellence 6 ASSEMBLY DRAWING Pd LIQUID LINE CONDENSING UNIT OASM 006 D 19 12 06 8 1 07 8 OF 17 The Technology of Excellence 7 RECOMMENDED SPARE PARTS OF KOLDTECH PRODUCT DESCRIPTION V refers standard equipped spec VOLTAGE v 220 Volt others Volt FREQUENCY 50Cycle 60 Cycle ITEM PART NO 1 COMPRESSOR 1112464 2 CONDENSER 25423511 3 CONDENSER FAN MOTOR 1012916 4 CONDENSER FAN BLADE FAN GRILL 100105 179260 5 RECEIVER TANK 1136021 6 LIQUID FILTER DRIER 13403 7 SIGHT GLASS 14203 8 SOLENOID VALVE 9 EVAPORATOR COIL 2643730 10 EXPANSION VALVE ORIFIC 13112 1303 1 EVAPORATOR FAN MOTOR 1012910 12 EVAPORATOR FAN BLADE 110085 13 DIGITAL CONTROL 0874020 14 SQUARE LIGHT SWITCH 1099105 15 FLUORESCENT LAMP 30 W 09830 16 LAMP SOCKET 098974 17 LAMP DIFFUSER 0743889 18 LAMP DIFFUSER CAP 0741251 19 BALLAST 097140 20 STARTER 09709 21 THERMOSTAT 139120 22 DRAIN 12021500 23 CONTACTOR 0962204 OASM 006 D 19 12 06 8 1 07 9 OF 17 The Technology of Excellence 8 TROUBLE SHOOTING TABLE AND TROUBLE SHOOTING TREES Symptoms Possible Cause Actions Compressoris 1 Main switch is disconnected Close switch properly
3. not run 2 Fuses are blown Check electrical circuit and motor winding for shorted or grounded Investigate for possible overloading Replace fuse after fault is re corrected 3 Thermal overload is tripped Overload is automatically reset Check unit closely when unit resumes normal 4 Magnetic contactor coil is out of order Repair or replace 5 System shut down by safety devices Determine type and cause of shutdown and correct it before resetting safety switch 6 Liquid line or solenoid valve is not Check TXV Repair or replace coil open 7 Compressor Motor drive Check motor if opens windings short turn or burnt and disconnected 8 Loosened wiring Check all wires termination Tighten all the loosened screws 9 of3 Phase system Phase may be Test all conductors continuity lost Compressor 15 1 Liquid refrigerant returns into Check setting of expansion valves unusually crankcase sounded or 2 Refrigerant Pipe is not well erected Provide proper fastener vibrated 3 Compressor mechanism loosened Repair 4 Internal balance springs or Neoprene Replace choke are broken High 1 Condensation fail Rectify cause of fails discharge 2 System is overcharged refrigerant Remove the excessive pressure 3 Fan is off Check electrical circuit 4 Condenser fins are dusty Clean Low 1 Compressor valve is damage Check compression ratio or open it discharge 2 Insufficient refrigerant in system Check leaking and recharge
4. refrigerant OASM 006 D 19 12 06 8 1 07 10 OF 17 The Technology of Excellence pressure 3 Stop valve is yet closed 3 Open stop valve properly Highsuction 1 Excessive chilled product Chilled volume to specification pressure 2 Expansion valve overfeeding Check remote bulb Regulate superheat Low suction 1 Lack of refrigerant Check leaking and fix pressure 2 Evaporator is full ofice Defrost system does not work 3 Clogged liquid line Replace Stainer Drier 4 Expansion valve malfunctioning Check and reset for proper superheat 5 Improper TXV Check for proper sizing Compressor 1 Leaking of refrigerant Check leaking and recharge refrigerant loses oil 2 Loosened cylinder ring Replace compressor 3 Refrigerant flood back Maintain proper superheat at compressor 4 Pipe sizing or trapping is not correct Re correct piping Compressor 1 Operating beyond design conditions Tuning facilities to the allowable limits 2 Condenser fins are overly dirty Clean Fin coil 3 Overcharged refrigerant Release the excessive is open Evaporator Trouble shooting Symptoms Possible Causes Actions Fan s is not turned 1 Main switch is open 2 Fuses are blown 3 Motor is out of order 4 Defective Timer or defrost thermostat 5 Unitis in defrosts cycle 6 Coilis not cooled down enough to reset thermostat Close switch Replace fuses Check cause
5. source and leave the doors slightly opened Recommended Maintenance Schedule Frequency Maintenance List Daily Weekly Monthly Clean interior and exterior surfaces X Check operating temperature X Check control panel alarm X Check compressor for vibration Check compressor temperature Check condenser fan Clean condenser coil X OASM 006 D 19 12 06 8 1 07 50F 17 The Technology of Excellence 5 TEMPERATURE SETTING 5 1 Your KOLDTECH product is equipped with an electronic thermostat with off cycle designed for refrigeration applications at normal temperature It provides a relay output to drive the compressor and a probe input An internal timer manages the off cycle defrost Tips Recommended preset temperatures for specialized use Flowers 4 C to 8 Confectionery Candy 14 C to 18 C Seafood 1 C to 1 C Meat 2 C to 1 C Cakes 7 C to 10 C Consult factory when needed self adjustment may void the given warranty 5 2 Front Panel Commands SET refers to display target set point in programming mode it selects a parameter or confirms an operation DEF Presses for more 2 seconds to start a manual defrost UP Press to see the maximum stored temperature DOWN Press to see the minimum stored temperature Key Combinations Lock and unlock the keyboard SET To enter in programming mode SET To return to the room temperature displ
6. KOLDTEGH REFRIGERATOR AND FREEZER General Operation and Service Manual of Cake Display Covering Models as shown URCD 12 OASM 006 D 06 126 The Technology of Excellence CONTENTS Topics Description Page Topics Description Page 1 INTRODUCTION 3 5 TEMPERATURE SETTING 6 2 INSTALLATION amp STARTS UP 3 5 1 Temperature Settings 7 5 2 Controller and Parameter 18 2 1 Uncrating 3 6 ASSEMBLY DRAWING 8 2 2 Handling Issue 3 7 RECOMMENDED PARTS 9 2 3 Installation 3 8 TROUBLE SHOOTING 10 13 TABLES AND TREES 2 4 Draining 4 9 WARRANTY amp SERVICE 14 2 5 Ventilation 4 10 REFRIGERATION 15 DIAGRAM 2 6 Electrical Preparation 4 11 TIMING DIAGRAM 17 2 7 Starting 4 12 VO UTILITY o LOCATION GF APPLICABLE 2 8 Product Loading 4 13 ELECTRICAL DIAGRAM 2 9 Machine Performance 4 14 TEST CERTIFICATE 2 10 Defrosting 4 15 CLAIM FORM DT 3 PRODUCT CLEANING Tips 41 16 SERVICE RECORD FORM LAST 4 MAINTENANCE SCHDULE 5 Technical depth as italicized Noted page may be limited to dealer use only OASM 006 D 19 12 06 8 1 07 2 OF 17 KOLDTECH The Technology of Excellence 1 INTRODUCTION Thank you for choosing our KOLDTECH product With over 30 years of experience in refrigeration manufacturing we are confident that our product will provide you with years of trouble free operation Our products are fully engineered to be amongst the best in the industry We
7. also continually improve our product designs to ensure they continue to take advantage of the latest in refrigeration design Every unit is fully tested in our calibrated testing laboratory prior to leaving our factory As with other precision equipment proper care and operation will ensure years of trouble free service It is essential that you spend time reading this manual before operating the machine to familiarize yourself with our product and safety procedures Keep the manual where end user could see and locate We thank you again for choosing KOLDTECH If you have any further questions please feel free to call the dealer from whom you purchased the unit Our address and telephone number can be found under the Service and Repair information section 2 INSTALLATION AND START UP The following procedure should be followed for trouble free installation 2 1 Uncrating While unpacking take note of any damage to the unit If damage is found do not discard the packing materials and notify your dealer or the freight company a s a p Do not proceed to install the unit 2 2 Handling Issue 2 2 1Precaution has been taken to ship the unit in an upright position If the unit is tilted during transit lubricating oil may shift from the reservoir and operating the unit may cause excessive wear or damage to the compressor s moving parts It is recommended that the unit be left standing for 48 hours before operation 2 2 2Inspect and clea
8. ay E Use of LEDS Each LED function is described in the following table ILED MODE FUNCTION JON Compressor enabled Flashing Programming Phase flashing with 86 Anti short cycle delay enabled Detrostenabled id Flashing Programming Phase flashing with 3 Drip time in progress OASM 006 D 19 12 06 8 1 07 6 OF 17 5 3 Changing the Set Point The Technology of Excellence 1 Press the SET key for more than 2 seconds to change the Set point value 2 The value of the set point will be displayed and the LED starts blinking 3 To change the Set value pushing the or w arrows within 10 sec 4 To memorize the new set point value pressing the SET keys again or waits 15 sec 5 4 Alarm Signals Display EE Data or memory failure py Room probe failure Output according to par Con and COF HA Maximum temp alarm Output unchanged LA Minimum temp alarm Output unchanged EA External alarm Output unchanged CA Note Serious external alarm Output OFF The setting of operating temperature and defrost for freezer is already factory set End user self adjustment may void the given warranty unless consult the authorized The parameter setting table herewith given is for the purpose of the reference of the DEALER S service or authorized competent service technician only OASM 006 D 19 12 06 8 1 07
9. caused during transportation 9 2 4 Breakage of glass bulbs lamps or plastic components or the replacement of gaskets or fluorescent tubes 9 2 5 Penalty or additional labour costs for installation removal or repair of the product outside normal working hours All warranty parts requested will be charged to the customer s account unless a warranty claim is approved Standard credit policies will be applied 9 3 Warranty Procedures If your KOLDTECH product is not working while still under warranty and has not been subject to improper use or treatment follow the procedure listed below to obtain repairs Locate the rating plate sticker on your KOLDTECH product to enable you to complete the details on the Warranty Request Form Complete the form with all requested details and faxes a copy to the number shown along with proof of purchase of the product Manufacturer and the authorized reserve the right to reject warranty calls where circumstances fail to meet their warranty conditions 9 4 Parts Ordering and Service Procedures 9 4 1 Replacement Parts Replacement parts are available as shown In Australia In Asia South East Asia and others Tom Stoddart Pty Ltd To contact the nearest dealers or 215 Jackson Road by e mail to the service department Sunnybank Hills Q 4109 Att adms welbilt thailand com Australia factory welbilt thailand com Ph 61733455011 Ph 6602 3160770 Fax 61 7 3344 6166 Fax 66 037 294 181
10. en unplugging Hold plug head is suggested 7 TO Having back of the unit press against cord 9 TO Having stuff place on top of the unit 11 NOT TO Using wet hands whilst pluging and unplugging 13 NOT TO Storing flammable or explosive material liquid or gas inside the unit 15 NOT TO Using flammable spray near the unit 17 NOT TO Using the damaged electrical cord 19 NOT TO Placing glass bottle items in freezer 21 TO Attempting to remove the unit with unproper method 23 NOT TO Placing movers hands under the unit when handling to use dolly as necessary when handling 25 NOT TO Replugging so soon but wait for 3 6 minutes allowing the system pressure balance then restart achievement C Program Fires My doc ASuradeje CR Safety Notices Safety Notices OASM 006 D 19 12 06 8 1 07 CAUTION 2 NOT TO Repairing or remove without know ho 4 NOT TO Cleaning plug pins by soaked cloth 6 TO Tempering the electric 8 NOT TO Having electrical cord trapped under the unit or other machine 10 TO Neglecting securing earthing 12 TO Playing Hanging on door leave 14 NOT TO Storing extremely temperature sensitive stuffs eg medical relevant researching materials 16 NOT TO start up the unit when having gas leakging near by open windows door to firstly dilute gas density is a must 18 NOT TO Instal
11. gulation 2 15 pressure switch no Fan normal CPr F Compressor status with open door D Compr OFF Kind of Kindof probe Pene ntc __ Evaporator probe digplay 424 24 2 Softwareretease 4 7 RUN CAPACITUR START CAPACITOR L N PE SUPPLY 220Voc 1PH 50 2 DRAIN HEATER COMPRESSOR CONDENSOR FAN PLUG WELBILT UNLESS OTHERWISE NOTED PROJECT KRIANGSAK DATE 3 03 06 ITEM lov 1 O SS WHOLE NO 0 5 ANGLES 30 5 CHECKED KRIANGSAK JOB NO SCALE DWG NO URCD 12 Manufacturing Thailand Ltd DESIGN DIMENSIONS ARE IN PRODUCT APPROVED P O NO PAGE NO 1 OF 2 REVISION Ee gt oc SHOP DWG FORM 08 09 16F LAC96LRAD 20 82 250 SW1 POWER UE canes SW2 LIGHTING THERMOSTAT 0 120 FLUDRESCENT 30WX3 gt WELBILT UNLESS OTHERWISE NOTED PROJECT KRIANGSAK DATE 3 03 06 ITEM lov 1 O ee WHOLE NO 0 5 ANGLES 30 5 CHECKED KRIANGSAK JOB NO SCALE DWG NO URCD 12 Manufacturing Thailand Ltd DESIGN DIMENSIONS ARE IN mm PRODUCT APPROVED P O NO PAGE NO 2 OF2 REVISION Re MO o SHOP DWG FORM 08 09
12. he unit into the wall outlet Turn the unit on using the on off switch 2 7 Starting After turning on the unit for the first time if there is any unusual odour heat smoke or vibration immediately turn off and unplug the unit and call for a service technician The unit should be closely monitored during the first hour of operation 2 8 Product Loading The thermostat is set at the factory for optimum operating temperature Time taken to attain the operating temperature depends on the temperature of the food being loaded the frequency of the door opening ambient temperature etc The unit should reach operating temperature during the first 4 6 hours for chiller and 8 12 hours for freezer of operation 2 9 Machine Performance To prevent compressor damage the unit is equipped with a Time Delay Circuit which shall activate the compressor within 2 minutes after turning on the power or after restarting 210 Defrosting Defrosting the circuit is set from the factory for optimum operation Do not attempt to alter the setting PLS NOTE do not disassemble the unit Any service performed by parties other than our authorized may void the warranty 3 PRODUCT CLEANING 3 1 CLEANING Stainless Steel surface P V C and Display Glass Users can wash by lukewarm soapy water or recommended cleaner and later thoroughly rinses or wiping all surfaces with water or moistened clothes respectively Finally polish with dry soft cloth 3 2 Note Do not use
13. ling the unit exposedly to water or high moisture 20 NOT TO Subjectively playing Setting temperature R 3C 13C F 20C 0C 22 NOT TO Touching frozen foods or frozen meta container with bare hands it can cause cold burn 24 NOT TO Unplugging the unit whenever intermediate service needed 26 NOT TO Forgetting all of the mentioned advice OOCOOWOO SOW REVA 27 10 03 SE 16 OF 17 The Technology of Excellence The Technology of Excellence ejnului O Jaye uny JosseJdujo JO MNV38 BuneJedo ES _ uoneurquJoo yun 17 17 OASM 006 D 19 12 06 8 1 07 Controller application setting parameters Dixell XR20C for Open Show cake display refrigerator Wane a a Evaporator probe calibration o TU c RU 22 GE gt eT ee M MANU i RC UM ALARMS pese DIGITAL INPUT gos EAL extern alarm bAL lock regulat PAL press sw dor door sw Digital input configuration EAL EAL dEF defrost LHt disabled Htr Cooling heating 0 door switch 1 lock Kind of action when I1f Bal re
14. of short circuits or overload conditions Replace motor Replace defective component Wait until resuming Adjust fan delay setting or wait until resuming Room temperature is too 1 high Room temp is overly set 2 Superheat is too high 3 Refrigerant is shortage 4 Evap Coil is highly ice accumulation Properly tune thermostat Adjust thermal expansion valve Check fix leaking and Recharge ref Do Manually defrost and check defrost control setting OASM 006 D 19 12 06 8 1 07 11 OF 17 The Technology of Excellence Ice is accumulating on l ceiling around 2 evaporator and or on fan guards venturi or blades 3 Defrost duration is too long Fan delay does not activate fans after defrost period Defrost thermostat or timer is out of order Frequently Defrosting action Adjust defrost termination value Thermostat is not defrost or adjusted properly Replace defective component Reduce number of defrost cycle set Evap Coil is not cleared 1 of frost during defrost During defrosting Temp of Evap coil is lower than Check heater if operation is normal cycle freezing temp 2 Cycle of defrost is not Adjust Timer for more defrost cycles enough Adjust defrost thermostat or Timer 3 Defrost cycle too short for longer cycle 4 Defective Timer or defrost Replace defect component thermostat Ice accumulating in 1 Condensate pan heater i
15. r away any packing material that may be used to secure the unit during transit 2 3 Installation 2 3 1 Install the unit in a dry well ventilated place away from heat sources or any vibration Ideally for optimum performance we recommend installation in air conditioned premises In the event of high relative humidity condensation may form on the cabinet This will not impact on the ability of the cabinet to maintain internal temperature Should ambient temperature exceed 36 C OASM 006 D 19 12 06 8 1 07 30F 17 KOLDTECH The Technology of Excellence we cannot guarantee the maintenance of internal temperature to required standards 2 3 2 The unit should be set on a level and firm surface 2 4 Draining Special models may require drain pipe for condensate water End user should well explore from specification sheet before plugging in and self prepare of drain pipe as appropriate 2 5 Ventilation ventilating grills or louvers must not be obstructed for proper operation 2 6 Electrical Work Preparation 2 6 1 For safety reasons the unit must be properly earthed Check and make sure that the outlet is properly grounded If a grounded plug is not available a separate earth ground must be installed to prevent any electrical hazard properly rated circuit breaker should be installed to the supply outlet Check for proper supply voltage before plugging in the unit Please refer to voltage requirements on the nameplate of the unit 2 6 2 Plug t
16. s Replace heater drain pan out of order 2 Drainpipe is clogged of ice Clear drain line 3 Drain heater is out of order Replace heater remove clogging 4 Timer thermostat is out of Replace defective component order OASM 006 D 19 12 06 8 1 07 12 OF 17 Machine Does Not Run is the main Turn on the X OMIT off switch Yes check the correct power supply to the machine Yes check continuity of supply cords amp protection fuse Yes check cap start and cap run and magnetic contactors Yes check control board wiring continuity and termination Yes ction as per root cause finding OASM 006 D 19 12 06 8 1 07 The Technology of Excellence Troubleshooting Trees Overly High or Overly Low Pressure Does machine meet sufficient No refrigerant Yes check suction pipes that no sqeezed or blazing clogged check TXV for moisture based Yes restriction check refrigerant leakage and amperage consumption No Hi site pss Lo e pese _andCurrent consumption shall be related to each others record data ing commissioning shall b vailable System Operates but no Chilling or Freezing check type of Yes check leakage of refrigerant no check temp controller setting amp functioning Yes Hi si m diem d urrent con
17. solvents or other aggressive liquids for cleaning e g with mixture of chlorine or detergent etc Do not use wire brush steel wool or grainy wiping pad such as Scotbrite pad grain OASM 006 D 19 12 06 8 1 07 4 OF 17 The Technology of Excellence 4 MAINTENANCE 4 1 Observe safety practice by disconnecting all electrical supply before performing any kind of maintenance 4 2 Do not use sharp instruments or cleaning agents on the unit Clean interior and exterior surfaces using a damp cloth and warm water Food particles and spillage should be removed as soon as possible to avoid build up and odour 4 3 To ensure efficiency and reliability it is important that the condenser coil be kept clear of accumulated dirt and duct It is recommended to use a non metallic brush vacuum cleaner or air blower to dislodge dust from the condenser fins The frequency of cleaning depends on the amount of dust in the surrounding area of the installation The condenser should be inspected and cleaned at least every month 4 4 Do not expose any electrical components to moisture or water If the unit gets wet turn it off and unplug it from the wall outlet immediately Do not turn it on again until the unit is completely dry or after inspection by a qualified service technician 4 5 Should the unit be left unused for an extended period all food items should be removed The interior surface and shelves should be cleaned thoroughly Unplug the unit from the power
18. sumption shall be related to each others record data during ssioning shall be availal MEL e recharge the refrigerant repair the squeezed point or bottle necked point replace drier evacuate and recharge system Isolator Trips Oftenly check overload is set _ check overly charging refrigerant check compressor wdg if shorted turn no check earth leaking no action as per root cause finding Abnormal Sound during Operation ae securing and all movable N mechanism check bearings bush and fan blades Yes ction as per root cause finding 13 OF 17 KOLDTECH The Technology of Excellence 9 WARRANTY 9 1 KOLDTECH warrants equipment sold against defects in material and workmanship for a period of twelve 12 months from the date of installation or fifteen 15 months from date of shipment whichever comes first Access to warranty is conditional on the equipment being correctly installed cared for and operated under normal conditions 9 2 The warranty does not cover 9 2 1 Any consequential loss damages or expenses directly or indirectly arising from use or attempted use or from any other cause 9 2 2 Any part of the product which has been subject to misuse neglect alteration incorrect installation accident use of inappropriate chemicals flooding fire or acts of God 9 2 3 Damage
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