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Unic AURA 2GR, Technical Note, Page: 28 / 37

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28

CHr

ECL

+

-

+

-

On

Aut

OFF

On

rGb

Fin

OFF

+

-

+

-

Chronometer

LED 

lighting

Press 3s

Press 3s

Press 1s

Press 1s

70

21

-

-

+

+

Decreases in steps of 1 

Decreases in steps of 1 

Increases in steps of 1 

Increases in steps of 1 

Temperature display in degrees Celsius

Mini = 60°C

Maxi = 100°C

tct

Cup 

warmer

+

-

On

OFF

+

-

Pri

Pri

On

OFF

Press 3s

Press 1s

Pri

Pre-

infusion

Display in seconds

Mini = 0s

Maxi = 2.5s

1.5

-

+

Decreases in steps of 1 

Increases in steps of 1 

Summary of Contents for AURA 2GR

Page 1: ...ing UNIC the first French manufacturer of professional espresso machines since 1919 The manufacturer reserves the right to modify the appliance presented in this publication without notice Read carefully the safety instructions before use AU9061 07 2019 ...

Page 2: ......

Page 3: ...ents 8 Adjusting the temperature using the pressure switch 8 Adjusting the expansion valve 8 Adjusting the pump pressure 9 Adjusting the water entry solenoid valve 9 Adjusting the coffee grinding 9 Ambiance lighting 9 Adjustment of mixer tap for the hot water 9 Sensibility of keyboard 10 Softener 10 Cup seal 10 Removing the grille 11 Maintenance 12 Specifications 12 Chart of LED signals 13 Dosamat...

Page 4: ... 31 Dosamat box 31 4 doses box 32 Copy setting between coffee boxes 32 Reset to factory values 32 Option SteamAir 33 Components 33 SteamAir key 33 SteamAir temperature adjustment 33 Cleaning 34 Reference of cleaning tools 34 After each use 34 Steam output tube 34 Daily 34 Before use or after several hours of inactivity 34 After the service 34 Weekly 35 Filter holder cup 35 Basin 35 Bodywork 35 Cle...

Page 5: ...e below 5 C 41 F the water circuit boiler piping must be drained if the device freezes wait 24 hours at a minimum temperature of 10 C 50 F before restarting the device Before connecting the power and water supplies check that the electrical and water network are in accordance with the technical information plate of the device The power supply must be provided with the following safety features pow...

Page 6: ...nscrew the nuts securing the machine to the pallet Separate the cardboard box from the pallet Remove the machine from the pallet and place it on wooden blocks Remove the transport screws and washers Preparing the site and installing the machine Position the machine in its final location and level it with rubber washers if necessary The machine must be installed on a flat surface It is necessary to...

Page 7: ...EATING ELEMENT SAFETY THERMOSTAT 1 2 5 6 3 4 Ph1 Ph2 Ph3 1 2 3 P1 P2 P3 A B N0 1 2 3 N RELAIS STATIQUES STATIC RELAYS VERS CPU TO CPU VERS CPU TO CPU RELAIS STATIQUES STATIC RELAYS 200 230 240 MONO TERRE 380 400 415 TRI N TERRE 200 230 240 TRI TERRE 200 230 240 SINGLE PHASE EARTH 380 400 415 3 PHASE N EARTH 200 230 240 3 PHASE EARTH Electrical connection None of the switches on the machine must be...

Page 8: ...ilers Open the water shut off tap Connect the mains electric plug Turn the power switch onto 1 Do not put on position 2 for as long as the boiler is not filled Steam boiler When the switched on the filling is done automatically Asafety is provided if the filling is not done before 3 minutes In this specific case the solenoid valve for filling and the pump cut off The display shows FL blinking Chec...

Page 9: ...termines the time for passing the hot water through the dose This time is usually monitored by using the two cup filter with two doses of coffee Average passing time for 2 cups 6 to 7 cl per cup 30 to 35 seconds If this time is shorter reduce the grinding If this time is too long increase the grinding To obtain a good result use at least 6 g of good ground coffee per cup Ambiance lighting The swit...

Page 10: ... is equipped with LED lighting disconnect the cable Remove the cup holder Allen key No 6 and the filter pipe wrench of 8 mm Unscrew the 2 screws of the tamper and remove the piston spring assembly photos no 1 and no 2 Remove the 2 O rings and the piston cup seal Clean the assembly Lubricate the seal Ref 27718 silicone grease and position it at the base of the unit photos no 3 and no 4 Prepare the ...

Page 11: ...1 allen key screw 2 5 mm key Remove the cup heater glass panels from the machine Remove the side panels and cup heaters Pull the grille upwards to get it out of its place There is no screw above the grille To refit the grille perform the same operations in reverse order 1 2 3 4 5 ...

Page 12: ...rk on the electrical circuits B Cool the machine and make the pressures drop before any work on the hydraulic circuit Specifications DIMENSIONS AURA 2GR AURA 3GR SETTINGS Width 79 cm 31 98 cm 38 5 Temperature 118 to 120 C 244 to 248 F Height 48 cm 19 48 cm 19 Steam pressure 0 9 to 1 bar 0 09 to 0 1 MPa Depth 60 cm 23 6 60 cm 23 6 Pump pressure 9 to 10 bar 0 9 MPa to 1MPa Weight 70 kg 154 3 Lb 80 k...

Page 13: ...oses shown because the last dose used is 2 large doses With filter holder During time self self mode Buttons not active During cycle self mode 2 large cups shown Coffee buttons active to switch dose And only touch continu stop active to stop cycle During continue cycle self mode Stop cycle by pushing only continu stop button Ready manual mode Without filter holder Ready manual mode With filter hol...

Page 14: ...ctive touch continu stop OFF During cycle 1 Small cup shown Coffee buttons active to switch dose And touch continu stop active to stop cycle Coffee dispensing 2 large cups shown Stop cycle by pushing button again or button continu stop Or button 2small cups if small dose is achieved During continue cycle Stop cycle by pushing any button ...

Page 15: ...t water cycle We Can stop the cycle manually with large hot water continu stop buttons Security at 105 seconds Steam cycle We Can stop the cycle manually with steam continu stop buttons Security at 180 seconds Automatic SteamAir cycle We Can stop the cycle manually with stemair continu stop buttons Simultaneous cycle of small hot water steam Display show steam in priority We Can stop the cycles ma...

Page 16: ...ter no signal No electrical problem but no signal propeller is blocked Flow meter time out Time out during a coffee cycle Time out at 2 min 120s Machine startup Boiler Filling 0 bar Safeguard FL Filling Boiler Filling Safeguard Machine cold 0 bar To Time out at 3 min 180s Machine is blocked no heating Check the water supply Boiler Filling Safeguard Machine hot 1 2 bar to Time out at 1min 45seconds...

Page 17: ...ring a coffee hall sensor dosamat Only manual works Coffee button not active Continu stop button active hall sensor dosamat Only manual works Coffee button not active Continu stop button active SteamAir probe disconnected Only if StA is ON When StA is ON Hot water and normal steam active SteamAir not active SteamAir probe disconnected When StA is OFF Hot water and normal steam active SteamAir acti...

Page 18: ...edure for updating software Copy the file into the USB key Use an USB key standard type A 2 Copy the received file in the USB key 1 Format the key right click Format option 3 Rename the file right click Rename ...

Page 19: ...is accessible 3 Insert the USB key into the USB port 4 Turn the main power switch ON position 1 Waiting 10 seconds DO NOT TURN OFF OR UNPLUG THE USB DURING UPDATE 5 Turn the main power switch OFF position 0 6 Remove the USB key The machine will not function with the card in place 7 Replace all covers and panels 8 Turn ON the machine 9 Check programmed settings for coffee water and steam The machin...

Page 20: ...4 N 1 2 3 N 1 2 3 ON OFF SWITCH R1 R2 DOSEUR EAU CHAUDE DOSEUR EAU G4 DOSEUR EAU G3 DOSEUR EAU G2 DOSEUR EAU G1 EV RE EV SV EV SE EV G4 EV G3 EV G2 EV G1 SNH CPV M POMPE PUMP MOTOR RESISTANCE HEATING ELEMENT CMD RELAIS 230V SECU CHAUDIERE VAPEUR STEAM BOILER Wiring diagram AURA 3GR 230V mono ...

Page 21: ...UR EAU G1 DOSEUR EAU G2 DOSEUR EAU G3 DOSEUR EAU G4 DOSEUR EAU CHAUDE EV RE EV SV EV G4 EV SE EV G3 EV G2 EV G1 CPV SNH M POMPE PUMP MOTOR 230V CMD RELAIS SECU RESISTANCE HEATING ELEMENT CHAUDIERE VAPEUR STEAM BOILER THERMOSTAT DE SECURITE RESISTANCE HEATING ELEMENT SAFETY THERMOSTAT Wiring diagram AURA 3GR 400V tri ...

Page 22: ...ey 1 small cup 2 small cups 1 large cup 2 large cups Continu stop Settings key Cleaning key Small cup Large cup Manual cycle launch Automatic cycle launch Continu stop Presentation of the various keyboards 4 doses keyboard Dosamat keyboard Display Display ...

Page 23: ...me SteamAir Hot water small volume Steam dose Continu stop Hot water large volume Steam dose large volume Hot water small volume Steam dose small volume Continu stop SteamAir keyboard Hot water steam keyboard Display Display ...

Page 24: ...LED Automatic Common only on GR1 5 tct Cup warmer OFF Group 1 master 6 CHr Chronometer OFF Group 1 master 7 Pri Pre infusion Pri ON 0 Pri OFF 0 Group 1 master 8 doS Dosamat OFF Group 1 master 9 ctS Continu stop key ON Independent on each group 10 rin Rinsing barista OFF Common only on GR1 11 doE Hot water dosing OFF Common only on GR1 12 StA SteamAir ON Common only on GR1 13 inF Paiement system OF...

Page 25: ...o 256 OFF 5 tct Cup warmer On Setting 60 to 100 C 140 F to 212 F OFF 6 CHr Chronometer On OFF Fin 7 Pri Pre infusion Pri On Setting 0 to 2 5s Pri OFF Setting 0 to 2 5s 8 doS Dosamat OFF CC 1t 2t Setting 0 to 9s cc cC 9 ctS Continu stop key OFF On 10 rin Rinsing barista Setting 0 to 4s 11 doE Hot water dosing On OFF 12 StA SteamAir On OFF 13 inF Paiement system OFF r_S E_E d_c c_d 14 dtY Tactile se...

Page 26: ...he programing by jumper on CPU on P1 jmuper 1st step press 3 seconds on prg key Pro do 2nd step press 3 seconds on cleaning key and cts key to enter in settings After 10s the m achine return to stand by m ode If we press on any other keys prog and coffee keys return to stand by mode P1 jumper ...

Page 27: ...1 Increases in steps of 0 1 Increases in steps of 1 Pressure shows in Bar Mini 0 50 Maxi 1 50 Display of the number of coffee cycles between 2 compulsory cleanings per group Mini 20 Maxi 999 nEt Cleaning On OFF Scheduling OFF mandatory cleaning is disabled Any change in the value leads to mandatory cleaning at the programming output The cleaning counter is independent for each group ...

Page 28: ...ases in steps of 1 Decreases in steps of 1 Increases in steps of 1 Increases in steps of 1 Temperature display in degrees Celsius Mini 60 C Maxi 100 C tct Cup warmer On OFF Pri Pri On OFF Press 3s Press 1s Pri Pre infusion Display in seconds Mini 0s Maxi 2 5s 1 5 Decreases in steps of 1 Increases in steps of 1 ...

Page 29: ...reases in steps of 0 5 Increases in steps of 0 5 doS Dosamat OFF CC cc cC 1t 2t ctS OFF On Continu stop Press 1s Press 1s rin Rinçage Barista 3 Decreases in steps of 1 Increases in steps of 1 Display in seconds Mini 0s Maxi 4s doE Water dosing ...

Page 30: ...30 StA inF OFF OFF On r_S E_E d_c c d Steamair Coins payment Press 1s Press 1s Press 1s dtY Dirty 0 Decreases in steps of 1 Increases in steps of 1 Mini 0 Maxi 2 ...

Page 31: ... holder 5 Once all the doses have been programmed confirm the programming by pressing 3 seconds on PROGRAMMING THE DIFFERENT VOLUMES OF COFFEE Electronic box Use An impulse on the key and activates the corresponding flow delivery During cycle the display shows the remaining time in seconds To stop before the end of the delivery press again the same key Note a safety stops the flow after 105 second...

Page 32: ...me is correct press again on the key to stop the cycle Repeat the same process for other doses 5 Once all the doses have been programmed confirm the programming by pressing 3 seconds on Copy setting between coffee boxes The programming is independent on the coffee boxes it is possible to copy the dose settings from one box to another using the copy function CPY After the programming doses on group...

Page 33: ...y SteamAir key Automatic mode To reach the programmed T One impulse on the key makes the SteamAir flow until the liquid reaches the preset temperature You can stop it manually by pushing again on the key Manual mode Over the programmed T If after the stop in automatic mode temperature reached you wish to continue the heating you have to press again the key Then you go into manual mode and the outl...

Page 34: ...for a short time to eliminate the mall residue of milk which has been able to remain in the tube Remove the tip of the steam pipe for easier cleaning Daily Before use or after several hours of inactivity Drain by each unit and water outlet 0 5 litre of water by each steam outlet of the steam for 1 minute BEFORE PREPARING A DRINK After the service Take the 2 cup filter holder cup Place the rubber p...

Page 35: ...Press the cleaning touch it turns blinking blue Put a detergent pellet above the rubber plug ref DO197 then insert and tighten the filter holder in the unit Press the key continu stop to lunch the cleaning cycle 2s ON 8s OFF x 10 sequences Display nP cleaning When the display shows rP take off the filter holder from the unit and wait the end of the rinsing cycle 3x 30 seconds At the stop of the au...

Page 36: ... an adequate cleaning product 3 When the cleaning is done press during 1 5 s on the key blinking to return to standby of the machine 2nd process 1 Turn OFF the machine by main switch position 0 2 Clean the keyboards and the front panel with a smooth towel and an adequate cleaning product 3 When the cleaning is done turn ON the main switch position 2 NEVER CLEAN KEYBOARDS WITH LIQUID WHEN THE MACHI...

Page 37: ...5 n 78 n 141 n 204 n 49 n 112 n 175 n 238 n 16 n 79 n 142 n 205 n 50 n 113 n 176 n 239 n 17 n 80 n 143 n 206 n 51 n 114 n 177 n 240 n 18 n 81 n 144 n 207 n 52 n 115 n 178 n 241 n 19 n 82 n 145 n 208 n 53 n 116 n 179 n 242 n 20 n 83 n 146 n 209 n 54 n 117 n 180 n 243 n 21 n 84 n 147 n 210 n 55 n 118 n 181 n 244 n 22 n 85 n 148 n 211 n 56 n 119 n 182 n 245 n 23 n 86 n 149 n 212 n 57 n 120 n 183 n 24...

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