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NG DP

TECHNICAL SERVICE MANUAL

15

3. DELIVERY AND UNPACKING

Upon receipt, thoroughly inspect the packing container. If there appears to be damage to the

container contact the shipper immediately. Unpack unit in the presence of delivery personnel

noting any damage on the waybill.

ITV packing bears the

“Green Point” on all models according to the European Directives on

management of Packaging and Waste Disposal.

Be sure to include model name and serial number on all claims. Serial number is located in the

following three places:

(1)

Packing

There is a label stuck onto the cardboard packing bearing this
serial number (1).

(2)

Machine body

On the back of the machine (1).

(3)

Rating plate and serial number

Located at the back of the machine.

Water cooled machines: check that the drainage hose at the back of the machine is in good

condition.

Verify that the installation kit is inside the bin, and has the following pieces: scoop,

3/4’ water

hose, two small filters and user manual.

In all models there is a large particle filter (5 micres) with accessories, and an ice dispersion

cone.

WARNING: DO NOT LEAVE PACKING

MATERIALS (PLASTIC BAGS, CARDBOARD BOXES, ETC.) WITHIN REACH OF

CHILDREN.

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Содержание ALFA

Страница 1: ...DP 30 NG DP 35 NG DP 45 NG DP 60 NG DP 80 NG DP 110 NG DP 150 NG MDP 150 MODULAR CAREFULLY READ THE INSTRUCTIONS CONTAINED IN THIS MANUAL SINCE THEY PROVIDE IMPORTANT INFORMATION RELATIVE TO SAFETY DURING INSTALLATION USE AND MAINTENANCE THIS APPLIANCE SHOULD BE INSTALLED BY APPROVED TECHNICAL SERVICE PERSONNEL ...

Страница 2: ...Preliminary Checks 18 5 2 Starting up 18 6 ADJUSTMENTS 19 6 1 Condenser water valve pressostat 19 6 2 Fan pressostat air cooled models 19 7 MAINTENANCE AND CLEANING INSTRUCTIONS 21 8 MAINTENANCE AND CLEANING PROCEDURES 22 8 1 Water condenser 22 8 2 Air condenser 22 8 3 Evaporator Water Through 22 8 4 Cleaning the ice bin 23 8 5 Cleaning the outside of the machine 23 8 6 Spray nozzles and connectin...

Страница 3: ... Improper use by other than specially trained technicians is extremely dangerous and may result in a fire or electric shock This machine should not be placed outdoors or exposed to rain Connect to drinking water mains This appliance is not intended for use by young children or infirm persons without supervision Young children should be supervised to ensure that they do not play with the appliance ...

Страница 4: ...AGE To do so turn the wheels on the timer until the microswitches are depressed At this moment the compressor is working the water inlet valve and hot gas inlet valve are both open The water bin fills with water any excess is lost via the maximum level overflow After a period of time controlled by the timer the hot gas valve and water inlet valve are closed The pump then sends water to the evapora...

Страница 5: ...llows to do the cleaning of the machine except in NDP20 model Current reaches the machine via the line connecting the blue 1 and brown 2 terminals The brown wire connects the compressor and timer motor The blue wire connects bin thermostat T1 which closes the circuit with 2 A different blue wire goes to 2 on terminal G1 which at this moment is connecting 1 and 4 A red wire connects bin thermostat ...

Страница 6: ...ce the cycle is over the pins on the timer wheels will force the micros to change circuits stopping the pump and opening the hot gas valve and water valve The combined effect of hot gas and water sprayed on the top of the evaporator will release the ice cubes and change the position of the cycle thermostat T2 The ice production and defrosting cycle will continue until the ice storage bin is full a...

Страница 7: ...NG DP TECHNICAL SERVICE MANUAL 1 4 Wiring diagrams 7 ...

Страница 8: ...NG DP TECHNICAL SERVICE MANUAL 2 SPECIFICATIONS NDP 20 NG DP 30 150 8 ...

Страница 9: ...95x795 525x645x920 50 NG DP 45 A 18 8 18 8 45 465x595x795 525x645x920 53 NG DP 45 W 24 18 8 42 8 45 465x595x795 525x645x920 53 NG DP 60 A 28 8 28 8 48 535x595x795 595x645x920 67 0 40 NG DP 60 W 30 28 8 58 8 48 535x595x795 595x645x920 67 0 40 NG DP 80 A 14 6 10 6 58 715x595x945 780x670x1055 78 0 57 NG DP 80 W 54 14 6 68 6 58 715x595x945 780x670x1055 78 0 57 NG DP 110 A 17 2 17 2 89 715x700x1050 780...

Страница 10: ... bar 18 bar 3 7 3 8 590 NG DP 60 W 3 2 3 8 460 NG DP 80 A 3 6 1 2 800 NG DP 80 W 3 1 2 800 NG 110 A 5 7 8 950 NG 110 W 5 7 8 950 NG 150 A 6 1 3 8 1200 NG 150 W 6 1 3 8 1200 MDP 150 A 6 1 3 8 1200 MDP 150 W 6 1 3 8 1200 1 Data obtained at room temperature 20 C water introduced at 15 C water quality 500ppm 2 Maximum consumption obtained at room temperature 43 C according to UNE climate classificatio...

Страница 11: ...12 13 14 15 16 16 16 20 12 14 15 16 17 18 18 18 15 14 16 17 18 19 20 20 20 10 16 17 19 20 21 21 21 21 5 17 18 20 21 22 22 23 23 NG 30 Tw Ta 45 40 35 30 25 20 15 10 35 8 10 12 14 15 16 17 17 30 11 14 16 18 19 20 21 21 25 15 18 20 22 23 24 24 24 20 18 21 23 25 26 27 27 27 15 21 23 26 27 29 30 30 30 10 23 26 28 30 31 32 32 32 5 25 28 30 32 33 34 34 34 ...

Страница 12: ...7 28 28 28 20 21 24 27 29 30 31 32 32 15 24 27 30 32 34 35 35 35 10 27 30 33 35 36 37 38 38 5 29 32 35 37 39 40 40 40 NG 45 Tw Ta 45 40 35 30 25 20 15 10 35 11 15 19 21 23 24 25 25 30 17 21 25 27 29 30 31 31 25 23 27 30 32 34 36 36 37 20 27 31 35 37 39 40 41 41 15 32 35 39 41 43 45 45 45 10 35 39 42 45 47 48 49 49 5 38 42 45 48 50 51 52 52 ...

Страница 13: ...6 48 49 79 20 37 42 46 50 52 54 55 55 15 42 47 52 55 58 60 60 60 10 47 52 56 60 63 64 65 65 5 51 56 60 64 66 68 69 69 NG 80 Tw Ta 45 40 35 30 25 20 15 10 35 21 28 33 38 41 44 45 45 30 31 38 44 49 52 54 55 55 25 41 48 53 58 62 64 65 65 20 49 56 62 67 70 72 73 73 15 56 63 69 74 77 80 81 81 10 63 70 75 80 83 86 87 87 5 68 75 81 85 89 91 92 92 ...

Страница 14: ...9 101 101 15 78 87 95 102 106 110 111 111 10 86 96 104 110 115 118 120 119 5 93 103 111 117 122 125 127 126 NG 150 Tw Ta 45 40 35 30 25 20 15 10 35 39 52 63 72 78 82 84 84 30 59 72 83 92 98 102 104 104 25 77 90 101 109 116 120 122 122 20 92 106 116 125 132 136 138 138 15 106 119 130 139 145 150 152 151 10 118 131 142 150 157 161 163 163 5 127 140 151 160 167 171 173 173 ...

Страница 15: ...umber is located in the following three places 1 Packing There is a label stuck onto the cardboard packing bearing this serial number 1 2 Machine body On the back of the machine 1 3 Rating plate and serial number Located at the back of the machine Water cooled machines check that the drainage hose at the back of the machine is in good condition Verify that the installation kit is inside the bin an...

Страница 16: ...of the compressor becomes shorter and the production decreases considerably IMPORTANT The new box type frame in NG models allows a better ventilation in the air cooled machines due to the fact that the condensers are placed in oblique position in the front part of the machine The machines will work properly even if they are located in places with little ventilation at the rear and lateral sides Th...

Страница 17: ...er diameter of 30mm and a minimum gradient of 3 cm per metre 3 4 3 Electrical connection The Unit is provided with a 1 5 m cord and schucko socket If the cord is damaged shoud be replaced by a cord or special assembly supplied by the manufacturer or after sales service It is strongly recommended to leave a minimum space between the rear side and the wall in order to have an easy access to the plug...

Страница 18: ...er pressure adequate MAXIMUM 0 7 bar MINIMUM 6 bar NOTE To install a pressure reducer If water inlet pressure is more than 6 bar ATENTION Check that voltage and mains frequency is the same as in the rating plate 5 2 Starting up Having followed the installation instructions ventilation temperature room conditions water quality etc proceed as follows 1 Open water faucet Check for leaks 2 Plug machin...

Страница 19: ...hich is equivalent to a condensation water exit temperature of 38ºC 100ºF Below this pressure it will be difficult to unstick the cubes during the defrosting cycle Above this pressure compressor life and ice production are both reduced Pressure can be increased by turning the small screw on the pressure switch clockwise A full turn is equivalent to about 1 5 Bar 6 2 Fan pressure switch air cooled ...

Страница 20: ...ssure might exceed the limit when a Air circulation is not sufficient room temperature is too high or condenser is dirty air cooled models b There is not enough water in the system or water temperature too high in water cooled models HIGH PRESSURE REGULATION fixed 3030 22 Bar from model 110 part 2683 27 21 Bar 380 296 psi ...

Страница 21: ... on a monthly basis MAINTENANCE TABLE ACTION MONTHLY BIMONTHLY SEMIANNUAL ANNUAL BIENNIAL TIME Air condenser cleaning 30 minutes Water condenser cleaning 90 minutes Injectors cleaning 30 minutes Fabrication head filter cleaning 30 minutes Water circuit cleaning 45 minutes Sanitary cleaning 30 minutes Water filter cleaning replacement 30 minutes Stock deposit cleaning General unit cleaning Essentia...

Страница 22: ...machine 2 Close water faucet 3 Clean condenser using a vacuum cleaner soft brush and or low pressure air 8 3 Evaporator Water Through 1 Switch off the electric panel and place the timer in defrosting position 2 Remove the top cover 3 Place the overflow pipe Remove the evaporator cover 4 Prepare a solution of 50 phosphoric acid in distilled water Do not use hydrochlorate acid Pour slowly this solut...

Страница 23: ... ice produced during this procedure 11 Clean and assemble all the components Verify that the grill is cleaned and that cubes slide properly Check that any strip gets blocked in the curtain Check and or change the water inlet filters 12 Check the adjustments of the cycle thermostat cubes more or less filled and that at the end of the cycle the frost is closed to the compressor 13 CHECK THAT THE NOZ...

Страница 24: ...NOZZLES ARE COMPLETELY PERPENDICULAR TO THE CONNECTING TUBES OTHERWISE THE CUBES AT THE ENDS MAY NOT RECEIVE WATER 7 Place the grill over the nozzles with the back slots secure 8 Install the curtain ensuring that all of the strips can move freely 9 Run the machine but DISCARD THE FIRST SET OF ICE CUBES 8 7 Cleaning the water inlet filters These round wire gasket filters placed on either end of the...

Страница 25: ... wash inside of circuit with a suitable solvent pump dry with nitrogen gas REPLACE THE DRIER WITH ONE SUITABLE FOR R 404A which must also have ANTI ACID properties If you need to add oil use one which is specific for R 404A POE If you are in doubt contact the machine manufacturer If there is a leak anywhere in the circuit where R 404A in the GAS phase and a refill of over 10 is required then ALL T...

Страница 26: ... pressure swtich faulty or wrongly adjusted F Replace or adjust pressure switch G Water pressure switch valve faulty or wrongly adjusted G Replace or adjust H Cooling water pressure switch is faulty or badly adjusted H Adjust or change J Non condensable gases in system J Purge system 4 Everything appears to be running correctly but no ice is being made in the evaporator A Unprimed pump A Check ove...

Страница 27: ...ose totally C Replace D Faulty fan or pressure switch faulty inlet cooling water valve D Check fan and re adjust pressure switch t or replace E Refrigerant charge too high or too low E Adjust F Faulty water inlet valve leaks and does not close fully F Check and replace G Inefficient compressor G Replace 7 Ice cube are so large that they stick together and form a plate of ice A Start of cycle therm...

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