Common operating failures and solutions for rolling shutter doors
In the daily use of rolling shutter doors, we often encounter operational failure problems. In order to solve the problem, we may search the Internet for the causes and solutions. Kunshan Xinhengbang Door Industry Technology Department summarized some common problems and gave Answer, you can save it for later search. Of course, when the rolling shutter door fails, we still recommend finding a dedicated person to repair it, which is efficient and safe. 1. When the rolling shutter door stops in the middle, the door body slides down. It is usually caused by the brake in the drive motor slipping. It is usually caused by the following reasons: 1. The brake friction plate of the rolling shutter door is oily. You can remove the friction plate and clean it with cleaning agent before reinstalling it. 2. The compression spring is aging and the pressure is reduced, so the spring needs to be replaced. 3. The electromagnet is assembled incorrectly and the brake pressure plate cannot return accurately; it needs to be disassembled and reassembled. 2. The chain of the rolling shutter door cannot be pulled. The main reasons are: 1. The chain ring blocks the cross groove; straighten out the chain and try again. 2. The brake cannot be released and the release device is stuck; check and eliminate. 3. The rolling shutter door cannot be opened and closed, and the motor does not start. The reasons can be determined from the following points: 1. Disconnect the circuit and check the wires. 2. The running capacitor is damaged, replace the running capacitor. 3. Overheating protection fails. Replace the thermal protector. 4. The brake is stuck if it has not been operated for a long time. Pull and turn the manual chain a few times to release the brake. 5. The normally closed contact of the limit switch is blocked. Polish the contacts or replace the limit switch. 6. The relay coil is broken, oxidized, or contaminated. Replace the relay. Hongfa Automatic Doors has focused on the production and research and development of rolling shutter doors for 20 years. It has a professional maintenance team specializing in various rolling shutter door brands. It is fast, efficient, good quality and trustworthy. 
