CONTENTS Introduction Warnings............................3 Description – Operating Principles....................5 Operating principle following the electric diagram................6 Specifications Diagrams of connections and dimensions..................9 Consumptions, weights, packaged dimensions and volume............10 Technical Data ..........................11 Production Figures ........................12 Reception of the machine Packaging - Housing –...
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.
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.
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).
OPERATING PRINCIPLE FOLLOWING THE ELECTRIC DIAGRAM (TIMER ON DEFROST - MICROSWITCHES DEPRESSED). - The ITV model NG has two switches: In the frontal side of the machine (with led). This turns the machine on or off when we press it. The second switch is located in the electrical panel.
- 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.
NG MDP 150 MODEL CONSUMP. CONSUMP. CONSUMP. DIMENSIONS DIMENSIONS GROSS VOLUME WATER TOTAL WATER WEIGHT MACHINE PACKAGING WEIGHT COND.. WATER L/HOUR (1) PROD. L/HOUR (1) L/HOUR (1) (KG) X*Y*Z (KG) 350x474x592 420x540x725 0.20 NDP 20 A NDP 20 W 23.1 350x474x592 420x540x725 0.20...
MODEL REFRIGER. HIGH PRESSURE TOTAL FUSE POWER POWER INTENST. CHARGE PRESSURE SECURITY COMPRESSOR AMPS (TO INSTALL) MIN. MAX. AVERAGE (GR) NDP 20 A NDP 20 W NG 30 A NG 30 W NG 35 A NG 35 W NG 45 A NG 45 W 15´5 bar 18 bar...
PRODUCTION CHARTS (Kg/Day) NDP20 Tw/Tr NG 30 Tw/Tr 39,6...
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.
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.
- The Line to base of plug must have a minimum section of 2.5 mm - 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.
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.
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.
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.
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.
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.
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 POSSIBLE CAUSES SOLUTION 1) None of the electrics work. A) The machine is not plugged in. A) Plug the machine. B) The line fuse has blown. B) Replace fuse. current line is wrongly C) Check connections. connected in the junction box. D) The cut off micro-switch is faulty or D) Check, adjust or change.
5) Ice cubes form correctly but A) Faulty hot gas valve or wrongly A) Verify and change if necessary. do not unstick. connected. B) Low water pressure. B) Increase water pressure if possible. (This often done removing flowmeter on faucet). C) Fan pressostat or condensation C) Adjust or replace.