Foster BC 21, Service Manual

Page 1: ...RBC20 60 Blast Chiller ...

Page 2: ...m the product quickly The air temperature then increases to 3 c for the final 30 of the time to reduce surface damage and ensure quality Hard Chill Max Hard chill max brings down the food temperature to 3 c in no more than 90 minutes and is used for chilling high density or high fat content food such as meat joints stews or packaged products The air temperature during the cycle is allowed to go do...

Page 3: ...external drain The cabinet is delivered with the legs secured to the base of the cabinet Controller Technical Detail The FCC controller is a three piece unit made up of the Front Display and Dial Shaft Encoder Mother Board plus Evaporator Food and Air temperature probes The front display PCB and the CPU Switching PCB unit are interconnected by a ribbon cable The membrane attached to the front prov...

Page 4: ...ress and release the dial for the program to start The program starts with the screen on the left being displayed for 2 minutes After which the intelligent probe determines if the cycle is controlled by time displayed by the screen in the middle or by temperature as displayed by the screen on the right On completion of the program the controller will cause the blast chiller to enter the Hold Mode ...

Page 5: ...ress and release the dial to move to the time set see below right Rotate the dial clockwise to increase the time anticlockwise to decrease Once the time has been selected press and release the dial and CHILL TEMP will be highlighted On completion press and hold the dial for 2 seconds to return to the program selection screen to continue press and release the dial for the program to start On comple...

Page 6: ... service screen below right Press and release the dial to move to the displayed time in hours and minutes rotate the dial to alter the time once the correct time has been achieved press and release the dial to move to DAY If it is necessary to change the day month and year change the settings using the same procedure for setting the time On completion press and hold the dial for 2 seconds to retur...

Page 7: ...dial for two seconds the display returns to the program selection There are Three main programmes RBC 20 60 Blast Chiller Soft Chill for the safe chilling of delicate products such as gateaux and patisserie items and high water content items such as vegetables rice and pasta Hard Chill For general purpose chilling The Hard Chill cycle is ideal for chilling standard products such as meat pies lasag...

Page 8: ... connection Display Data Man Machine RJ54 Type 4 way connection Logger 4 way RS 485 connections Service Information Refer to the operating instructions on page 4 for operating instructions When mains electrical power is first applied to the controller it will carry out a self test function for approximately 3 seconds to ensure that there are good connections between the component parts During this...

Page 9: ... chill process Relay 1 COMPRESSOR Relay 2 FAN1 Relay 3 FAN2 Relay 4 DEFROST Relay 5 ALARM Relay 6 CCAP Capacity Control and Relay 7 UV L will all be switched on and of automatically in a pre determined manner to simulate program operation whether they are connected or not The test is based around an algorithm built into the software Prior to starting the program it is advisable to place a probe in...

Page 10: ... 9 9 PROFESSIONAL 2 U U U U U 9 9 PROFESSIONAL 3 U U U U U 9 9 DEFROST 9 9 9 9 9 9 9 UV SANITISATION OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL INFORMATION OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL Parameter Access From the profile screen once the selection has been made press and release the dial to access the parameter list The screen will display the par...

Page 11: ... Chill Time Minimum Minutes 5 60 5 P49 Chill Time Maximum Minutes 60 480 240 P50 Chill Temp Std C P51 P52 3 P51 Chill Temp Minimum C 20 5 10 P52 Chill Temp Maximum C 5 15 5 P53 Hold Temp Std C P54 P55 3 P54 Hold Temp Minimum C 10 0 0 P55 Hold Temp Maximum C 0 10 10 P56 Change Time 5 95 80 P57 Change Temp 5 95 80 SYSTEM P58 UV Light Enable Minutes 0 120 0 P59 HACCP Enable Function NO YES NO P60 Sho...

Page 12: ...p The temperature which the Food Probe 1 must read before the condensing system is de energised in the chill mode of the Soft Chill program prior to entering the Hold mode of a temperature based cycle Range 5 C to 15 C P07 Hold Temp The temperature which the air probe must read before the condensing system is de energised in the Hold mode of the Soft Chill program Range 5 C to 15 C Hard Chill P08 ...

Page 13: ...nutes to 480 minutes P20 Chill Temp The temperature which the Food Probe 1 must read before the condensing system is de energised in the chill mode of the Shock Freeze program prior to entering the Hold mode of a temperature based cycle Range 15 C to 15 C P21 Hold Temp The temperature which the air probe must read before the condensing system is de energised in the Hold mode of the Shock Freeze pr...

Page 14: ...ercentage of a temperature based chill cycle which is passed before automatically adjusting the air temperature set point to 1 C The range is adjustable in 5 increments 3 Change Temp Range 5 to 95 Pr P3 The standard temperature which the air probe must read before the condensing system is de energised in the chill mode of the Professional 2 Program ofessional 2 4 Air Temp Std Range 20 C to 15 C P3...

Page 15: ...he chill mode of the Professional 3 Program ofessional 3 6 Air Temp Std Range 20 C to 15 C P47 Chill Time Std The standard period Professional 3 program is in chill mode prior to entering Hold mode in a time based chill cycle Range 5 minutes to 480 minutes P48 Chill Time Minimum The minimum period Professional 3 program is in chill mode prior to entering Hold mode in a time based chill cycle that ...

Page 16: ...ck Freeze mode Function YES enables NO disables P61 Chill Hysteresis Allowable temperature increase from chill cycle air temperature Set Point before switching on the refrigeration system Range 02 K to 20 K P62 Hold Hysteresis Allowable temperature increase from hold cycle air temperature Set Point before switching on the refrigeration system Range 02 K to 20 K P63 APM Time Automatic Program Mode ...

Page 17: ...time that the Defrost period will last before reverting to the chill or hold cycle Range 01minute to 60 minutes P72 Defrost End Temp The coil temperature as detected by the evaporator probe at which the Defrost function will terminate before reverting back to chill or hold mode Range 0 C to 10 C P73 Drain Time The time period following the defrost routine terminated by time or temperature that is ...

Page 18: ...ilarly if the measured hold temperature is greater than or equal to program hold set point hold hysteresis high alarm temperature value the alarm will sound Range 1 C to 50 C P83 High Alarm Delay The delay period between a temperature alarm condition occurring 00 minutes Instantaneous audible alarm 01 to 120 minutes period of delay P84 Alarm Time The length of time which the alarm will sound for a...

Page 19: ...ycle if safe to do so The distinction between an alarm and a warning is that a warning may be a non critical occurrence such as door open or temporary power failure An alarm would be for a system failure such as a probe fault or high pressure fault which would require positive intervention High pressure developing in the refrigeration system as a result of to high food temperature condenser fan fa...

Page 20: ...econds from start Relay 6 is energised after 360 seconds from start of test for 90 seconds de energises 450 seconds from start Relay 7 is energised after 570 seconds from start of test for 20 seconds de energises 590 seconds from start All relays are de energised on completion of the test At any point during the test pressing and holding the dial for 2 seconds can stop it The test will be terminat...

Page 21: ... switch which is set at 18 BAR with a 3 BAR diff The RBC20 60R has the same refrigeration systems but the condensing units are remotely sited The parameter Capacity Enable is set to AUTO to allow for both condensing units to be running at the start of the chill cycle therefore maximising the heat extraction from the product On reaching HOLD one of the condensing units will shut down During the HOL...

Page 22: ...21 EVAPORATOR ASSEMBLY RBC20 60 SERVICE PLATE SYSTEM 1 SYSTEM 2 PHIALS MUST BE FITTED IN THE HORIZONTAL POSITION AND CORK TAPED FAN PLATE ...

Page 23: ...CONDENSER DUAL CIRCUIT COMPRESSOR COMPRESSOR EVAPORATOR DUAL CIRCUIT SIGHT GLASS SOL VALVE DRIER SIGHT GLASS SOL VALVE DRIER EXP VALVE EXP VALVE LIQUID RECEIVER LIQUID RECEIVER HP SW HP SW LP SW LP SW PHIAL PHIAL STAT EQUALISING LINE EQUALISING LINE ...

Page 24: ...23 COMPRESSOR WIRING RBC20 60 ...

Page 25: ...RBC20 60 1 of 2 Wiring Diagram 24 ...

Page 26: ...RBC20 60 2 of 2 Wiring Diagram 25 ...

Page 27: ...RBC20 60R 1 of 2 Wiring Diagram 26 ...

Page 28: ...27 RBC20 60R 2 of 2 Wiring Diagram ...

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Page 32: ...com F F T Germany oster Refrigerator Germany el 0781 96 93 00 Fax 0781 96 93 019 Email info fosterrefrigerator de F T oster Refrigerator ldmedow Road King s Lynn orfolk Pe30 4JU ngland el 01553 691122 ax 01553 691447 ebsite www fosterrifrigerator co uk F O N E T F W Email sales foster uk com a Division of ITW UK Ltd BC20 SM 0107 R ...