Service Manual - Foster Refrigerator
Contents
1. REE i PROCUREMENT MYDIRIOCANBCN WEHE 6 C LOW MFRICERANT COMPUANT PURCHASNC CARBON FHC500XM amp S Cabinet with LTR 5CSRE A Controller ENVIRONMENTAL MANAGEMENT QUALITY MANAGEMENT 001 ISO 14001 ISO 9001 FOSTER Service Manual Issued October 2010 Contents Wiring Diagram 1 1 1 8 Troubleshooting amp Notes 9 Service Manual Information The products and all information in this manual are subject to change without prior notice We assume by the information given that the person s working on these refrigeration units are fully trained and skilled in all aspects of their workings Also that they will use the appropriate safety equipment and take or meet precautions where required The service manual does not cover information on every variation of this unit neither does it cover the installation or every possible operating or maintenance instruction for the units Health amp Safety Warnings and Information Make sure the power supply is turned off before making any electrical repairs To minimise shock and fire hazards please do not plug or unplug the unit with wet hands A During maintenance and cleaning please unplug the unit where required io Care must be taken when handling or working on the unit as sharp edges may cause V personal injury we recommend the wearing of suitable PPE Ensure the correct moving and lifting procedures are used when r2. Ensure the person receiving the waste at its ultimate destination is in receipt of a waste management licence or valid exemption 6 Handle and store refrigerants in such a way as to prevent their emission to atmosphere and ensure they are disposed of safely and in accordance with environmental law 7 Make arrangements to ensure all staff wno handle refrigerants do so at a level of competence consistent with the City Guilds 2078 Handling Refrigerants qualification or equivalent qualification 8 Ensure all liquid substances are securely stored to prevent leaks and spill and are not disposed of to storm drains foul drain or surface water to soil Disposal Requirements If not disposed of properly all refrigerators have components that can be harmful to the environment All old refrigerators must be disposed of by appropriately registered and licensed waste contractors and in accordance with national laws and regulations Cabinet Description Both cabinets are manufactured as a one piece foamed shell Each conforms to current legislation and exceeds the Montreal protocol The temperature is controlled by a microprocessor control with digital temperature display Heated air is circulated from the heater element via a fan into the storage area There are two models available the FHC500XM a mobile unit which is fitted with bumper bars a manoeuvring handle and 100mm castors The castors are fixed at the front and lockable swivel to t
3. for LTR 5T 40 125 C for LTR 5C 0 0 99 9 r H for LTR 5A F measuring range 60 300 F for LTR 5T 40 250 F for LTR 5C CAUTION Upon changing the SCL value it is then absolutely necessary to re configure the parameters relevant to the absolute and relative temperature SPL SPH 1SP 1HY etc SPL Control mode With 1Y HY you select control with Hysteresis parameters 1HY and 1CT are used With 1Y PID you select a Proportional Integral Derivative control mode parameters 1PB 1IT 1DT 1AR 1CT will be used Thermostat differential control with Hysteresis oet 1HY on a value greater than zero to make the output work in refrigerating mode vice versa set on a value lower than zero to make the output work in heating mode With 1HY 0 the output is always off 19 9 19 9 C ON ce ON fe x OFF OFF 1SP 1SP 1HY TP 1Y HY PID 1SP 1HY 1SP TI Fig 1a ON OFF refrigerating control 1Y2 HY 1HY 0 Fig 1b ON OFF heating control 1Y2 HY 1HY 0 In the PID control 1Y PID the cycle time is the period of time in which the output completes a cycle Time ON Time OFF The faster the system to be controlled reacts to temperature changes the similar the cycle time should be in order to obtain greater temperature stability and less sensitivity to load variations ON OFF Output state in case of probe failure 0 Cycle Time In the ON OFF control 1Y HY after the output has switched on or off it will remain
4. in the new state for a minimum time of 1CT seconds regardless of the temperature value 1CT NON SBY With BAU SBY the stand by button is enabled Display slowdown 12 5 12 5 C Probe T1 offset ADR 15 255 LTR 5 address for PC communication Wiring Diagram for FHC500XM amp S with LTR 5CSRE A Controller A B D E F G H J K L M N P FOSTER Q0 206186 LITRI CSRE A E 31213 4 5 6 7 8 9 oj Jn jn e a MAINS ON OFF SWITCH Ras Ole sp TR 1 GOMA TQ BE FULLY CARSHETI L CABLE 10mm UNLESS OTHERWISE STATED MET SAFETY STAT SET NT JFE mena ci ie dent CUSTOME s es REWI a 1S L gv DATE WING DIAGRAM 01 267071 00 01 LEGS TER FOSTER REFRIGERATOR U K LTD fe sone SHEET 1 oe d OLDMEDOF ROAD KING S LYNN NORPOLK PEJ 4JU ice UD Nm _l16 11 0 HEATED CABINETS RE COPY Ll amp e e e m wm d j de N Troubleshooting Possible Cause Possible Cause f a Lus ssy n e oisi n display on the controller and Go LL meon illuminated ETT AN thermostat tripped Reset and G meis MN cause S ERSECSOREGIS TY GUB controller relay output uso hn ae fan ot din heating and the fan is not Nooutputirom controller E Ean may borat J c Check the heater No output from the controller Check controller relay output Unit not heating and fan is running Faulty heater aoo pee ANa TEpACEAS Faulty rela Check relay and replace as necessar Main
5. N50082 1 Front protection IP55 amp VIA LTRSCSRE A ly Hi for 5 seconds e With button LY lor select the parameter to be modified e Press button F lio display the value e By keeping button Ea pressed use button LY lor a to set the desired value e When buiton Ea is released the newly programmed value is stored and the following parameter is displayed s e To exit from the setup press button or wait for 30 seconds Default Parameter Values for Controller and Cabinets LTR 5CSRE A Parameter List aca Description Min Max Dim Default 1 C 2 C F Minimum set point 1 i i i Control Type HY PID f Proportionalband 199 199 5 6 Integral action time 0 999 sec 350 amp 1 4 Derivative action time 0 999 se 4 217 15 Reset of integral action 0 100 200 20 Cycletime 0 255 219 OFF Status with faulty sensor ON OFF 220 NON Operation of auxiliary button NON SBY 234 3 Display slowdown O0 100 236 0 Sensor correction 125 125 235 1 JjUniaddes 1 255 C C C ag K C C 7 Default Parameter Settings for LTR 5CSRE A Controller Readout Scale 1 C measuring range 50 19 9 99 9 150 C for LTR 5T 40 19 9 99 9 125 C for LTR 5C 0 0 99 9 r H for LTR 5A 2 C measuring range 50 150 C
6. compliance with the law and are committed to best practice in environmental management Product Support and Installation contractors are required to 1 Ensure that wherever possible waste is removed from the client s site where arrangements are in place all waste should be returned to Foster Refrigerator s premises In certain circumstances waste may be disposed of on the client s site if permission is given if the client has arrangements in place for the type of waste 2 If arranging for the disposal of your waste handle store and dispose of it in such a way as to prevent its escape into the environment harm to human health and to ensure the compliance with the environmental law Guidance is available from the Environment Agency on how to comply with the waste management duty of care 3 The following waste must be stored of separately from other wastes as they are hazardous to the environment refrigerants polyurethane foam and oils 4 When arranging for disposal of waste ensure a waste transfer note or consignment note is completed as appropriate Ensure that all waste is correctly described on the waste note and include the appropriate six digit code from the European Waste Catalogue Your waste contractor or Foster can provide further information if necessary 5 Ensure that all waste is removed by a registered waste carrier a carrier in possession of a waste management licence or a carrier holding an appropriate exemption
7. elocating a unit Do NOT use abrasive cleaning products only those that are recommended Never scour any parts of the refrigerator Scouring pads or chemicals may cause damage by scratching or dulling polished surface finishes Failure to keep the condenser clean may cause premature failure of the motor compressor which will NOT be covered under warranty policy Do NOT touch the cold surfaces in the freezer compartment Particularly when hands are damp or wet skin may adhere to these extremely cold surfaces and cause frostbite io Please ensure the appropriate use of safety aids or Personnel Protective Equipment V PPE are used for you own safety Environmental Management Policy for Service Manuals and Duets Product Support and Installation Contractors Foster Refrigerator recognises that its activities products and services can have an adverse impact upon the environment The organisation is committed to implementing systems and controls to manage reduce and eliminate its adverse environmental impacts wherever possible and has formulated an Environmental Policy outlining our core aims A copy of the Environmental Policy is available to all contractors and suppliers upon request The organisation is committed to working with suppliers and contractors where their activities have the potential to impact upon the environment To achieve the aims stated in the Environmental Policy we require that all suppliers and contractors operate in
8. g has been reactivated and the function has failed This function should not be activated and if re activated will need to be turned off Please make sure parameter 1Y always equals HY E1 Timeout1 Error the controller could not bring the temperature within the proportional band Increase 1SP in case of heating control visa versa decrease 1SP in case of refrigerating control and re start the process E2 Timeout2 Error The auto tuning has not ended within the maximum time allowed 1000 cycle times Re start the auto tuning process and set a longer cycle time 1CT E3 Temperature Over range Check that the error was not caused by a probe malfunction then decrease 1SP in case of heating control visa versa increase 1SP in case of refrigerating control and then re start the process To eliminate the error indication and return to the normal mode press xo Set point display and modification of desired temperature value e Press button Ea for at least half second to display the set point value e By keeping button pressed use button LY lor a to set the desired value adjustment is within the minimum SPL and the maximum SPH limit e When button is released the new value is stored Stand By Press xO for 3 seconds and the controller to be put on a standby or output control to be resumed with SB YES only In standard settings mode this facility is disabled Hysteresis amp Autotuning Modes The controller is capable of ei
9. he rear The FHC500XS is the same as the mobile version with the only difference being that they are fitted with legs instead of castors Controller Operation The cabinet is turned on and off via the use of the green switch on the front of the cabinet If the cabinet is not to be used for a long period of time we would recommend it be disconnected from the mains supply They are all fitted with an over temperature safety device The normal cause of over temperature alarming is due to fan failure In case of the red warning light illuminating fully check the fan and replace if necessary The safety thermostat is located inside the unit housing and can be reset by pressing the small green button on it Probe Air SN4K150P1 00 556187 E lae Fe Me ESET O LTR 5CSRE A Controller 00 556186 Set point Button a Increase Button Decrease Button xC Exit Stand by Button Thermostat Output Display During normal operation the display shows either the temperature measured or one of the following indications Symbol Controller in Stand by OR Probe T1 Out of Range OR Failure Due to Auto tuning being disabled the following warnings should NOT be seen If seen it is because this function has been re activated Symbol TUN 5 4 Controller in auto tuning In tuning timeout1 error E2 In tuning timeout2 error EB In tuning over range error Warnings If any of the following errors occur Auto tunin
10. on neon not illuminated with Fuse blown in plug Check and replace if necessar unit switched on No electrical supply at the socket Check socket Faulty Mains Lead Check amp replace as necessary Safety thermostat trips regularl Fan running too slow Check and replace as necessary E idis y Incorrectly set thermostat Adjust as necessary Notes FOSTER Foster European Operations France Foster Refrigerator France SA Tel 33 01 34 30 22 22 Fax 33 01 30 37 68 74 Email commercial fosterfrance com Germany Foster Refrigerator Gmbh Tel 49 781 990 7840 Fax 49 781 990 7844 Email info foster gmbh de Foster Refrigerator Oldmedow Road Kings Lynn Norfolk PE30 4JU Tel 0843 216 8833 Fax 0843 216 4707 Website www fosterrefrigerator co uk Email support foster uk com a Division of ITW UK Ltd FHC500XM S LTR5 SM 10 10 10
11. ther Hysteresis or Autotuning modes For the FHC500X the controller uses Hysteresis and therefore Autotuning is disabled and should not be reactivated Recalibration e Have aprecision reference thermometer or a calibrator to hand e Ensure that OS1 0 and SIM 0 e Switch the controller off then on again e During the auto test phase press buttons xo v and keep them both pressed till the controller shows OAD e With buttons Lv lor Iselect OAD or SAD OAD allows a calibration of 0 inserting a constant correction over the whole scale of measurement SAD allows a calibration of the top part of the measurement scale with a proportional correction between the calibration point and O e Press LF lio display the value and then use LY lor a to make the read value coincide with the value measured by the reference instrument e Exit from calibration by pressing button xo Technical Data LTR 5CSRE A Power supply LTR 5 E 230Vac 10 50 60Hz 2W LTR 5 U 115Vacx1096 50 60Hz 2W Relay outputs LTR 5 R LTR 5 SR OUT1 16 4 A Inputs LTR 5C NTC 10KQ 25 C part No LAE SN4 Measuring Range LTR 5C 40 125 C Configuration of Parameters e Setup menu is accessed by pressing buttons Ea X Measuring accuracy LTR 5C lt 0 3 C 40 100 C 1 C out of that range Operating conditions 10 50 C 15 80 R H CE Reference Norms EN60730 1 EN60730 2 9 EN55022 Class B E
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