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Heatcraft Refrigeration Products BEACON II H-IM-79E, Инструкция по установке и эксплуатации

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28

Wiring

Содержание BEACON II H-IM-79E

Страница 1: ...s 12 13 Program Review Button Select Button Enter Button Monitoring Items 14 Monitor Button Force Defrost Button Force Service Button Reset Time Button Clear Test Button Locking The Beacon II Board 15 Status Indicator LED 15 16 Low Ambient Operation 16 Pumpdown 16 17 Defrost 17 18 Alarms 18 Error Indicator 19 Checking Operation of Expansion Valve 20 21 Power Failures 21 Spare Sensor Terminals 21 C...

Страница 2: ...2 2007 Heatcraft Refrigeration Products LLC ...

Страница 3: ... II Board Layout BEACON II BOARD Defrost Heater Relay Evaporator Fan Relay LED Display Room Sensor Defrost Sensor Suction Sensor Suction Pressure Expansion Valve Connection Selection Buttons 24V Terminal Block ...

Страница 4: ...ms may require the crankcase heater be energized 24 hours prior to start up The Beacon should be de energized for this period by placing it in the SERVICE MODE This is done by pressing the FORCE SERVICE button twice To start the system cooling press the CLEAR button Room sensors must be left connected on ALL evaporators A pressure transducer is installed on the evaporator Do not leak test system a...

Страница 5: ...th local electrical codes Wiring Wiring between the condensing unit and the unit cooler s will be as follows see wiring diagrams High voltage There may be high voltage on the defrost heater relay and the fan relay The evaporator may also be connected to a separate power supply from the condensing unit See unit cooler spec plate for ampacity Brazing Low voltage 24V Class II control circuit A total ...

Страница 6: ...n repeatedly until SLA appears then use the SELECT knob to select YES then press ENTER All Beacon II boards are shipped with the factory default as a MASTER evaporator Place all boards in the SERVICE mode while you program the setpoints to avoid errors and alarms which may cause troubles at startup VERY IMPORTANT This must be done for each slave board Multiple Evaporator Configuration Master slave...

Страница 7: ...utes even if the box temperature goes above the differential temperature before cooling will be restarted The on board room thermostat is factory set at 35 F for Air Defrost systems and 10 F for electric defrost system Box Temp Control Settings Leak Testing After all lines are connected the entire system must be leak tested The complete system should be pressurized to not more than 150 psig with r...

Страница 8: ...specially in cold ambients This can be changed to a higher value in warmer climates On cooler units the low pressure switch has a fixed setting and cannot be adjusted Turn power on Start Up Operation On the evaporator Use the PROGRAM REVIEW button to scroll through settings Check rEF Refrigerant Type Factory defaults are Air Defrost R 22 Electric Defrost R 404A Change to the refrigerant being used...

Страница 9: ...e the PROGRAM REVIEW button to scroll through settings M Master Evaporator S Slave Evaporator CU Condensing Unit CU M S S S Start Up Operation Check rEF Refrigerant Type Factory defaults are air defrost R 22 electric defrost R 404A Change to the refrigerant being used Check bot Box Temperature Factory defaults are air defrost 35 F and electric defrost 10 F Change to the desired temperature Review ...

Страница 10: ...ot be adjusted Turn power on S S S M CU S S S M CU S S S M CU M S S S CU SMART CONTROLLER SYSTEM 1 SYSTEM 2 SYSTEM 3 SYSTEM 4 M Master Evaporator S Slave Evaporator CU Condensing Unit MULTIPLE SYSTEM CONNECTION See Smart Controller instruction manual for more details On the MASTER evaporator DO NOT REMOVE the room sensor from any evaporator On the SLAVE evaporators All Beacon II boards are shipped...

Страница 11: ...ll display BOX TEMPERATURE and Coo The SLAVE evaporators will display Coo only When the room thermostat setting is satisfied and if the compressor ran for at least 2 minutes the EEV will close and the compressor will pumpdown and shut off The evaporator fans will continue to run The LED will alternately display oFF and BOX TEMPERATURE Start Up Operation When the room sensor detects a rise in tempe...

Страница 12: ...emperature 40 F to 90 F ALL Set Alarm Low temperature 40 F to 90 F ALt Set Alarm time 2 to 120 minutes F C Set Fahrenheit Celsius temperature units F C The PROGRAM REVIEW button is used to program review and change all program settings for the system Press PROGRAM REVIEW button The Setpoint item will appear on the LED After a few seconds delay the Setpoint value will display Each time the button i...

Страница 13: ...e made for the number of defrosts cycles per day 1 2 3 4 5 6 8 10 or 12 per day If no Programming Reviewing Programming And Reviewing Settings Changes cont d Use the PROGRAM REVIEW button to select these items selection is made Defaults electric defrost 4 per day and air defrost 2 per day Defrost fail safe dFF This is the maximum time allowed for a coil to remain in defrost Defrost will be termina...

Страница 14: ...ORCE DEFROST To force a defrost press the FORCE DEFROST button The system will pumpdown and shut off the compressor The heaters are then turned on The display will show dEF and room temp Use this button to RESET TIME Pressing this button will reset the time clock in the microprocessor to zero At initial power up pressing this button will bypass the four minute hold off and the system will start im...

Страница 15: ...ps Coo Operating Mode is displayed Pumpdown All Evaporators Pdn DEFROST All Evaporators dEF TEST All Evaporators tSt SERVICE All Evaporators SEr ALARMS A 1 High Box Temp A 2 Low Box temp A 3 System Start up failure Compressor pumps down and tries to restart after 4 minutes A 4 Input Fault Box Temp Suction Temp Pressure Transducer open or not installed STATUS INDICATOR LED A RED three digit alphanu...

Страница 16: ...or more fans cycle on Pressure Fan Cycling switch An adjustable Time Delay relay factory set at 1 minute is wired across the Low Pressure switch LPS In cold ambient this allows time for the suction pressure to build up and prevent nuisance tripping of the LPS Pumpdown At the end of each cooling cycle when the box temperature is met the Beacon system will pump down and shut off the compressor To pu...

Страница 17: ...program the appropriate defrost delay start time for the next desired defrost period The defrost schedule will be correct until you have another power outage Pumpdown Defrost Service Mode A single pole single throw switch SPST is supplied in each condensing unit for shutting off the system Closing the SERVICE switch in the condensing unit will cause the system to pumpdown and shut off Ser will be ...

Страница 18: ...ition occurs When the Beacon II is energized the alarm contacts are OPENED When an alarm condition is detected the contacts are CLOSED Conditions under which the alarm contacts will close are High Box Temperature LED Display A 1 Room temperature has exceeded the Alarm High ALH value for the Alarm time ALt programmed Defrost Alarms Clearing Alarms Alarms A1 High Box Temp and A2 Low Box Temp will cl...

Страница 19: ...rror Error Indicator Led At initial power up each Beacon II board checks for system errors The system error check involves checking the various temperature sensors to determine whether any of these sensors are shorted or open The system will pumpdown and cycle off and will not restart until the fault is cleared or the circuit breaker reset for the following conditions Suction sensor shorted open o...

Страница 20: ...icate the number of steps the valve is open This can also be checked by using the EXV test pins on the board This is indicated by a 0 to 5 Volts DC signal At 0 Volt the valve is closed and at 5 Volts the valve is fully open At values between 0 and 5 Volt the valve will be opened proportionately Use the MONITOR button to display SCP Evaporator Suction Pressure Record the pressure displayed Start th...

Страница 21: ...e spare sensor Power Failures Measuring resistance between locations A and C or B and D will always show Open because these locations are between the motor windings When the valve is opening or closing the voltage measured between A and B or C and D should be between 20 to 22 VAC Continued from Page 20 Measuring the DC volt of the EXV TEST pins on the board will also indicate if the expansion valv...

Страница 22: ... min 30 min Defrost End Temperature dFt 45 F 60 F Defrost Delay Start Time dFS 0 hrs 0 hrs Alarm High Temperature ALH 50 F 5 F Alarm Low Temperature ALL 30 F 15 F Alarm Time ALt 60 min 60 min Temperature Units F C F F Table 1 Resistance Temperature Specification Temperature F Ohms Temperature F Ohms 104 5 320 32 32 650 86 8 060 23 42 330 77 10 000 14 55 330 68 12 490 5 72 950 59 15 710 4 97 070 50...

Страница 23: ...on II Communications Hub 89708001 Only the sensor with white leads is shipped as a service replacement part Smart Controller Software package is sold separately OPERATIONAL LIMITS Voltage Range 18 VAC to 30 VAC Controlling Box Temp Range 30 F to 70 F Temperature Differential 2 F Cold Ambient Limits Start operate to 20 F Table 4 Operational Limits Commercial Refrigeration Parts Replacement Parts by...

Страница 24: ...oss COMP and C at board Go to primary and wiring of 208V power taps compressor will not run 3 Check Compressor Contactor Coil Voltage next step 3 Check internal condensing unit wiring 4 Check Compressor Contactor pulled in 4 Replace as needed ERROR CODES E1 Room Sensor Check Sensor and Board Connection Replace as needed E2 Defrost Sensor Check Sensor and Board Connection Replace as needed E3 Sucti...

Страница 25: ...st or replace faulty controls Check liquid line sizing Correct line sizing Check for liquid line restrictions Repair line or remove restrictions Check operation of HPS Replace HPS if necessary E7 Compressor 4 Oil Pressure Safety OPS Tripped Shutdown Check oil level in compressor Add oil to crankcase to minimum level Check oil sump screen pickup Clean or replace pickup screen Check oil pump pressur...

Страница 26: ...ave1 Slave 2 Slave 3 1 E9 E9 E9 E9 2 E9 no error E9 E9 3 E9 no error no error E9 4 E9 no error no error no error With Beacon II Smart Controller Line SMART Master Slave1 Slave 2 Slave 3 1 COMM E9 no error no error no error 2 COMM no error E9 E9 E9 3 COMM no error no error E9 E9 4 COMM no error no error no error E9 5 COMM no error no error no error no error PROBLEM Step ACTION ITEM IF OK IF NOT OK ...

Страница 27: ...point and refrigerant 13 Check for iced evaporator coil 13 Defrost coil and check defrost cycle see E2 settings setpoints and defrost sensor 14 Check defrost parameters 14 Correct defrost setpoints in program frequency and termination of defrosts 15 Check superheat setpoint too high 15 Correct setpoint for more cooling surface 16 Check display values F or C 16 Correct setpoint for proper display v...

Страница 28: ...28 Wiring ...

Страница 29: ...29 Wiring ...

Страница 30: ...30 Wiring ...

Страница 31: ...31 Wiring ...

Страница 32: ...32 Wiring ...

Страница 33: ...33 Wiring ...

Страница 34: ...should always be insulated g Wiring diagrams instruction bulletins etc attached to the condensing units should be read and filed for future reference h All fan motors on air cooled condensers evaporators etc should be checked for proper rotation Fan motor mounts should be carefully checked for tightness and proper alignment Preventive Maintenance 8 Check that all defrost controls are functioning p...

Страница 35: ...t 8 F No of Defrost Day 4 Defrost End Temp 65 F COOLER Refrigerant Type R22 Box Setpoint Temp 35 F Superheat 8 F No of Defrost Day 2 Defrost End Temp 50 F SYSTEM CHECKS Check Compressor Superheat for the COOLER Should be between 20 F 30 F YES NO Check Compressor Superheat for the FREEZER Should be between 20 F 30 F YES NO Force unit into a Defrost Check heater amps Should match nameplate amps YES ...

Страница 36: ...mpressor Amps ______L1 ______L2 ______L3 Cooler Discharge Pressure ______PSIG Freezer Discharge Pressure ______PSIG Cooler Suction Pressure ______PSIG Freezer Suction Pressure ______PSIG Cooler Suction Temp ______ F Freezer Suction Temp ______ F Cooler Refrigerant Charge ______lbs Freezer Refrigerant Charge ______lbs Cooler Compressor Superheat ______ F Freezer Compressor Superheat ______ F Cooler...

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