GEZE DORMA Door Closers

Here at Door Technologies, we can supply and install door closers to all kinds of doors, both internal and external, and regardless of whether they're push or pull operated, they also are certificated to BSEN1154.

All fire doors are required to be fitted with door closers so that the door will close quickly in the event of a fire and provide the utmost protection from smoke and the spread of any flames. However, whether they're fitted to fire doors or non-fire doors, you can be sure that our range of door closers will prevent damage to doors that are opened too forcefully or slammed shut by providing just the right amount of resistance.

DOOR CLOSER

1. Most door closers have two levels of adjustable features: the closing speed and the latching speed. These features are designed to prevent the door frame from getting damaged due to the movement of the active fan.

2 . The opening damping feature of a door closer is very important for building exterior doors. It prevents the movement of the active fan and thus, prevents it from getting damaged due to wind. Only high-quality door closers have this function.

3. The hysteresis closing function of a door closer is very important for children and the elderly. It makes the active fan stay in the open position for a certain period of time.

4. The closing force of a door closer is a sign of its significance, as it can vary depending on the model. Usually, the closing force is set to a specific model, but it can also change due to weather conditions. For instance, in winter, the wind can cause the closing force to be very strong, while in the summer, it can be very low.

5. Although the closing force of a door closer can vary, it is still important to have a door closer that has this function.

1. Installation screws loose or lost, resulting in the door closer is not in the correct installation position, connecting arm damage.

2. The door closer to close the buffer effect becomes poor, resulting in the door and the door frame between the impact, the door body deformation.

① From the structural point of view, the door closer is a closed whole, from the appearance of the basic can not see its quality as good or bad.

② the most critical quality issue of the door closer is whether oil leakage because the door closer is dependent on its internal hydraulic system in the throttling of fluid to achieve control of the closing process, oil leakage means the failure of the hydraulic system, so the hydraulic system is the only criterion to determine the service life of the door closer.

③The most important reason for oil leakage is that the pinion support guide wears to increase the gap, the seal ring wears to cause a decline in sealing effect or the throttle spool rotates counterclockwise away from the valve body when the buffer effect is adjusted.

④ The reduction of the buffer effect of the door closer is caused by the entry of air due to oil leakage or the increase of the clearance between the guiding surface of the rack plunger and the valve body (throttling). Therefore, the quality and precision of the material, heat treatment and machining of the pinion, and support guide parts are very important.

⑤ For the poor buffer effect of the door closer, throttling by adjusting the throttle spool alone is not a fundamental solution. If the oil leakage is at the support guide, remove the support guide, check the condition of the seal, such as worn or aging failure, and replace the seal. If the gap between the support guide and pinion shaft is too large, replace the support guide. If the rack plunger guiding plunger surface wear, and the valve body with increased clearance between the throttling effect decreases, can remove the rack plunger, with the surface chrome plating method to repair. In addition, to ensure that the door closer cushioning effect, switching to a softer spring, is also a way to reduce the impact force of the door on the door frame after the cushioning effect becomes worse.

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We should consider the weight of the door, the width of the door, the frequency of opening the door and the use of the requirements and use of the environment, and other factors in the selection of door closers.

The weight of the door and the width of the door is the most important factor in selecting the door closer model, common doors are fire doors, wooden doors, aluminum doors, glass doors, steel doors, etc.

Usually, the weight of the door is small, choose the model with less power, and vice versa. And open the door frequency is closely related to the quality of the product factors, for frequent use of the occasion, should require the product sealing performance to be good, long life. Only a reasonable and appropriate choice, in order to give the purchase of a suitable product for their own, to be able to bring the greatest convenience to life.Welcome to Speedwrite. You need to paste in more than 100 (one hundred) words. For the best predictions, paste in at least five paragraphs, or 100+ words. Ready to start? First, delete this paragraph. Next, paste at least 5 paragraphs, or 100+ words, into this window.

Floor Springs

Floor springs are incredibly robust and durable and are a great alternative to face fixed and overhead door closers. The floor springs are less obtrusive, which also makes them ideal for use in high traffic areas or where a door is double or single action. Plus our floor springs are ideal for use in high traffic areas where the single or double action.