Cold storage door selection and maintenance | Sliding doors, electric sliding doors, free collision doors, door seal leakage control
The cold storage door is the first point of cold storage leakage. The sealing of the door, the speed of opening and closing, and the quality of the heating wire directly affect the energy consumption of the entire warehouse, especially for high-frequency processing cold storage.
Manual sliding doors are commonly used in fresh-keeping warehouses and small warehouses; Electric sliding doors for large slaughter and cold chain warehouses; Free anti-collision doors are selected for high-frequency pedestrian and cargo passage in the workshop channel.
The low-temperature storage door comes standard with a door frame heating wire to prevent the door frame from freezing and the door seal from freezing and not opening; The heating wire is damaged, the door seal freezes and deforms, and the seal continues to leak cold due to failure.
Door seals are divided into single ring and double ring airbag seals, with priority given to double ring airbag seals for low-temperature storage; The sealing strip has aged, hardened, cracked, and collapsed, and must be replaced directly.
The Xitelide supporting cold storage door is equipped with a door magnetic switch. When the door is opened, it will be linked to the shutdown of the fan and the delayed shutdown of the unit. If the door is not closed for a long time, an alarm will be triggered to reduce the loss of ineffective cooling capacity.
Many customers only pay attention to the door price and ignore the insulation core material of the door. Hollow doors, thin insulation doors, and door frames continue to frost, resulting in high energy consumption.
The anti-collision door is suitable for frequent passage of forklifts, and automatically resets after impact, reducing forklift damage to the warehouse door and maintenance downtime; The disadvantage is that the sealing is weaker than that of sliding doors, making it suitable for high humidity processing areas.
Maintenance focus: Clean the door seal frost daily and check if the heating wire is powered on; Sliding rails and pulleys are regularly lubricated with low-temperature grease, and ordinary butter fails to solidify at low temperatures.
Foreign trade cold storage has a large temperature difference between day and night, so the heating power of the door frame needs to be increased to avoid freezing at night and affecting production.
If the door is not tightly closed and the evaporator operates for a long time, the load of the evaporator will continue to fluctuate, and the operating conditions of the expansion valve will be unstable, which is prone to intermittent liquid return and increases the risk of liquid hammer.
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FAQ
Why are low-temperature cold storage doors equipped with door frame heating wires? Prevent freezing and seal the door to prevent leakage.
What door should be selected for the passage of high-frequency forklifts? Free anti-collision door.
3. Recommended types of sealing strips for low-temperature storage? Double ring airbag sealing strip.
What is the function of the door magnetic switch? Open the door and activate the fan to shut down, triggering a timeout alarm.
Can regular butter be used for the sliding rail of cold storage doors? No, low-temperature solidification requires the use of low-temperature lubricating grease.
What should I do if the door seal cracks or collapses? Directly replacing it cannot be repaired.
7. What are the effects of the door not being closed for a long time on the compressor? The load fluctuates greatly and is prone to intermittent liquid return.
