Efficiency and Rapidity

Colged presents a complete range of rack conveyor dishwashers offering a choice of different throughputs, dimensions and confi gurations, to provide the optimal dishwashing solution for users of all types, ranging from a large company canteen to a small health facility.

The IsyTech range offers single-rinse dishwashers with one or two wash tanks and throughputs of up to 270 racks/hour; the ProTech range is comprised of machines with double or triple rinse cycles, with recirculation and throughputs of up to 320 racks/hour; the dishwashers of the prestigious TopTech range feature very low water consumption, with multiple rinse and rinse optimisation system as standard.

Whichever model you choose, it will have all the special features for which the COLGED brand is renowned: dual-fl ow pumps, spray arms with directional nozzles and concentrated washing action to obtain the best possible results and productivity; rinse systems designed to deliver signifi cantly lower operating costs by reducing the consumption of water and detergent; double-skin construction, fully-moulded wash tanks integral dual strainers, counterbalanced doors that open to their full width for easy cleaning access; an intuitive
user interface that is simple and easy to operate.

DuoFlow

This tried and tested technology is exclusive to Colged and guarantees that the electrical power supplied to the pump is converted into mechanical washing action in the most effi cient way possible. Conventional pumps have one inlet and one outlet, the pressurised output flow is distributed to supply the upper and lower spray arms through a Tee joint; DuoFlow has instead one inlet and two tangential outlets, each of which is connected directly to the spray arms. By removing the Tee joint from the circuit, we have eliminated the main source of pressure loss, thereby ensuring better results for lower power consumption. To put it simply, with DuoFlow, the electrical power is used for washing dishes, not lost pushing water through elbow fittings!

IdroWash

And then there is the special design of Colged spray arms, with convex dimples and large number of nozzles. This design creates more stable water jets, which reach the dishes when they at maximum force, before
they divide into droplets and their energy is dissipated. Each spray arm has 12 nozzles, compared with the 5-7 of the competition and, thanks to the stability of the jets produced, the arms can be positioned closer together.
This creates a volume of water comprised of numerous separate jets, similar to the bristles of a scrubbing brush, that produces an outstanding washing action.

Pre-wash XL

It is a heavy module with length of 820 mm, with a complete IdroWash system with 3 arms. Most of the dirt is removed here and the most consistent fraction is collected by a drawer filter, which can then be emptied in just a few seconds without opening the door. A second separation takes place in the ProStrainer surface filter, which is shaped in a way to convey the dirt into a removable basket. A third fi lter is found on pump suction.

ProWind Drying

It uses air at 70°C, withdrawn from the outside and heated by a 6 or 9kW heat exchanger. A 550W radial
turbo fan sends a fl ow of 1.400 m3/hour to two upper outlets; a shaped conveyor sends the air upwards again.
Drying is optimised for plates but also for the glasses and concave objects that must receive air from below.
The air blades also have the effect of maintaining the steam inside; there is a dripping area between rinsing and
drying. The use of dry air at a relatively low temperature allows to treat even the most delicate glasses or plastic
materials safely, which would risk melting if dried in a conventional dryer. The neutral dripping area between
rinsing and drying allows the larger drops to fall naturally due to gravity before reaching the real drying area,
where a relatively dry environment is maintained.

DuoWind heavy-duty drying module

It has an overall length of 1.150 mm and has two inspection doors and residual water collection system. It uses two 550W fans that force 2.500 m3/h of hot air over the racks through a sequence of 3 funnel shaped deflector systems. This allows effective mechanical removal of water droplets without the need to use elevated air temperatures that could damage glassware and create unnecessary discomfort for operators. The air is heated by an 6+6kW or 6+9kW electrical system.

UltraRinse3 Multiple Rinse

It re-uses the fi nal rinse water several times to carry out an intermediate double rinse and preliminary rinse at the end of the wash area. The preliminary rinse removes most of the detergent present on the tableware,
keeping it in the wash tank. The double intermediate rinse completes removal and the final rinse distributes rinse aid onto the thoroughly clean tableware and promotes drying. This multiple and differentiated use reduces specific water consumption to very low values, with a saving of 36% with respect to the already excellent previous generation Colged machines and by over 60% with respect to the average of competitor products.

ProPortional Flow Change Device

Allows to change the water fl ow rate distributed through the rinse arm in a way to adapt and optimise consumption according to the advancement speed. This gives rise to a saving in water; depending on the program used it can reach 20% with consequent savings also in terms of energy, detergent and rinse-aid consumption.

ProPortional Flow Change Device Plus

Allows to change the water fl ow rate distributed through a rinse arm in a way to optimise consumption according to the advancement speed and the type of object to be washed. There are two positive effects: Less water used: depending on the program used, up to 26%.

Optimisation: the rinse is distributed according to the type of object to be washed and avoiding waste, thus guaranteeing the best result. For example, the glasses receive more water from below than above and plates more water from above than below.

DuoRinse

A sequential dual rinse system designed to offer maximum performance in heavy-duty applications and with infrequent changes of the water in the wash tanks. The system is comprised of two separate boilers, each
of which feeds a pair of rinse arms, with the water flow pressurised by a dedicated rinse pump. This ensures excellent results independently of the water supply pressure, and the wash tanks receive suffi cient water to
ensure that dirt is adequately diluted.

ProChem Detergent Management

It reduces the consumption of detergent from 20 to 60% depending on the program used. Not all of the rinse water reaches the wash tank, where detergent must be added, but just a fixed 100 lt/hour. The excess is introduced into the pre-wash, diluting the dirt in the most critical area
of the entire dishwasher. The dishwashers are usually supplied without detergent and rinse aid dispensers; electronically-controlled peristaltic pumps are available as optionals, with assembly inside the machine and direct adjustment from the control panel.

HiTech Rinse Arms

Manufactured in ProComposit composite material (matrix in resin with an isotropic load of glass fi bre and micro-granules of talc); they are injection moulded and welded with vibration technology. Complex ducting is obtained, which promotes the fl ow of fl uid, thus reducing pressure drops. There are a different number and type of stainless steel spray nozzles, obtained from precision mechanical machining, depending on the type of rinse. The composite arms are lighter, safe to handle, easy to clean and with longer duration over time with respect to the traditional steel arms.

Lower operating cost

ProHeat heat recovery system

This device condenses the water vapour inside the dishwasher, and uses the latent heat of the steam to heat the water before it enters the boiler, thereby allowing the installed power to be reduced by 5 kW. It uses an extractor fan to aspirate the steam and two heat exchanger coils with a total surface area of 26 m2; the standard heat exchangers are made of copper, but for applications using osmotic water, special stainless steel heat exchangers are available. In the TopTech rack conveyor, the standard heat recovery system is controlled electronically, being switched on and off according to the temperature of the water supply.

ProHeat heat recovery system Heat pump plus

An evolution of the standard system, this modular system has three heat exchangers that work either in series or in parallel depending on the version, so as to achieve the maximum thermal efficiency. This leads to energy savings of up to 8 kWh per hour of operation.

Heat pump

A system with high thermodynamic effi ciency that heats the water before it enters the boiler, using heat gained from condensing the steam present inside the wash tank. It is able to recover thermal energy equivalent to 3,7 times the electrical energy consumed, and allows the installed power to be reduced by a good 8 kW. The most important advantage that this system has over a normal recovery system, and one which justifi es the higher purchase cost, is that the air emitted is not hot and humid but cool and dry, thereby making it much easier to maintain a good quality working environment in the dishwashing zone.

AutoTimer modules

The timer controlled washing system reduces energy consumption during stand-by periods by progressively switching off all the electrical loads except for the heating elements of the wash tank and the boiler, which are controlled by their respective thermostats, so that the dishwasher is ready to resume work at any time. The machine re-starts when a rack is
inserted.

RinsEconomizer

In any dishwasher, most of the power, water and chemical products are consumed during rinsing. For this reason, our rack conveyors are fitted as standard with a device that stops rinsing if there is no rack present. This electro-mechanical system is simple, effective and reliable.

Management of the ProActive

The various modules of the dishwasher are only activated if there are dishes to be rinsed. The system detects the positions of the racks inside the dishwasher and sends this information to the electronic control card,
which activates the relative zones accordingly. This is an evolution of the Thermostop and Rinse Economizer systems that can provide signifi cant savings in cases where the machine is used intermittently. In addition, the
system manages sequential startup of the various zones after a shutdown, so as to avoid current surges that could damage the system.

User-friendliness

C4I Interface

It uses a 6’’ touch screen and two capacitive buttons, one with changing colour for immediate understanding
of the appliance status. The interface allows to select a wash program from the many available and to display
the status of each individual area, from the entry of the water to drying. Advanced self-diagnosis that includes
a log of the alarms intervened and a troubleshooting function to identify possible solutions to problems
encountered. The information is provided via icons and text messages in one of the pre-set languages.
Display of daily and total operating hours. A series of menus with protected access allow the technicians to adjust each individual operational parameter, from the language to the advancement speed of the tableware, from the wash and rinse temperatures to the combination of pumps and arms to be activated. The connectivity is assured by an optional plug-in module that allows to access all functions through a PC connected via USB cable.

ProSmart Interface

It uses a LED screen with 4 digits and two variable colour side bars. The interface allows to select a wash program from the many available. The tank and boiler temperatures and the number of operating hours are demonstrated on request; advanced self-diagnosis that includes an archive of alarms intervened. The information is provided via codes and brief messages. A series of menus with protected access allows the technicians to adjust each individual operating parameter, the advancement speed of the tableware to the washing and rinsing temperatures.

Programs

The dishwashers are fitted with a series of specifi c programs for the different conditions of use. The programs
differ regarding temperature and power of the wash, the contact time, the temperature, flow rate and rinse
distribution. Therefore, differently from most competitor products, limits are not given to just going “quicker” or
“slower” but the percentage breakdown of the elements that contribute to washing are really changed, optimising
the process in a way to wash greater quantities of tableware more effectively in a shorter period of time.

Accessibility

All modules have fully opening counter-balanced doors that allow easy access to any point of the washing chamber. This is also valid for the integrated wash and dry module with unique surface; exclusive to Colged. The electric and hydraulic components are accessed for maintenance by removing the front panelling, thus obtaining a completely free surface also in this case.

Construction

Fully-moulded self-cleaning wash tank, wash chamber without internal piping, doors with insulated and counter-balanced double walls that are very light to lift. Easy to remove and replace wash and rinse arms, module separation curtains in plastic for use with foodstuffs which can be removed without the aid of tools. Construction with full double wall to reduce environment noise pollution to less than 70 db.

ProStrainer

The filter is comprised of a fl at surface that tilts towards the exterior of the machine, so that solid waste slides into the collection basket, which is positioned where it can be easily accessed by the operator and emptied in just a few seconds. The filter is either made from composite material or stainless steel, depending on the model.

ProGressive*

The pre-wash module and the washing module have a drawer pre-filter that collects the excess dirt eliminated by the “hydraulic brush”, before it reaches the wash tank. The fi lter can be extracted without opening the door and can be emptied in just a few seconds. Its construction prevents dirty water dripping onto the floor during extraction. The organic waste does not end up in the drain but can be collected and re-cycled. In the machines with pre-wash, the second pre-filter with dense mesh network progressively fi lters the dirt, ProGressive, system and keeps the water in the wash tank extremely clean, with obvious advantages when washing glasses and particular tableware.
* optional for IsyTech and ProTech.

Operational flexibility

Modular construction

The dishwashers are available with and without pre-wash and with one or two wash tanks. They all have drying and heat recovery as standard. Versions can also be provided with corner pre-wash and drying for better
adaptation to the conformation of the wash area, while the other elements available on request with surcharge complete the possibility of adapting the dishwasher to the user’s needs.

Simplified assembly

The modules are joined by an innovative system that makes the dividing and re-assembly operations very fast. The electric and hydraulic plants are also developed to greatly simplify these operations. In this way, no entrance is so narrow to not allow installation of a dishwasher. A particular joint strengthening and centring system (patent pending) is used in the connection, which means silicone or other sealants do not have to be used.

Basket conveyor

500W advancement motor, conversion of movement via eccentric or oscillating slide. Basket guide with double lateral track to leave the central area of the basket completely free for the passage of the water; very thick stainless steel oscillating fi ngers. The oscillating slide moves on anti-friction plastic rolling material. Useful dimensions of the basket passage mouth: 500 x 450 mm. Anti-slip safety with oscillating arm and without friction disks in order to prevent any damage to the conveyor system in the event of accidental blockage of the basket. Set-up for connection with end run stop microswitch.

Large actual aperture

The new rack conveyor dishwashers have an actual aperture of 45 cm, which allows easy loading using specifi c baskets, oven trays, Gastronorm trays, heat-insulated trays for distribution of food, plates also with large diameter, tall and valuable glasses, pans and various utensils.