ITV ICE MAKERS NG 120 Technical Manual Download Page 17 | Manualshive

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17

4.1. CONTROL BOARD

PCB connections

Outputs
C

Compressor

B

Water pump

EA

Water inlet valve

GC

Hot gas valve.

Inputs
SC

Evaporator temperature NTC probe

P

Safety pressure switch

N

PCB push button

T1

Stock thermostat

LED signalling

Next to each out relay there is an orange led. Signals relay on

Next to each input terminal there is an orange led marking input active.

There are four additional red leds that signals machine status (continuous) or alarm (flashing)

Status signaling . Continuous led

LE1 LE2 LE3 LE4

Start up delay

X

Ice cycle T>Tc

X

X

Ice cycle T<Tc

X

Harvest t<tg

X

X

Harvest t>tg

X

Full bin

X

Alarm signaling . Flashing led

LE1 LE2 LE3 LE4

Safety pressure switch

X

Ice cycle timeout

X

Harvest cycle timeout

X

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Summary of Contents for NG 120

Page 1: ...ERIES ICE CUBE MAKERS MODELS NG 30 NG 35 NG 45 NG 60 NG 80 NG 120 CAREFULLY READ THE INSTRUCTIONS CONTAINED IN THIS MANUAL SINCE THEY PROVIDE IMPORTANT INFORMATION RELATIVE TO SAFETY DURING INSTALLATION USE AND MAINTENANCE ...

Page 2: ...EQUENCE OF OPERATION 15 4 1 Control Board 17 4 2 Alarms 18 4 2 1 Safety high pressure switch 19 4 2 2 Long harvest 19 4 2 3 Ice production cycle timeout 19 4 2 4 Faulty temperature probe 19 4 3 PCB push button function 19 4 4 DRAIN FORCE 20 4 4 1 SEQUENCE OF OPERATION 20 4 4 2 CONTROL BOARD 22 5 Refrigeration diagram 23 6 MAINTENANCE AND CLEANING PROCEDURES 24 6 1 Cleaning water distribution syste...

Page 3: ...3 7 USER TROUBLESHOOTING GUIDE 31 7 1 general questions 31 7 2 drain force 32 8 TECHNICAL DATA 33 ...

Page 4: ...the appliance Always disconnect the power supply from the machine before any cleaning or maintenance service Any change needed on the electrical installation for the appropriate connection of the machine should be exclusively performed by qualified and certified professional personnel only Any use by the ice maker not intended to produce ice using potable water is considered inappropriate It is ex...

Page 5: ... because of the use of flammable refrigerant For compression type appliances that use flammable refrigerants should additionally consider the substance of the warnings listed below Keep ventilation openings in the appliance enclosure or in the built in structure clear of obstruction Do not use mechanical devices or other means to accelerate the defrosting process other than those recommended by th...

Page 6: ...ke the corresponding claim to the carrier To confirm the existence of damages unpack the machine in the presence of the carrier and state any damage on the equipment on the reception document or freight document Always state the machine number and model This number is printed on three locations 1 Packing On the outside it contains a label with the serial number 2 Exterior of the unit On the back p...

Page 7: ...2 mm drain hose 1 filter User manual Warranty and serial number CAUTION All packing elements plastic bags carton boxes and wood pallets should be kept outside the reach of children as they are a source of potential hazard ...

Page 8: ... the left front side In addition the unit is equipped with a rear air vent Do not obstruct the front grille with any objects The unit can operate embedded but with a reduction in output In case the front louver is not enough the exit is either total or partially obstructed or due to its placement it will receive hot air from another device we recommend in case it is not possible to change the loca...

Page 9: ...to the bottom of the ice machine as far as possible Move the machine into its final position Use a level on top of the ice machine Adjust each leg as necessary to level the ice machine from front to back and side to side 2 4 MINIMUM DISTANCE TO OBSTACLES Please see below the recommended minimum distances for proper operation and efficient service ...

Page 10: ...rear of the ice machine 2 5 WATER SUPPLY CONNECTION The quality of the water supplied to the ice machine will have an impact on the time between cleanings and ultimately on the life of the product mainly in water cooled units It also will have a remarkable influence on the appearance hardness and flavor of the ice ...

Page 11: ...m the water valve to the ice machine needs to be nominal ID tubing ATTENTION The machine shall be plumbed with adequate backflow protection according to applicable Federal State and local regulations 2 6 DRAIN CONNECTION 2 6 1 GRAVITY DRAIN Drainage should be located lower to the machine level at 150mm minimum It is convenient that the drain hose is 1 18 30mm inside diameter and with a minimum gra...

Page 12: ...er sales service Such replacement should be performed by qualified technical service only The machine should be places in such a way as to allow a minimum space between the back and the wall to allow an easy access and without risks to the cable plug Safeguard the socket It is convenient to install adequate switches and fuses ATTENTION The appliance requires an independent power supply of proper c...

Page 13: ...bar MAXIMUM 0 6 MPa 6 bar In case inlet water pressure is higher than 0 6 MPa install a pressure regulator 3 2 START UP Once the installation instructions are followed ventilation site conditions temperatures water quality etc proceed as follows 1 Open the water inlet Verify the no existence of leakages 2 Open the door and remove the protection elements on the shield 3 Verify that the curtain move...

Page 14: ...els 8 Verify the ice cubs with the pictures below If necessary adjust production time switches see table in 4 1 switches 1 4 tf to make the ice cubes with the right shape Damages due to the lack of maintenance and cleaning operations are not included on the warranty Too big Just right Too small ...

Page 15: ...es 2 distributor which provides a fan of water that waters each ice cube row in the evaporator 1 in which the water starts freezing and making the ice When the temperature probe 3 at the end of the evaporator reaches an adjusted value Tc 12 8 C the fabrication continues the fixed time with the combination of dip switches 1 4 see table This way we can ensure the filling of the ICE CUBE is correct i...

Page 16: ...machine comes back to the production cycle At the beginning of each Harvest cycle the PCB checks if the Thermostat is open or close Once the ice bin is full and the ice cubes cover the thermostat tube 4 the contact open so when the harvest begins the machine will stop until the contact of the thermostat close again When it close it starts with a harvest cycle and then it will continue with the pro...

Page 17: ...re is an orange led Signals relay on Next to each input terminal there is an orange led marking input active There are four additional red leds that signals machine status continuous or alarm flashing Status signaling Continuous led LE1 LE2 LE3 LE4 Start up delay X Ice cycle T Tc X X Ice cycle T Tc X Harvest t tg X X Harvest t tg X Full bin X Alarm signaling Flashing led LE1 LE2 LE3 LE4 Safety pre...

Page 18: ...sw2 4 Software selection Always ON ICE WATER TIMER SETTING SW1 TF MIN SW1 TW SEG 1 2 3 4 5 6 7 OFF OFF OFF OFF 6 OFF OFF OFF 40 ON OFF OFF OFF 8 ON OFF OFF 60 OFF ON OFF OFF 10 OFF ON OFF 80 ON ON OFF OFF 12 ON ON OFF 100 OFF OFF ON OFF 14 OFF OFF ON 120 ON OFF ON OFF 16 ON OFF ON 140 OFF ON ON OFF 18 OFF ON ON 160 ON ON ON OFF 20 ON ON ON 180 OFF OFF OFF ON 22 ON OFF OFF ON 24 OFF ON OFF ON 26 ON...

Page 19: ...ion where it was Signalling Flashing LE1 4 2 2 LONG HARVEST If the harvest time is longer than 5 min the harvest is interrupted switching over to the production cycle If the same happens again at the next harvest the machine will stop Signalling Flashing in LE3 4 2 3 ICE PRODUCTION CYCLE TIMEOUT If during the production cycle evaporator temperature probe has not reached the set temperature Tc in m...

Page 20: ...nds the water electrovalve opens and fills the water tray 2 to renovate the water The excess of water goes out by the overflow 3 to the drain force water reservoir 4 When the water reservoir is full of water covering the 2 electrodes 5 the pump 6 turns on and evacuates water for 5 seconds After 5 seconds the pump turns off if the electrodes are not covered by the water otherwise the pump will star...

Page 21: ...ide the water reservoir in a manual way There is a plug 9 in one of the plastic tube by retiring this plug it is possible to evacuate all the water Also the system has a Check valve 10 that does not allow the water to came back to the water reservoir ...

Page 22: ...L BOARD PCB connections Outputs B Water pump Inputs Lw Water Level Sensor LED signalling There are two LEDs that signals machine status Status signaling Continuous led LED5 LED6 PUMP RUNNING X WATER LEVEL SENSOR ON X ...

Page 23: ...23 5 Refrigeration diagram ...

Page 24: ...ix Ice Machine Cleaner and Sanitizer solutions together WARNING Wear rubber gloves and safety goggles when handling Ice Machine Cleaner or Sanitizer WARNING Unit should always be disconnected during maintenance cleaning procedures 6 1 CLEANING WATER DISTRIBUTION SYSTEM a Set the switch to the OFF position after ice falls from the evaporator at the end of a harvest cycle or set the switch to the OF...

Page 25: ...r spill e Prepare a solution of an appropriate product for the cleaning of ice machines lime Do not use hydrochloric acid We recommend the use of any approved scale removal product prepared according to the manufacturer s instructions as for example Scale Kleen f Fill water tray with the solution Pipe for drain ...

Page 26: ... the auxiliary pipe to drain and purge out the ice machine scale remover and residue Replace it j Remove the water overflow 1 and empty the water tray 2 Return it to their original position to avoid water spill k Mix enough cleaning solution as in point e to clean parts and interior food zone surfaces l Clean all surfaces of the shield 3 with the cleaner solution using a brush not a wire ...

Page 27: ...ve the auxiliary pipe to drain and purge out the sanitizer solution and residue Replace it t Remove the water overflow 1 and empty the water tray 2 Return it to their original position to avoid water spill u Fill the water reservoir with water and switch on the machine to allow water to circulate for 5 minutes and then stop the machine Repeat this operation two more times to rinse thoroughly v Rem...

Page 28: ...HOUT WATER 6 3 CLEANING THE BINS 1 Disconnect the machine close water faucet and empty storage bin of ice 2 Use the cleaner water solution to clean all surfaces of the bin Use a nylon brush or cloth Then rinse all areas thoroughly with clean water 3 Use the sanitizer water solution to sanitize all surfaces of the bin Use a nylon brush or cloth 4 Rinse with plenty of water dry run the machine and o...

Page 29: ...ONDENSER The water condenser may require cleaning due to scale build up The cleaning procedures require special pumps and cleaning solutions They must be performed by qualified maintenance or service personnel 6 5 EXTERNAL CLEANING OF THE MACHINE Clean the area around the ice machine as often as necessary to maintain cleanliness Sponge any dust and dirt off the outside of the ice machine with mild...

Page 30: ...0 minutes Inyectors cleaning 30 minutes Fabrication head filter cleaning 30 minutes Water circuit cleaning 45 minutes Sanitary cleaning 30 minutes Water filter cleaning replacement 30 minutes General unit cleaning Depending on room characteristics Depending on water quality Carried out by owner Essential Maintenance and cleaning procedures as well as problems derived from failing to carry them out...

Page 31: ...eck supply and water valve operation Faulty pump Check replace Overflow pipe out of place or leaking Check tube and o ring Too large cubes Freezing time too large Adjust by dip switches Probe makes bad contact Position well Too small cubes Uniform Freezing time too short Adjust by dip switches Low refrigeration performance Check refrigeration system Not Uniform Poor refrigerator performance Not al...

Page 32: ...ocked Clean or Replace it The pump is broken Replace it The electrodes do not detect water Disassemble and clean if problem persist replace it The pump is always turn on The electrodes detect water even if there is no water Disassemble and clean the electrodes ...

Page 33: ...AL DATA OTHER TECHNICAL INFORMATION For more technical information scan the following QR code or click the link Specification sheets User manual Exploded views CAD REVIT drawings Technical videos https n9 cl 5m2cj ...

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