Setup: Itv NG-Series Ice Cube Makers User Manual

Content

Overview

The NG-Series Ice Cube Makers are commercial-style ice machines designed to produce cube ice for household-like and light foodservice environments, including kitchens in workplaces, hospitality settings, and catering applications. The series is built for indoor use, potable water supply only, and reliable day-to-day ice production when installed, cleaned, and maintained correctly.

This guide covers the main NG models, including NG 60, NG 80, NG 120, and NG 150, and explains how the machine works, how to install it, how to run it, and how to keep it sanitary and efficient.

Specifications

Models: NG 60, NG 80, NG 120, NG 150.
Operating room temperature: 50°F to 109°F.
Water temperature range: 50°F to 86°F.
Water pressure range: 14.5 psi to 87 psi.
Minimum gravity drain height: 5.9 in below machine level.
Recommended gravity drain hose inside diameter: 1.18 in (30 mm).
Water line size to machine: 1/4 in nominal ID tubing.
Electrical supply: see the nameplate for model-specific voltage and frequency.
Initial start-up delay: 140 seconds.
Long-harvest alarm threshold: 5 minutes.
Ice-production timeout threshold: 60 minutes.
Wash cycle maximum time: 30 minutes.
Drain-force pump cycle: 5 seconds per pump run.

Detailed description

NG-Series Ice Cube Makers use a spray-style freezing process. Water is pumped from the tray to the upper distributor, where it is sprayed through injectors over the evaporator plate. As the refrigerant system cools the evaporator, cube formation begins row by row until the control board decides the freezing stage has reached the proper point.

The main working parts include the compressor, water pump, water inlet valve, hot gas valve, evaporator, temperature probe, bin thermostat, and control board. During production, the pump recirculates water through the distributor and injectors. During harvest, the pump stops, hot gas opens, and water flows to help release the cubes from the evaporator and mold area.

The machine also includes a bin-full detection thermostat. When ice accumulates enough to cover the thermostat tube, the machine pauses until the bin level drops. Models with drain force use a reservoir, electrodes, pump, check valve, and vent tube to automatically evacuate excess water.

Safety

These ice makers are intended for indoor use only and should never be exposed to rain or outdoor weather. Installation should be carried out by qualified service personnel, and any electrical changes should be performed only by certified professionals.

The unit must be grounded, connected to potable water only, and powered by the supplied cord. The socket must remain accessible, and the supply cord must not be trapped or damaged during positioning. Do not place portable outlets or portable power supplies behind the machine.

Disconnect power before cleaning or maintenance. Do not let children play with the appliance, and do not allow use by people who lack the physical, sensory, or mental ability to operate it safely without supervision.

The refrigeration system uses flammable refrigerant, so ventilation openings must stay clear, the refrigerant circuit must not be damaged, and no open flame should be used near a suspected leak. Do not store explosive aerosol cans or similar items in the machine.

Modifying the unit is dangerous and voids warranty coverage. Non-qualified service can also cause malfunction or safety problems.

Setup and operation

Placement and leveling

Place the machine away from ovens, grills, and other heat sources. The front air grille and rear vent must remain unobstructed so the unit can breathe properly. If the machine must be built in and airflow is restricted, output may drop and a water-cooled condenser may be needed.

Set the machine on its leveling legs and adjust them until the cabinet is level from side to side and front to back. Leave enough space at the rear for water, drain, and electrical connections.

Water and drain connections

Water quality affects cleaning frequency, ice appearance, hardness, and taste. If local water conditions require treatment, install filtration or water conditioning as needed. Keep the water feed dedicated to the ice maker, and use adequate backflow protection.

For gravity drain installations, the drain must sit below machine level with proper downward slope. For drain-force systems, the machine can pump water to a higher or farther drain line, but the drain tubing must be arranged correctly so trapped air does not interfere with pumping.

Electrical connection

Use the correct voltage and frequency shown on the nameplate. The machine needs an independent power supply of proper capacity, along with suitable fuses and switches. Excess voltage variation can prevent startup or damage components.

Start-up procedure

Open the water supply and check for leaks.
Open the door and remove internal protection parts from the shield area.
Confirm that the curtain moves freely.
Connect the power supply.
Switch the machine on from the front control.
Check for vibration or rubbing at moving parts.
Close the door on undercounter models or reinstall the front panel on modular models.
Inspect the first cubes and adjust production timing if the cube shape is too large or too small.

Control board and LEDs

The control board manages the compressor, water pump, water inlet valve, and hot gas valve. It also reads the evaporator temperature probe, safety pressure switch, push button, and bin thermostat input.

Status LEDs indicate normal stages such as startup delay, ice production, harvest, and full-bin pause. Flashing LEDs indicate alarms, including a safety pressure switch trip, long harvest, production cycle timeout, or a faulty temperature probe.

Dip-switch functions

Dip switches 1 to 4 set ice production timing.
Dip switches 5 to 7 set water-input timing.
Dip switch 8 selects the evaporator temperature used to start timing.
Dip switch 9 selects the hot-gas temperature setting.
Dip switch 10 selects manual or automatic reset for the high-pressure switch.
Dip switch 11 enables or disables timeout alarms.
Dip switch 12 is always on for software selection.

Special functions

The push button changes function depending on machine state, including switching between production and harvest or ending the startup delay. Holding the button while turning the main switch on activates wash mode, which runs only the water recirculation pump for up to 30 minutes.

Drain-force models use a water-level sensor and pump to evacuate reservoir water automatically. When the reservoir fills and covers the electrodes, the pump runs briefly and repeats as needed until the water level drops.

Cleaning and maintenance

Regular cleaning is essential for sanitary ice and long equipment life. The water system should be cleaned and sanitized at least twice a year, and the bin should be sanitized as often as local health codes require. Disconnect power before any service, and never mix cleaner and sanitizer products.

Water system cleaning

Stop the machine after a harvest or allow the ice to melt off the evaporator. Remove all ice from the bin, drain the tray, and fill it with an approved ice-machine cleaner. Let the cleaner sit, then run the machine in cleaning mode so the solution circulates through the water circuit.

After soaking, drain the cleaner, scrub internal food-zone surfaces, and rinse thoroughly. Then prepare a food-equipment sanitizer solution, circulate it through the system, let it stand, and rinse with several full water cycles before resuming normal operation.

Distributor, injectors, and filters

Remove and clean the curtain, ice-fall grille, collector, nozzles, manifold covers, and the pump suction filter. Reassemble carefully so the injectors sit straight and centered; misalignment can leave some cubes underfed with water.

Bin cleaning

Empty the storage bin, wash all internal surfaces with cleaner and a nylon brush or cloth, rinse thoroughly, then sanitize the bin and rinse again before restarting the machine.

Condenser and exterior cleaning

Air-cooled models need periodic condenser cleaning with a vacuum, soft brush, or low-pressure air. Clean from top to bottom and avoid bending the fins. Water-cooled condensers may require professional cleaning because scale removal is more involved.

Wipe the exterior with mild soap and water, then dry with a soft cloth. Stainless steel cleaner may be used when needed. Also check all water connections, hoses, and fittings for leaks during every maintenance visit.

Maintenance frequency

Air condenser cleaning: monthly or as needed by room conditions.
Water condenser cleaning: periodically, based on water quality and service needs.
Injectors, fabrication head filter, water circuit, and sanitation: at least semiannually.
Water filter cleaning or replacement: based on water quality and operating conditions.
General unit cleaning: carried out regularly by the owner.

Troubleshooting

If the machine has power but will not make ice, first check the plug, socket, and breaker. A full-bin signal with no visible ice can point to a thermostat problem or a control issue.

High-pressure trips usually trace back to a dirty condenser, failed fan, or faulty safety/cooling switch.
An ice-cycle timeout often points to a temperature probe issue, probe contact problem, or refrigeration fault.
A harvest timeout may come from poor water inlet flow or an incorrect dip-switch setting.
White, uneven, or partly formed cubes can result from clogged nozzles, a dirty suction filter, low water flow, or poor refrigeration performance.
Oversized cubes usually mean the freezing time is too long or the probe is not positioned correctly.
Small or poorly released cubes usually mean the freezing time is too short, the harvest timing is too short, or the hot gas valve is not working properly.
Low ice output often comes from restricted condenser airflow, a dirty condenser, a weak refrigeration system, or a hot gas valve that does not close fully.
Compressor cycling or shutdown can be caused by low voltage, airflow blockage, a faulty start component, or a compressor-side electrical problem.

On drain-force models, a flooded bin may indicate a blocked check valve, a failed pump, or water-level electrodes that need cleaning. If the pump runs continuously, the electrodes may be stuck in a wet state and need to be cleaned or replaced.

Warranty

Warranty coverage does not apply to damage caused by poor cleaning or maintenance. Service visits for neglected maintenance, cleaning, travel time, and materials may be billed separately.

Pros & Cons

Pros: Stable cube production, clear control logic, adjustable timing, and useful maintenance access for routine sanitation.
Pros: Drain-force capability helps installations where gravity drainage is difficult.
Pros: Helpful alarms make temperature, pressure, and harvest problems easier to diagnose.
Cons: Performance drops quickly if airflow, water quality, or cleaning schedules are ignored.
Cons: The machine must be installed and serviced carefully, especially around grounding, pressure, and refrigerant safety.
Cons: Certain repairs and cleaning steps should be handled by qualified personnel only.

The NG-Series Ice Cube Makers are best suited to users who want a dependable ice cube machine and are willing to follow the installation, sanitation, and maintenance schedule closely.

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Faqs

How do I position and level an NG-Series Ice Cube Maker before the first start-up?

Place the ice maker indoors in a well-ventilated area, away from ovens, grills, and other heat sources. Make sure the front grille and rear vent stay open so air can move freely. The unit must be level from front to back and side to side using the adjustable legs, because poor leveling can affect ice shape and operation. Also leave enough clearance at the back for water, drain, and electrical connections.

What water supply requirements should be checked before installing an NG-Series ice machine?

The machine must be connected to a dedicated potable water line, with adequate backflow protection and a 1/4-inch nominal inside diameter supply tube. Water pressure should stay within the recommended range, and a pressure regulator is needed if the pressure is too high. Water quality matters because scale, taste, and cube clarity can all be affected. If local water conditions are poor, a filter or treatment system may be necessary.

How should the drain be connected on NG-Series Ice Cube Makers?

The manual supports two drain setups: gravity drain and drain force. For gravity drain, the outlet must be lower than the machine and the hose should have a strong downward slope so water flows out properly. For drain force, the pump can move water farther and higher, but the pipe routing must be correct to avoid air traps that stop the pump from draining. Incorrect drain installation can cause flooding or poor performance.

What should I verify during the first start-up of an NG-Series ice maker?

Before start-up, confirm that the machine is level, the drain is connected, and the room and water temperatures are within the allowed range. Then open the water inlet, check for leaks, remove transport protections from inside the machine, and make sure the curtain moves freely. After connecting power, switch the unit on and look for vibration, rubbing, or unusual noise. The first cubes should also be checked for correct size and shape.

Why are my NG-Series ice cubes too small, too large, or uneven?

Cube size and shape are usually linked to production timing, water supply, nozzle condition, or refrigeration performance. If cubes are too small, the freezing time may be too short or the water supply may be weak. If cubes are too large, the freezing time may be too long or the temperature probe may not be contacting properly. Uneven cubes often point to dirty nozzles, a clogged suction filter, or spray distribution problems.

What do the NG-Series alarm lights mean on the control board?

The flashing alarm lights indicate specific faults. A safety high pressure alarm points to a pressure switch issue, often related to condenser airflow or refrigeration problems. A long harvest alarm means the harvest cycle is taking too long. An ice production timeout means the evaporator did not reach the target temperature in time. A faulty temperature probe alarm means the evaporator probe is broken, disconnected, or reading incorrectly and the machine will stop.

How do I use the wash cycle on NG-Series Ice Cube Makers?

The wash cycle is started by holding the push button while switching on the main power. In this mode, only the water recirculation pump runs, which helps circulate cleaning solution through the water system. The wash cycle has a maximum run time of 30 minutes, and it ends by switching off the main power. This function should be used only after following the cleaning and sanitizing procedure, not as a shortcut for normal operation.

What maintenance is required to keep an NG-Series ice machine sanitary and reliable?

The water system should be cleaned and sanitized at least twice a year, and the storage bin should be sanitized as often as local health rules require. Regular maintenance also includes cleaning the water distributor, injectors, condenser, and internal bin surfaces, plus checking for leaks in hoses and fittings. The manual stresses using approved cleaner and sanitizer products separately, wearing protective gloves and goggles, and disconnecting power before any maintenance work.