Common faults and treatment methods of fire rolling shutter door maintenance
Fire resistant rolling shutter doors are constantly applied to large supermarkets, shopping malls, underground garages, workshops and other crowded places. It is inevitable that some small problems will be encountered and need to be solved. I will summarize some points for your reference.
1、 The fire shutter door does not act: first, check the power supply to see if the power supply air switch of the fire shutter door has power. If there is no power, check the power supply. If there is power, the power indicator of the roller shutter control box should be green at this time. If the indicator light is not on, then we should check whether the transformer in the control box (the resistance of the transformer is 270 ohms) is burned out. If the power indicator flashes green, it indicates that the power supply may be out of phase. If the power supply is not out of phase, it may be that the standby power board of the control box is burned out; It is also possible that both the power board and the standby power board are burned out.
2、 Henan fire shutter door power supply air switch cannot be pushed up: when delivering the gate, the air switch cannot be pushed up, first check whether there is a problem with the standby board, and the resistance of the output line of the standby board is about 300 ohms. In case of open circuit or short circuit, check whether the motor brake is burnt or whether the spare board is burnt.
3、 The operation button does not work properly: you should first press the Stop key, then press the Reset key, and then press the Up and Down keys.
4、 The indicator lights of the power control box or button panel are all on: at this time, first check whether there is a short circuit in the button line or a button may be pressed to death. If the above phenomenon does not exist, it may be that the chip on the power main board is broken, and then replace the chip. Pay attention to wearing the clothes in reverse (that is, the opening faces the opening).
5： Henan fire shutter door button can only be operated up or down: at this time, check whether the limit line is disconnected. If not, it may be that the main power board is broken.
6、 The operation button is not easy to use or any button pressed is downward: first check whether the connection between the main switchboard and the standby switchboard is loose
7、 Add locking control: just connect a resistance of about 1K in series on the 5th and 12th spaces of the flat cable.
8、 Judge whether the motor is good or bad: the three-phase resistance of the motor is 47-70 ohms and the three-phase is balanced. Three phase imbalance may be caused by motor failure.
9、 When the fire roll up door gives an alarm, the fire roll up door should be lowered to the bottom automatically first, and no button should be pressed on the way, and then it can go up.
10、 Installation and commissioning of fire rolling shutter door: before installation and commissioning, check whether the connecting lines of controller, button box, door rolling machine, travel switch and electric brake are normal, and then conduct commissioning after confirmation.
Applicable scope of fire rolling shutter door
When we install it, we need to pay attention to the following problems: the depth of the guide rail. If the depth of the guide rail is not enough and the structure and materials are improper, the door curtain will easily fall out of the guide rail in case of a fire, which will not play a role in fire prevention.
The strength of the roller shutter shaft of the fireproof roller shutter door: the strength of the roller shutter shaft is also an important parameter of the roller shutter door. At present, there are many products with unqualified strength, which seriously affects the use of the fireproof roller shutter door, There should be two flanges and enough welds.
Its pre rolling problem is that the fire shutter door, especially the steel fire shutter door, is relatively heavy, so a circle of pre rolling will be reserved on the reel to reduce the tension of the curtain weight on the screws. Prevent a curtain from cracking. Fireproof electric cabinet, smoke and temperature sensing, and national standard regulations on fire temperature control and door closing.
When a fire occurs within 2m of the rolling shutter door. The power supply is interrupted. When no one is operating on site, there should be a fire temperature fuse control door closing device, which is especially important for crowded places. When we use it, we should also pay attention to its maintenance.
Manual control inspection of fire rolling shutter door: during the process of button operation rising (or falling), the operator should pay close attention to whether the rolling shutter door can automatically stop when it should rise (or fall) to the end position. If not, it should be stopped manually quickly, and the operation can be resumed only after the limit device is repaired (or adjusted) normally.
Automatic control inspection: when the burning cigarette and other smoke sources cause any smoke sensation in the system to act, the automatic device will send out an alarm signal, and at the same time, the electronic control system of the rolling shutter will automatically start and slide down twice to close the rolling shutter. The roller shutter will slide down to about 1.2 meters above the ground and stop. After a delay of about 90 seconds, the roller shutter will automatically start and close.
The roller shutter that has not been opened and closed for a long time must be maintained once every six months. The contents are to eliminate dust, paint, and lubricate the sprocket roller chain of the transmission part.
Check whether the electrical circuit and equipment are damaged, whether they operate normally, and whether they comply with various instructions. If they are damaged or not, they should be inspected immediately. It shall establish a regular maintenance system, keep records of the maintenance of each roller shutter, and keep records on file.
