Roomba 620
PRESENTATION
The Roomba 620 is part of the entry-level offering from world leader iRobot and many of you wanted to know if these more accessible robots are recommendable. The difference between the 600 series, which includes the Roomba 620, the 700 series and the recent 800 series is notably the accessories. Indeed, this Roomba 620 has two non-standard filters HEPA. It comes with a single "simple" virtual tag. As for the dirt detection system that features the highest models in the range, the Roomba 620 has a less elaborate version. Its navigation system, on the other hand, is iAdapt, the same as that of more expensive robots. Another appreciable point, this model launched at 430 $ is programmable.
CONVENIENCE OF EMPLOYMENT 3/5
At first glance, the look of the Roomba and its operation is recognized: only a few buttons appear on the shell, including a central "clean" button to start cleaning with a single touch.
It glows green when the device is ready for use, turns orange when the battery needs to be charged, and flashes while charging. Finally, it turns red when the battery is exhausted.
The other buttons on the shell command a return to the base ("dock") and can program the device ("schedule" and "clock" to set the time and program the robot ...).
This programming is done easily provided you have the manual in hand the first time. The operation is done with both hands, since we must maintain the "schedule" button while we choose the days and cleaning schedules. The process is the same for setting the time: the "clock" button must be held down.
Novices will be able to start a simple cleaning without any problem; they will have to learn a little to program it; a remark we make to Roomba.
Like the other models, we like the handle to transport the device from room to room.
On the other hand, it is regrettable that the collector is semi-open. It must be held upright to empty, otherwise it can be reversed. It is a collector with an average capacity of 0.5 l.
INTERVIEW 3/5
To minimize maintenance of the robot, iRobot has equipped it with two rotating brushes: one with nylon bristles and the other with rubber blades, on which the hair and hair are less entangled. However, if this phenomenon is limited, it exists and it will be necessary to plan a regular cleaning. The maintenance of the Roomba 620 is quite easy as iRobot has provided for easy removal of both brushes.
The side brush is however screwed, which does not facilitate its maintenance.
The emptying of the tray is simple. But we must be careful not to overthrow the collector "open", and sometimes, it is necessary to force a little on the tab to open it.
As for the filter, it must be dusted after each use because it gets dirty very quickly. This is a good sign though: he does his job.
NAVIGATION SYSTEM 3/5
The Roomba 620 uses iRobot sensors and the iAdapt navigation system. It is a system based on a random operation, but more elaborate since Roomba constantly calculates its position. Impossible to find a logic of displacement; we see him stringing spirals then spinning across the room, start bypassing an object and then abandon it. iRobot has made the choice to pass his robots several times to the same places to better clean.
The Roomba 620 is also equipped with a dust detection system using an acoustic sensor (a microphone that "listens" to the passage of dust). It is less elaborate than on the 700 and 800 series robots, which have a system using optical and acoustic sensors. The surface coverage is correct, but not perfect. On an entry-level product such as this one, even more than on more sophisticated devices, iRobot relies on repeated cleaning cycles to keep the floor clean.
Note that in a domestic furnished environment, the Roomba 620 forgets areas. It is imperative to have him work regularly, or even daily, to keep a clean apartment. To optimize the cleaning, it is really preferable to release this Roomba 620 in the rooms one by one. He is much less comfortable if he is left with a whole apartment, even if he is able to clean an area of 80 m². As soon as it opens several rooms, the main is cleaned but the others are neglected.
Note that he always finds his load base.
OBSTACLE MANAGEMENT 3/5
The Roomba 620 goes under them like coffee tables, sofas, libraries ... It passes without hesitation the small thresholds of door; if they are a little thick, he may not cross them, considering them as obstacles.
The owners of fragile furniture will regret, as always, that Roomba bangs sometimes a little strong.
He does not like electric cables, it's better to put them away. They do not stop him, but the robot may drag them behind him.
As for the thick test carpet, it sometimes rises on it and sometimes considers it as an obstacle, refusing to climb. It all depends on the way he approaches it; no doubt a question of angle with respect to the sensors.
The outline of the obstacles is cleaned with less precision than the more upscale models, such as the Roomba 880. It is therefore good with the obstacles but is not foolproof; however, in a room with a minimum row, he can manage independently.
VACUUM 2/5
The Roomba 620 has a dust detector; a "dirt detect" light indicates that the system is in action.
With its non-methodical navigation system, Roomba does not always pick up the same amount of dust. On thin carpet, in our test room with few obstacles, he manages to collect up to 100% of materials. In the home environment, the surface coverage is a little more random and it forgets areas, especially corners and furniture areas.
On thick carpet with long hairs, it is much less powerful, especially since it does not always climb on it. It has raised 50%, well below the average of what many robots currently do.
If he picks up the animal hair well, we noticed that, on hard floors, his navigation system without cartography did not benefit him. Indeed, it blows air from the back and sometimes has the tendency to fly the hair where it has already passed.
NOISE 3/5
iRobot announces 70 dB. In practice we measured 66 dB. It is not the most discreet device, but it is also not the loudest of this comparison. This is bearable if he works in the room where we are, but we still prefer to program it.
CONSUMPTION 3/5
We measured 26W in load and 4.7W when charged for battery maintenance. This consumption is quite high compared to competitors. The Roomba are generally a little more greedy in electricity.
MODES AND ADDITIONAL FUNCTIONS 3/5
In terms of modes, like other Roomba, this 620 offers only two. The basic mode "clean" ensures a cleaning of the whole room with a time adjusted by the robot. Spot mode controls localized cleaning: it cleans a circular area of about 1 m spiral.
Important features include programming, which we consider very important. It is scheduled every day of the week, at independent schedules. It is the cheapest robot in the iRobot catalog to offer this function.
It comes with a charging base but it can also be charged directly by connecting the transformer to the robot.
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