Commercial glasswashers

Commercial glasswashers are compact dishwashing machines, typically used in coffee shops and bars to wash glasses, coffee cups, saucers and teaspoons. How are the commercial glasswashers made and how do they work? In this white paper we go through this type of solution.

Principal characteristics of commercial glasswashers

Glasswashers are small built-in dishwashers that are normally placed in coffee shops and in the cafeteria area of restaurants to wash coffee cups, cappuccino cups, saucers and teaspoons, but also water glasses and flutes and even beer mugs. Like the front-loading dishwashers, even the glasswashers have a front door from which you load the basket with items to be washed. Unlike the other models that are confined to the kitchen or in the washing area, glasswashers are almost always in sight, so it is important to take care of the aesthetics that should be harmonious and in line with the design of the other elements in the same area.

Usually glasswashers have a size of 460×530 mm and a height of about 650-700 mm, while the basket can be round or square with 400×400 mm size (or 380×380 mm as well as 350×350 mm in smaller models). These models perform wash cycles between 1 and 3 minutes depending on the degree of dirt on the objects to be washed. The productivity of a glasswasher can be estimated in about 700 glasses/hour depending on the model and the kind of basket. The structure of this machine is entirely in AISI 304 stainless steel that prevents from corrosion and it is made for full compatibility with the HoReCa market.

Figure 1: Example of a glasswasher (Elframo, model BD 46 DGT)

The power absorbed by these dishwashers is about 3 kW and the dishwasher can be powered directly from a standard single-phase socket at 230V (unlike larger dishwashers that absorb more current and are powered with three-phase voltage at 400V). The dishwashing machines are normally supplied with hot water at 55-60 ºC thanks to the boiler already present. In this way, the water heating is more efficient and allows a lower electrical consumption.

To improve thermal and acoustic insulation, the most advanced models of glasswashers have the washing area isolated from the surrounding area, thanks to a double wall with cavities. This reduces the thermal power lost in the environment, with greater energy savings, and the noise of the dishwasher itself.

How is made a commercial glasswasher?

Below the main components of a glasswasher.

Washing chamber – The basket is placed in the washing chamber above the tank. Water is collected in the tank, then it is sucked by a pump (with a power of about 0.25 kW) and conveyed into the upper and lower washing arms. The tank heating element keeps the water at a suitable temperature for the easy removal of dirt (about 50 ºC). The drain tap overflows the excess water when, during the rinsing phase, new clean water is loaded.

Boiler – Water is loaded in the boiler (a stainless steel container) from the water supply, the heating element of about 3kw heats the clean water till the rinsing temperature; this can also be 85°C depending on the items to be washed. During the rinse, water is conveyed in a separate hydraulic circuit independent from the washing circuit, so that the washing water does not contaminate the clean water used for rinsing.

Control panel – The operator, thanks to the front control panel, manages the functions of the dishwasher through a user-friendly and intuitive interface.

Elframo commercial glasswashers

Elframo offers two lines of glasswashers:

– The BE series, reliable and robust, with a single wall structure and simple electromechanical controls

– The BD series with double wall structure and digital or electronic controls, with more advanced functions and equipped with different accessories. The electronic models (VE line) can be equipped with an atmospheric boiler and an anti-reflux system to obtain higher washing flexibility and higher performance.

Contact us, we will support you in selecting the most suitable washing solution according to your needs.