ICE CUBES MAKERS Range SPRAY Technology
CONTENTS Introduction Warnings........................................................................................................................................3 Description – Operating Principles....................................................... ..........................................5 Operating principle following the electric diagram........................................................ ..................6 Specifications Diagrams of connections and dimensions..............................
INTRODUCTION Thank you for choosing ITV's NG DP Ice Cube Maker. You have purchased one of the most reliable ice-making products on the market today. Carefully read the instructions contained in this manual since they provide important information relative to safety during installation, use, and maintenance. WARNINGS - This appliance should be installed by approved Technical Service Personnel. - This plug should be accessible at all times.
IMPORTANT: - Do not attempt to service this machine yourself. Improper use by other than specially trained technicians is extremely dangerous and may cause severe damage to the unit. In case of breakdown contact an authorised distributor. We strongly recommend using only original replacement parts. - Waste and other material should be disposed in accordance to local regulations and procedures for waste disposal.
DESCRIPTION Main features: − Stainless steel body AISI 304 and chapa galvanizada. − Anti-blocking spray nozzles. − Pump without seals. − High pressure safety pressostats even in air-cooled machine. − Large condensers (work well at high ambient temperatures; and reduce cooling water consumption in water-cooled machines). − TRANSPARENT CUBES with most of the water mains.
OPERATING PRINCIPLE FOLLOWING THE ELECTRIC DIAGRAM (TIMER ON DEFROST - MICROSWITCHES DEPRESSED). - The ITV model NG has two switches: 1st In the frontal side of the machine (with led). This turns the machine on or off when we press it. 2nd The second switch is located in the electrical panel. This one stops the condensing unit, but keeps the hydraulic part in operation and allows to do the cleaning of the machine (except in NDP20 model).
- Air-cooled machines have a fan (R) which is controlled by the pressostat (F). - In water-cooled models without pressostatic valve, pressostat (J) opens and closes the condenser electrovalve (K). - Evaporator temperature decreases until the cycle thermostat (T2) set point is reached, at this temperature circuit 1-2 will be closed and timer motor (G) will switch on.
SPECIFICATIONS Models: NDP 20 NG DP 30 - 150.
NG MDP 150 625 805 775 MODEL CONSUMP. CONSUMP. CONSUMP. NET DIMENSIONS DIMENSIONS GROSS WATER COND.. WATER TOTAL WATER WEIGHT MACHINE PACKAGING WEIGHT L/HOUR (1) PROD. L/HOUR (1) X*Y*Z (KG) (M ) 0.20 0.20 L/HOUR (1) NDP 20 A NDP 20 W 18 NG 30 A NG 30W 20 NG 35 A NG 35 W 20 NG DP 45 A NG DP 45 W 24 NG DP 60 A NG DP 60 W 30 NG DP 80 A NG DP 80 W 54 NG DP 110 A NG DP 110 W 59 NG DP 150 A NG DP 150 W 62 NG MDP 150 A NG MDP 150 W 62 (KG) 5.1 5.1 14 5.1 23.
REFRIGER. MODEL HIGH PRESSURE CHARGE LOW PRESSURE TOTAL INTENST. AMPS FUSE POWER SECURITY COMPRESSOR POWER ABS (TO INSTALL) MIN. NDP 20 A NDP 20 W NG 30 A NG 30 W NG 35 A NG 35 W NG 45 A NG 45 W NG DP 60 A NG DP 60 W NG DP 80 A NG DP 80 W NG 110 A NG 110 W NG 150 A NG 150 W MDP 150 A MDP 150 W MAX. AVERAGE -2 (GR) (A) 345 285 320 300 360 310 420 365 420 2 2 2 2 2 2 3 3 3.
PRODUCTION CHARTS (Kg/Day) NDP20 Tw/Tr 45 40 35 30 25 20 15 10 35 8 10 13 14 16 17 17 17 30 12 15 17 19 20 21 21 21 25 15 18 20 22 24 24 25 25 20 19 21 24 25 27 28 28 28 15 22 24 27 28 30 20 31 31 10 24 27 29 31 32 33 33 33 5 26 29 31 33 34 35 35 35 NG 30 Tw/Tr 45 40 35 30 25 20 15 10 35 12 16 19 22 24 25 26 26 30 18 22 25 28 30 31 32 32 25 23 28 31 34 36 37 38 37 20 28 32 36 38 40 42 42 42
NG 35 Tw/Tr 45 40 35 30 25 20 15 10 35 14 19 22 26 28 29 30 30 30 21 26 30 33 35 37 37 37 25 27 32 36 39 42 43 44 44 20 33 38 42 45 47 49 50 50 15 38 43 47 50 52 35 55 54 10 42 47 51 54 56 58 59 59 5 46 51 54 58 60 61 62 62 Tw/Tr 45 40 35 30 25 20 15 10 35 18,3 24,4 29,5 33,5 36,5 38,5 39,4 39,4 30 27,5 33,6 38,7 42,8 45,8 47,7 48,7 48,6 25 35,8 41,9 47 51,1 54,1 56 57 56,9 20 43,2 49,3 54,3 58,4
NG 60 Tw/Tr 45 40 35 30 25 20 15 10 35 24,4 32,5 39,3 44,7 48,7 51,3 52,6 52,5 30 36,7 44,9 51,6 57 61 63,7 64,9 64,8 25 47,8 55,9 62,7 68,1 72,1 74,7 76 75,9 20 57,6 65,7 72,5 77,8 81,9 84,5 85,8 85,6 15 66,1 74,2 81 86,4 90,4 60 94,3 94,2 10 73,3 81,4 88,2 93,6 97,6 100,2 101,5 101,4 5 79,2 87,4 94,1 99,5 103,5 106,2 107,4 107,3 Tw/Tr 45 40 35 30 25 35 32 43 52 59 30 49 59 68 76 25 63 74 83 20 76 87 15 88 10 5
NG 110 Tw/Tr 45 40 35 30 25 20 15 10 35 44 59 72 81 89 94 96 96 30 67 82 94 104 111 116 119 118 25 87 102 114 124 132 137 139 139 20 105 120 132 142 150 154 157 157 15 121 136 148 158 165 110 172 172 10 134 149 161 171 178 183 186 185 5 145 160 172 182 189 194 197 196 Tw/Tr 45 40 35 30 25 20 15 10 35 61 81 98 111 121 128 131 131 30 91 112 129 142 152 156 162 162 25 119 139 156 170 180 186 190 189 20
DELIVERY & UNPACKING Upon receipt, thoroughly inspect the packing container. If there appears to be damage to the container contact the shipper immediately. Unpack the unit in presence of the forwarder noting any damage on the delivery note or CMR or in an additional document. ITV packing bears the “Green Point” on all models since January 1st 1998 according to the European Directives on management of Packaging and Waste Disposal.ITV. Be sure to include model name and serial number on all claims.
BOXES, ETC.) IN REACH OF CHILDREN.
INSTALLATION Required conditions for placement of unit IMPORTANT: The NG machines are intended to work at room temperature between 5ºC and 43ºC and with water temperature between 5ºC and 35ºC. Difficulties during harvest cycle can appear below these minimum temperatures. Above the maximum temperatures the life of the compressor becomes shorter and the production decreases considerably.
b) WATER WITH MORE THAN 1000 PPM: Ice will be less hard and tend to adhere. Cubes with white spots may appear. Lime deposits may impede proper functioning. In water cooled models, condenser obstruction is likely. Installation of a high quality water softener is recommended. Lime deposits can be avoided with the installation of our polyphosphates filter. (Part # ITV 7500). c) CHLORINATED WATER: Chlorine taste can be avoided by installing a carbon filter (Part # ITV 7509).
- The Line to base of plug must have a minimum section of 2.5 mm2. - Be sure voltage indicated on rating plate corresponds to that of mains supply. IMPORTANT! Supply socket must be properly earthed. Be sure to check standard for country were appliance is going to be installed.
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 machine into electricity mains supply. 3) Switch on the machine (the switch is in the front of the machine). 4) Ensure that there are no strange vibrations or scraping sounds. 5) Check that the water curtain moves freely. 6) Verify that the nozzles send water to the evaporator in the correct direction (uniform fans).
ADJUSTMENTS Condenser water valve pressostat - This pressostat controls high pressure by opening and closing the condenser water valve. Differential is a fixed 1 Bar (14 psi.). - The valve closes at 15 Bar (214 psi), which is equivalent to a condensation water exit temperature of 38ºC. . 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.
Safety Pressostat This safety device trips when discharge pressure is too high. Pressure 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 o temperature is too high in water cooled models. HIGH PRESSURE REGULATION (fixed): 3030-22 Bar (from model 110 part # 2683) 27-21 Bar (380-296 psi.
MAINTENANCE AND CLEANING INSTRUCTIONS IMPORTANT: Maintenance and cleaning procedures as well as problems derived from failing to carry them out are not covered by the warranty. Proper maintenance is essential to obtain favourable ice quality and optimum functioning of unit. - Frequency depends on water quality and characteristics of room where unit is installed. IMPORTANT: Maintenance/cleaning procedures should take place at least once every six months.
MAINTENANCE AND CLEANING PROCEDURES ** WARNING: Unit should always be disconnected during maintenance/cleaning procedures. Water Condenser 1) Disconnect machine. 2) Close water faucet. 3) Disconnect water entry/exit from condenser. 4) Prepare a solution of 50% phosphoric acid in distilled water. 5) Distribute solution through condenser. (Solution is more effective at 35°-40°C). WARNING! DO NOT USE HYDROCHLORIC ACID Air Condenser 1) Disconnect machine. 2) Close water faucet.
NOW STARS THE SANITARY CLEANING 9) Connect the machine once it has finished entering water, remove the evaporator cover and pour lye (one glass). Wait for 20 minutes. 10) Put the timer foward up to defrosting position. Once the ice has fallen, THROW AWAY THIS ICE and let the machine produce another complete cycle. IMPORTANT: ** Discard ice produced during this procedure. 11) Clean and assemble all the components. Verify that the grill is cleaned and that cubes slide properly.
6) Assemble the filter, nozzles and connecting tube. ATTENTION: IT IS ESSENTIAL THAT SPRAY 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.
TROUBLESHOOTING PROBLEM 1) None of the electrics work. POSSIBLE CAUSES A) The machine is not plugged in. B) The line fuse has blown. C) The current line is wrongly connected in the junction box. D) The cut off micro-switch is faulty or wrongly adjusted. E) Safety pressostat faulty. 2) All the electrics work except A) Check switch installed in compressor. electrical panel. B) Faulty relay . C) Faulty “Klixon”. D) Faulty compressor. 3) All the electrics work but the A) Voltage too low.
5) Ice cubes form correctly but A) Faulty hot gas valve or wrongly A) Verify and change if necessary. connected. do not unstick. B) Low water pressure. B) Increase water pressure if possible. (This can often be done by removing flowmeter on faucet). C) Fan pressostat or condensation C) Adjust or replace. pressostat too low or faulty. D) Faulty condensation water inlet D) Check and replace. valve (water cooled machines without pressostatic) E) Faulty water pressostatic valve or E) Adjust, repair or replace.
