full example of ReFreeX™ method
Contents
1. CORE lt 235 er ia XY i 7 XY i j J kar ker l ot F 7 PA G E P S 2 a 66 s aspirante in posizione sala SA AN L 466 Suction pipe probe located at 6 o clock E 531 482 gt lt _ 265 264 SOW PARA n Meet i CAN IA ERA FN RN 484 484 EN oe eye es e 485 ES 248 ww i N AJ ENS SR SE A 473 470 471 472 iy ae Ai e Montati sul compressore Fitted on the compressor COPYRIGHT MICHELETTI IMPIANTI 2002 OD MICHELETTI IMPIANTI Atiachment nr s of doc D133X1 QUADRO 1 80 HP MICRO BOARD 1 80 HP MICRO R H S i 1 T i F3 F2 N EV MC N T ci Z F1 2 N 1 GE S LEGENDA LEGEND 880 CONTROLLORE MC EV FRIGODIFFUSORE EVAPORATOR CONTROLLER MC MOTOCOMPRESSORE MOTORCOMPRESSOR a 10 RO RISCALDAMENTO OLIO OIL HEATER i TR FILTRO P1 5KE400CA FILTER P1 5KE400CA l l o Zz RO ua Zz Ir rt DI OUT 4 NO UT 5 UT 6 com DN N o O O A E Z x E m i I Q Ss E o gt o le O CB MICHELETTI IMPIANTI Attachment nr 4 of doc D133X1 IMPIANTO ELETTRICO 1 802. 6 mE b6C calibration offset 99 99 0 0 bar b6A use probe to calculate discharge pressure OFF on_ on b7_ Probe nr 7 A b7C Calibration offset 99 99 0 0 bar b7A use probe to calculate suction pressure OFF on_ on b8_ Probe nr 8 PRI b8C calibration offset 99 99 0 0 C b8A use probe to calculate discharge line temperature OFF on_ on b9_ Probe nr 9 A UE b9C Calibration offset 99 99 0 0 bar b9A use probe to calculate oil pressure connected to AN 5 oFF on_ OFF Functions about alarm and stand by PR LEE Temperature alarm aE 16 LtL low temperature alarm set point 55 145 24 Ke 17 LtH high temperature alarm set point 55 145 14 C Ltd alarm delay dd hh mm ss 30 min LF_ Full stop temperature alarm AW LFL low temperature alarm set point 55 145 5 Le LFH high temperature alarm set point 55 145 20 CT LFd alarm delay dd hh mm ss 30 min Li Humidity alarm AE LiL low humidity alarm set point 0 100 0 LiH high humidity alarm set point 0 100 100 Lid alarm delay dd hh mm ss 30 min Lj_ Full stop humidity alarm AE LjL low humidity alarm set point 0 100 0 LjH high humidity alarm set point 0 100 100 Ljd alarm delay dd hh mm ss 30 min LO_ Door alarm AU LOH enable door alarm oFF on_ on LOd door alarm delay dd hh mm ss 30 min LOt temperature alarm minimum delay after door opening dd hh mm ss 15 min LI Other alarm inputs AE L1H enable digital input 1 alarm compressor
3. HP SBR G C MICRO ELECTRIC PLANT 1 80 HP H G DEFR MICRO Tabella sezioni OUT 1 OUT 6 alo INP 1 AN 3 AN 8 AN 5 AN 6 AN 7 AN 4 FAN Wire and pipe O O n O O Q 4x2x24 AWG 4x2x24 AWG S SON XX 2 SCHERMATO SCHERMATO E z 0 eS i SHIELDED SHIELDED ST rg N I sp ka S 2 MO o G Q a Fr TE ala a p a E Fe sy r Ter ST F 2 Il Il 9 7 Il Il U V WiL Ni L N jjL NIL N I 11 391 311 3 iL eel Il II I Il Il Z Xx Y Hull Il II Il i WU a EU lai Il Il II II ee e ERP ESP EP EN MC RO SF SG RB TH PA SU DI Ol Il HP Il LP ER CO OUT 3 INP 2 OUT 5 O
4. I MICHELETTI IMPIANTI Full Example of ReFreeX Method 1 Content 1 Content 2 Introduction 2 1 Whatis ReFreex 2 2 Whatis this example about 2 3 Disclaimer 3 The application 3 1 Usage 3 2 Main specification 3 3 The ReFreeX refrigeration circuit 3 4 Full specification 3 5 Attachment list 3 6 Cross reference 4 Patents marks and contacts 4 1 Patents 4 2 Marks 4 3 Contacts 2 Introduction 2 1 What is ReFreex It is a new and improved refrigeration method described elsewhere in the document D133V and D133W 2 2 What is this example about This is a full example of a modern refrigeration plant built with the ReFreeX technology This example is meant to be understood by an experienced designer of refrigeration plants 2 3 Disclaimer The information herein provided is believed to be accurate and this specific refrigeration plant has been successfully installed and tested like several other similar plants but nor the author nor the company Micheletti Impianti do assume any responsibility for the information herein provided This is a guidance example for expert designers of refrigeration plants to be used under their own responsibility with any eventual modification that can be required Local regulation may impose different or additional safety devices 3 The application 3 1 Usage The refrigeration plant is to be used in a cold room for frozen food storage at 25 C 3 2 Main specification
5. suction line suction line insulation refrigerant gas lubricating oil electric board master controller slave controller mc side slave controller room side door limit switch O PPP ER e HR E HER e a a GS m a e e U1 PrP PP PP Pe pe Ww W o oO PrP WE HW 30 30 PrP PP HE Unit pc pc pc pc pc pc pc pc pc pc pc m pc pc m pc pc pc pc pc pc pc pc pc m m pc pc pc pc pc m m kg kg pc pc pc pc pc Rif eb c17 m187v5 2006 04 13 d133x1_att_O1 xls Description Bitzer 4G 30 2Y 30 hp 84 5 m3 h semi hermetic reciprocating compressor Bitzer 140 w oil heater heating cable 50 cm 30 ohm 12V 5w vibration isolator D22 mm vibration isolator D42 mm 0 30 bar 4 20 mA pressure probe 0 30 bar 4 20 mA pressure probe 0 30 bar 4 20 mA pressure probe ntc ss141 25 C 10kohm 1 stainless case 3m silicon cable standard ntc ntc ss141 25 C 10kohm 1 stainless case 3m silicon cable standard ntc Danfoss Saginomyia mini pressure switch ACB 28 21 bar copper piping D22x1 mm LU VE SHVN 38 1 phi 2x2x350mm 36 4 kw at dT 15K ntc ss141 25 C 10kohm 1 stainless case 3m silicon cable standard ntc copper piping D12x1 mm ball shut off D12 mm Danfoss DML84S D12 mm drying 8g H20 at 52 C and 30ppm Danfoss SGN12S D12 mm showing H20 at 25 100 ppm EVR6 NC D12 min dp 0 05 bar kv 0 8 m3 h of H20 at dp 1 bar Danfoss coil NC 230 V 50 Hz 10 w 21 VA IP67 1 m cable ball shut
6. 4 Pp_ccm_c_ n O a a a a a a a D MICHELETTI IMPIANTI Push button B1 esc silence B2 up B3 on stand by B4 left light B5 down defrost B6 right menu B7 light man alarm Led L1 cooling L2 evaporator fan L3 defrost L4 air renew L5 heating L6 ethylene L7 light How to Switch between on and stand by Stop and restart evaporator fans Program the menu Show change temperature Force an air renew Force a defrost Buttons to press B5 B6 B2 Alarm min temperature max temperature mc alarm evaporator alarm defrost alarm door alarm phase alarm min temperature max temperature oil alarm min humidity max humidity min humidity max humidity Display 3 dashes 3 dots A01 A02 A03 A04 A05 A06 A07 A08 A09 A10 A11 A12 A13 A14 Led and push button location Function Exit without saving from any menu Alarm buzzer silence Up navigation in the menu Toggle between on and stand by toggle evaporator fan stop Left navigation in the menu Switch light on and off Down navigation in the menu Force immediate defrost Display and set temperature Right navigation in the menu Enter menu Remote button located inside the room near the door Switch light on Man in room alarm Function On during cooling blinking slowly during activation delay On when evaporator fans are activated blinking slowly during activation delay On when defrost is activated blinking slow
7. N L N L N gt Non ponticellare gli ingressi A HOMO KOLD AN n v EXTH aS P_H302V2 A A gati Re TEx A A QD Sucar A example g VY T T VIZI 2 Slave P_H301V2 Slave P_H301V2 2 E lt eom com com y L I Ino not short AN inputs nor qo qo Ons ven TI i T TI HE 7 5 5 mm pobol wi Qo aaa O C K e e e a e a a e a a a a e 0e QqQqQ0 000 a Bree AB AB AB LN 4 4 4 4 t ile SLAVE PC INP 5 AN 1 AN 2 AN 3 AN 4 AN 5 AN 6 AN 7 AN 8 V EXT INP 1 INP 2 INP 3_INP AN x AN x AN x AN x T T TTT T Rat i T lt T T_ RS485 lag Ta Tas Tea IRR ked z da n ze x 2 x 2 x 24 AWG cavo intrecc e schermato mettere a terra la calza du Saul leo 2x 2 x 24 AWG cable twisted and shielded ground the shield 230Vac out 12 Vdc 100 mA 4 20mA NTC PT 00 No Usare cavo intrecc e scherm e mettere a terra la calza Collegare tutti i master a catena non collegare a stella Use iwisted and shielded cable and ground the shield Chain all masters do not create star links 470 ohm 0 1w i J 2x24 AWG Input analogici del master Master analog inputs eetl AN 1 AN 2 AN 3 AN 4 AN 5 AN 6 AN 7 AN 8 Model 5xNTC 3x20 mA nte ntc ntc nte mA mA MA ntc COPYRIGHT MICHELETTI IMPIANTI 2002 D MICHELETTI IMPIANTI MI 1000 user manual Attachment nr 6 of doc D133X1 Note Parameter Description Range Default Un
8. The refrigeration plant has a 30 hp compressor air condensation and R404A refrigerant Nominal cooling capacity is 9350 watt at 35 C evaporation and 45 C condensation 3 3 The ReFreeX refrigeration circuit The ReFreeX refrigeration system is a dry expansion refrigeration system and includes a compressor a condenser coil and an evaporator coil No liquid receiver is installed and no thermostatic valve is provided Expansion is performed in the piping connecting the condenser to the evaporator Regulation is performed by a plain solenoid valve periodically pulsed on and off 3 4 Full specification Full specification is provided in the attached part list and in the other attached drawings Part list omits small components and complements like eb c17 from M181C1 20 10 1997 doc code in the header file D133X1 Rev 01 doc last saving 13 04 2006 page 1 2 BD MICHELETTI IMPIANTI anchors fixings fittings bends siphons soldering alloy evaporator drain wiring materials 3 5 Attachment list attachment 1 part list attachment 2 circuit drawing attachment 3 electric board attachment 4 electric plant attachment 5 controller wiring attachment 6 user manual 3 6 Cross reference e doc D133V ReFreeX Refrigeration Method an explanation of method and principles e doc D133W Economical Analysis of ReFreeX Method cost comparison versus the traditional method 4 Patents marks and contacts 4 1 Patents Europ
9. UT 6 AN 2 AN 1 AN 5 SLAVE INP 4 eje dH0O AC Legenda Legend w n NPS o onono 4x2x24 AWG 4x2x24 AWG condensatore condenser 7 g mR MR gi SCHERMATO SCHERMATO temperatura sbrinam defrost temperature a FE de e SHIELDED SHIELDED temperatura premente discharge temperat microswitch porta door switch BOX 1 sicurezza sbrinamento defrost safety temperat aria ingr CO CO air inlet temperat frigodiffusore evaporator o o o o o alta pressione high pressure 3 sangro ai N reat EATR k r umidit humidity 3 i ldo tee Pe bassa pressione low pressure LU EV RS DE RM i HU l SL H DO illuminazione lighting gt i controllore master master controller soii motocompressore motorcompressor HNOOTT Lu pressione olio oil pressure LIII a pressostato alta high pressure switch LO OF is ol L J 7 quadro elettrico electric board BOX 1 QU BOX 2 BOX 3 Q 15oxt10x70 5 bo MC 4 150X110X70 riscaldam scatola mc mc box heater gt pia gt SS SS temperat aria ingr EV EV air inlet temperat E g E SILICONARE S g q K je E R riscaldamento olio oil heater do A gel SILICON di dZ a A risc sc con e piatto drain pipe and tray SL DE EV Q ails g S 2 Z solenoide liquido liquid solenoid JRM i oau solenoide gas caldo hot gas solenoid i controllore slave slave controller temperatura aspirante suction temperature sonde termistori MC thermistor probes morsetto QU QU termina
10. ean patent nr 04425426 6 is pending USA patent nr US10 956 297 is pending PCT patent deposited with international application number PCT IT 2005 000268 4 2 Marks ReFreeX USA mark application filed with serial nr 78509794 4 3 Contacts Please contact Micheletti Impianti C ne Appia 33 00179 Roma Italy www micheletti org Mr Emidio Barsanti Phone nr 39 06 7883363 Fax nr 39 06 789716 E mail Emidio Barsanti micheletti org eb c17 from M181C1 20 10 1997 doc code in the header file D133X1 Rev 01 doc last saving 13 04 2006 page 2 2 Code 252 208 522 214 215 472 470 471 466 467 473 235 201 468 531 481 218 219 247 248 483 482 264 265 484 485 527 224 512 464 465 234 TT MICHELETTI IMPIANTI Part list attachment nr 1 of doc D133X1 Component compressor crankcase oil heater mc electric box heater vibration isolator vibration isolator oil probe lp probe hp probe suction temp probe discharge temp probe fixed hp switch discharge line condenser condenser air temp probe liquid line from condenser liquid line shut off filter drier sight glass liquid solenoid valve body liquid solenoid valve coil liquid hot gas shut off hot gas shut off hot gas solenoid valve body hot gas solenoid valve coil liquid hot gas line liquid hot gas line insulation refrigerant net filter evaporator without defrost evaporator drain tray heater room air temp probe defrost temp probe
11. it Sin Functions about storage I mu St Functions about storage temperature if am to storage room temperature _tL _tH 2 C _tb room temperature dead band 0 99 0 Cc _td room temperature differential 0 99 OP RE _tH maximum room temperature set 55 145 453 BE tL minimum room temperature set 55 145 55 RE _i0 storage room humidity asse ln 85 _ib room humidity dead band 099 0 _id room humidity differential 0 99 JA JH maximum room humidity set 0 100 100 _IL minimum room humidity set 0 100 0 SA_ Functions about air renew during storage or SAH enable air renew during storage oFF on_ oFF SA0 immediate delay before first air renew dd hh mm ss 0 h SAd on time duration in the air renew cycle dd hh mm ss 30 min SAP period of air renew cycle dd hh mm ss 12 h SAh enable forced air renew by keyboard short cut oFF on_ on SAF forced air renew duration dd hh mm ss 30 min SAo start stop forced air renew oFF on_ oFF Fd_ Functions about defrost duration and timing mu Fd0 immediate delay before next defrost dd hh mm ss 0 min Fdd on time duration of the defrost dd hh mm ss 30 min Fdg dripping time after defrost dd hh mm ss 2 min FdE evaporator fan activation delay after the defrost dd hh mm ss 2 min 1 FdP overall period of the defrost time between two consecutive starts or stops dd hh mm ss 4 h Fd1 evaporator fan pulse duration 0 005 s units select 0 for no pulse during defrost 0 255 0 par Fd2 evaporator fan pu
12. l ALIMENTAZIONE mors potenza QU QU power termin 380V N T morsetto MA MA terminal POWER SUPPLY 380V N G Se manca il cavo giallo verde per la If there is no green yellow wire for terra del compressore usare del compressor ground use the cavo colorato e segnarlo con il coloured one and mark it with the g y nastro g v tape Per frigodiffusori trifase collegare For triphases evaporators connect INP 2 al termico e portare 3 cavi da thermal safety to INP 2 and connect 1 5 mm2 per le ventole the fans with 3 x 1 5 mm2 wires Z La resistenza nello scarico condensa Drain tray and drain pipe n e nel piatto evaporatore installata resistances are installed in low solo nelle celle negative temperature rooms only I compressori senza pompa olio non Compressor withou oil pump do not m hanno la sonda olio have oil probe L TE MICHELETTI IMPIANTI Atzonment nr s of doc D133X1 COLLEGAMENTI PER CONTROLLORI MI MI CONTROLLER WIRING 6A AC3 15A AC1 jj 4A AC3 10A AC1 1 230Vac r t av aw av ro 230Vac La g g a o e N L OUTS OUT 5 OUT 4 FAN OUT 3 OUT 2 OUT 1 L N Esempio collegam sonde 2 Master QD Ne ene Tune N L
13. l relay or other hardware evaporator safety has disconnected Defrost thermostat of other hardware defrost safety has disconnected Door open Compressor overload thermal relay disconnected or missing mains phase manual reset Minimum temperature exceeded full plant stop Maximum temperature exceeded full plant stop Minimum oil pressure alarm manual reset Minimum humidity exceeded Maximum humidity exceeded Minimum humidity exceeded full plant stop Maximum humidity exceeded full plant stop Status description Slave is receiving settings from master Slave is sending settings to master eb c17 file U131V7 Rev 01 xls 2004 08 09 page 4 4
14. lse period dd hh mm ss 1 min FF_ Functions about forced defrost FFh enable forced defrost by keyboard short cut OFF on_ on FFd forced defrost duration dd hh mm ss 30 min 2 FFo start immediate forced defrost oFF on_ OFF FP_ Functions about defrost preference ME FPt defrost type 0 none 1 pause 2 air 3 electric 4 hot gas 5 heat pump ORs 2 par te Functions about defrost temperature ae Ftt defrost probe stop temperature 55 145 6 C M__ Functions about compressor aE MU_ Functions about pressure switches if AD MLH low pressure safety restart similar to Danfoss KP15 Ip set point 0 30 1 2 bar MLL low pressure safety stop similar to Danfoss KP15 Ip set point differential 0 30 0 2 bar MHH high pressure safety stop similar to Danfoss KP 15 hp set point 0 30 16 0 bar MHL high pressure safety restart similar to Danfoss KP 15 hp set point differential 0 30 14 0 bar 3 MUO minimum oil differential pressure 0 30 2 0 bar 4 MUU pump down OFF on_ OFF H Heating a Ys HP_ Heating preference if AU HPP heating method 0 none 1 electric 2 hot gas 3 heat pump oms 0 par HPF heating source 0 dedicated heating 1 defrost 2 light om2 O par U_ Dehumidification IL UP_ Dehumidification preference a UPP concurrent refrigeration and heating alternate refrigeration and heating con ALt con 5 UP1 during concurrent run force active refrigeration heating rEF HEA rEF n Functions ab
15. ly during activation delay On when air renew is activated blinking slowly during activation delay On when heating is activated blinking slowly during activation delay On when ethylene is activated blinking slowly during activation delay and during ripening On when light is activated blinking slowy during switch off delay Operation description Keep pressed the B3 button to toggle between on and stand by In stand by every output is disabled except light In stand by leds L1 to L6 blink counters continue to count you can enter the menu and change parameters Press the B3 button to manually stop or restart evaporator fans When evaporator fans are stopped the display blinks Keep pressed B6 to enter the menu Navigate up and down with B2 and B5 Select the submenu by B6 Change the parameter by B2 and B5 confirm it pressing B6 or go back without saving by B4 The changes will have effect when you exit from programming pressing B4 repeatedly Press B1 to exit immediately without saving any parameter Enter programming modify tO then confirm it Keyboard short cut press shortly B6 the display shows the current set point change it and confirm it by B6 Keep pressed B6 B2 Keep pressed B5 Shortcut description keep pressed 5 seconds Immediate defrost Activate forced air renew Alarm description Minimum temperature exceeded Maximum temperature exceeded Pressure switch or other hardware compressor safety has disconnected Evaporator therma
16. n vPP refrigerant gas type 0 R134A 1 R404A orm 0 par vi Functions about electronic expansion valve temperature I 1 10 vtt wanted overheating similar to Danfoss thermostatic overheating spring regulation 0 99 8 0 C 11 vtH maximum overheating 0 99 12 0 C 12 vtL minimum overheating 0 99 60 C vtU maximum pressure allowed in the suction line similar to Danfoss MOP 0 30 10 0 bar vd_ Functions about electronic expansion valve timing DEI 13 vdl on off duty cycle duration dd hh mm ss 15 sec 14 vd2 on duty cycle duration when refrigeration starts set to 0 to remember previous stop value dd hh mm ss 2 sec 15 vdd on duty cycle adaptation speed low value for slow adaptation and small swinging 19255 8 par b Functions about probes AE bl Probe nr 1 a b1C calibration offset of analog input 1 temperature 99 99 0 0 C blA use probe to calculate room temperature OFF on_ on b2_ Probe nr 2 mu b2C calibration offset 99 99 0 0 C b2A use probe to calculate defrost temperature OFF on_ on b3_ Probe nr 3 ME b3C calibration offset 99 99 0 0 C b3A use probe to calculate suction line temperature OFF on_ on_ b4_ Probe nr 4 Aw b4c Calibration offset 99 99 0 0 C b4A use probe to calculate condenser air inlet temperature oFF on_ on b5_ Probe nr 5 Hh b5C Calibration offset 99 99 0 0 b5A use probe to calculate room humidity connected to AN 5 OFF on_ on b6_ Probe nr
17. off D16 mm ball shut off D16 mm Danfoss EVR10 NC D16 min dp 0 05 bar kv 1 9 m3 h of H20 at dp 1 bar Danfoss coil NC 230 V 50 Hz 10 w 21 VA IP67 1 m cable copper piping D16 mm armaflex like mm 16 x 9 Y filter D16 mm LU VE S3HC 284 N80 phi 4x350mm 15 8 kw dry at TC 0 C and dT1 8K heating cable 10 m 650 ohm 230 V 80 w ntc ss141 25 C 10kohm 1 stainless case 3m silicon cable standard ntc ntc ss141 25 C 10kohm 1 stainless case 3m silicon cable standard ntc copper piping D42x1 mm armaflex like mm 42 x 13 R404A refrigerant ester oil already present in the compressor crankcase 30 hp ReFreeX electric board ReFreeX master controller ReFreeX slave controller ReFreeX slave controller metal case limit switch with adjustable wheel arm pag 1 1 CB MICHELETTI IMPIANTI Attacnment nr 2 of doc D133X1 SCHEMA FRIGORIFERO MICRO SBR GAS CALDO REFRIGERATING CIRCUIT HOT GAS DEFR MICRO LLL Soffitto cella Room ceiling N V AY max 3m NNN FT JTS 7 AT T A he Jr uf A LI Mii ni Sonda in aria 30 cm dietro all evaporatore 464 465 pa Air probe 30 cm behind the evaporator Sonda sul tubo aspirante alle ore 6 234 7 Suction pipe probe located at 6 o clock SG Sonda in aria dietro al condensatore 68 3 Air probe behind the condenser max 3m 4 A
18. og input 6 high pressure 0 30 IA7 analog input 7 low pressure 0 30 IA8 analog input 8 discharge temperature 55 145 IA9 analog input 5 oil pressure 0 30 Id_ Digital input Id1 digital input 1 compressor hardware safety OFF on_ Id2 digital input 2 evaporator hardware safety OFF on_ Id3 digital input 3 defrost hardware safety OFF on_ Id4 digital input 4 door opening oFF on_ Id5 digital input 5 phase 1 software safety oFF on_ os Machine status OSn evaporator fan stopped by door opening or manual control OFF on_ OA_ Analog output LLA actual alarm read only 0 means no alarm 0255 OA1 analog output 1 condenser 0 255 OA2 analog output 2 humidity 4 20 mA 0 255 Od_ Digital output Odl digital output 1 solenoid oFF on_ 0d2 digital output 2 heating oFF on_ 0d3 digital output 3 light oFF on_ 0d4 digital output 4 compressor oFF on_ Od5 digital output 5 evaporator oFF on_ Od6 digital output 6 defrost OFF on_ Od7 alarm eventually connected to relay nr 2 OFF on_ Od8 steam producer eventually connected to relay nr 2 OFF on_ Od9 air renew eventually connected to relay nr 2 OFF on_ E Functions about slave preferences Ed_ Functions about network address EdS slave address for local network communication 1 254 EY Functions about display EYY input to show on display 1 temperature 2 humidity Isa Note list The period of each cycle includes on time off time tha
19. out fans ME nc_ Functions about condenser fans mu ncH enable condenser fans when compressor is offand discharge pressure is over maximum OFF on_ on 6 ncr enable condenser fans speed regulation OFF on_ OFF ncU fan minimum speed 0 255 128 par ncd minimum pressure difference between discharge and suction 0 30 2 0 bar n1H fan 1 start pressure similar to Danfoss KP5 set point active just when ncr is oFF 0 30 10 0 bar n1L fan 1 stop pressure similar to Danfoss KP5 set point differential 0 30 6 0 bar nE_ Functions about evaporator fans Ni nEH enable evaporator fans when refrigeration is off OFF on_ ORFS W em Functions about door and light mu CPR door switch and evaporator fan mu cPH stop evaporator fans when door is open OFF on_ on cPF pause defrost timer when air defrost is suspended by evaporator fan stop oFF on_ on_ cPd delay of fan automatic switch on dd hh mm ss 30 min em Functions about light ME 7 CIH switch on the light when the door is open and off when closed oFF on_ on_ eb c17 file U131V7 Rev 01 xls 2004 08 09 page 1 4 D MICHELETTI IMPIANTI clo switch oft the light automatically it ithas been switched on trom outside oFF on_ on_ cld delay of light automatic switch off dd hh mm ss 30 sec v Functions about electronic expansion valve mu vP_ Functions about electronic expansion valve preference a 9 vPH enable electronic expansion valve oFF on_ o
20. safety devices OFF on_ on Lid digital input 1 alarm delay dd hh mm ss 30 min L2H enable digital input 2 alarm defrost safety thermostat OFF on_ on L2d digital input 2 alarm delay dd hh mm ss 30 min L3H enable digital input 3 alarm heating safety thermostat OFF on_ on L3d digital input 3 alarm delay dd hh mm ss 30 min L5H enable digital input 5 alarm compressor phase monitor thermal overload relay oFF on_ on eb c17 file U131V7 Rev 01 xls 2004 08 09 page 2 4 D MICHELETTI IMPIANTI WOANAUBWNE HEHHHWEHEHLO QOIYNDQDUSWNEP O digital input 5 alarm delay dd hh mm ss Lo_ On stand by status Loo actual status stand by or on SbY on_ d__ Functions about delays dF_ Delay from previous stop dF4 delay from stop to activation of relay nr 4 compressor dd hh mm ss Pas Functions about master preferences Pd_ Functions about network address PdM master address for global network communication 0 254 PdS number of slaves connected to this master Isa PO_ Output assignment PO2 assign out 2 relay to 0 alarm 1 heating 2 humidifier 3 air renew 01588 lo Functions about input output and machine state read only IA_ Analog input IA1 analog input 1 temperature 55 145 IA2 analog input 2 defrost temperature 55 145 IA3 analog input 3 suction temperature 55 145 IA4 analog input 4 engine room temperature 55 145 IA5 analog input 5 humidity 0 100 IA6 anal
21. t is the overall duration of the cycle Following defrost cycles will be aligned to the end of forced one Fixed time 120 s and manual reset When activated pump down mode forces compressor continuous run switched off only by low pressure limit Forced refrigeration is disabled when room temperature is under LtL while forced heating is disabled over LtH Caution Speed regulation can cause fan fault or electronic board fault Low and average minimum speed can increase the risk The first pressure of push button inside the room near the door switches on the light the second one activates the man alarm No action if the light is switched on from inside the room When off the refrigeration solenoid is steadily on during cooling Caution Low overheating causes liquid return and compressor damage Overheating over the maximum forces valve anticipated opening Overheating under the minimum delays valve opening Caution Short duty cycle reduces valve life Caution Low overheating causes liquid return and compressor damage Caution High adaptation speed causes swing in the suction line and damage to the compressor The low temperature differential is fixed and alarm status stops at 0 2 C above the set point The high temperature differential is fixed and alarm status stops at 0 2 C under the set point The minus sign on display signals that output is going to start after a delay eb c17 file U131V7 Rev 01 xls 2004 08 09 page 3
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