Fully qualified explosion-proof refrigerators for freezing

Ultra low temperature storage industrial explosion-proof refrigerator for rapid cooling

Scope of application of explosion-proof refrigerator

Explosion proof refrigerator, suitable for Class II, Class B or Class C, temperature group T1~T6, Zone 0, Zone 1, Zone 2 in hazardous environments containing explosive gases; And all hazardous areas in Zone 20, Zone 21, or Zone 22 that contain explosive dust and air mixtures.

Explosion-proof standard

GB3836.1-2010 "Electrical equipment for explosive gas atmospheres - Part 1: General requirements for explosion protection"

GB3836.2-2010 "Electrical equipment for explosive gas atmospheres - Part 2: Explosion proof type" d ""

GB3836.3-2010 "Electrical equipment for explosive gas atmospheres - Part 4: Increased safety type" e ""

GB3836.9-2006 "Electrical Equipment for Explosive Gas Environments Part 9: Sealed Type'm '"

GB3836.15-2000 "Electrical equipment for explosive gas atmospheres - Part 15: Excluding coal mines"

GB12476.1-2013 "Electrical Equipment for Explosive Dust Environments Part 1: General Requirements for Explosion Protection"

GB12476.5-2013 "Electrical equipment for explosive dust environments Part 5: Explosion proof standard" tD ""

GB/T 13384-2008 General Technical Conditions for Packaging of Mechanical and Electrical Products

GB14048.1-2006 Low voltage switchgear and control equipment Part 1: General principles

Standard design and production, passed inspection by the National Explosion proof Inspection Center, and issued an explosion-proof certificate.

Explosion proof refrigerator classification

Categories: Explosion proof (double door double temperature) freezer, Explosion proof (glass door refrigerated) freezer, Explosion proof (ultra-low temperature) freezer, Explosion proof (horizontal) freezer

Explosion proof refrigerator structure

Explosion proof refrigerator is based on high-quality branded refrigerators, with corresponding forms of explosion-proof, rubber sealing, and intrinsic safety treatment applied to each component.

Installation and Usage

1. Before installing and using the product, check whether the technical data on the nameplate matches the usage situation;

2. Before installation and maintenance, the front power supply must be cut off (it is strictly prohibited to open the cover with power on);

3. The incoming and outgoing cables passing through the rubber sealing ring must be tightened with washers and compression nuts to ensure

Sealing and cables must not be loose; To ensure reliable explosion-proof performance;

4. Wiring method, cable, steel pipe or explosion-proof hose wiring, explosion-proof box wiring needs to be installed

Explosion proof gland, spare inlet and outlet, sealed with self provided explosion-proof plugs;

5. During maintenance and disassembly, be careful not to bump, scratch, or corrode the explosion-proof surface, and regularly apply 204-1 anti rust oil;

6. The explosion-proof control box of the explosion-proof refrigerator should be regularly inspected during use to ensure its good operation;

7. Non professionals are strictly prohibited from opening the lid for inspection and maintenance.

Ultra low temperature storage industrial explosion-proof refrigerator for rapid cooling

Technical Requirements

1. General requirements

1. The purchased prototype refrigerator must comply with relevant industrial standards; At the same time, there must be an "Industrial Product Manufacturing" license and a "Product Quality Certificate".

All purchased explosion-proof equipment or related materials should have explosion-proof certificates or be certified by explosion-proof certification agencies.

The equipment used for assembling the entire machine must have a product quality certificate before it can be used for assembly.

The assembly of each component and the entire machine must comply with the manufacturing process.

The connection of the refrigeration cycle system of the 5 refrigerators must be made by welding or other connection methods specified in GB3836.10 "Explosion proof Electrical Equipment for Explosive Gas Environments - Airtight Electrical Equipment" h.

Collision and friction are not allowed between the 6 pipelines and various components during operation.

2. Structural requirements

1. The compressor must be equipped with a thermal protector or thermal fuse to limit the surface temperature; The operating temperature must be lower than the T4 group temperature.

The technical requirements for sealed components such as compressor junction boxes and sealed junction boxes must comply with the provisions of Article 4.1 of GB3836.9-90.

The circuit connectors inside the explosion-proof junction box and the connectors of intrinsic safety circuits must be welded and protected with safety wiring caps and silicone rubber.

4. Intrinsic safety and non intrinsic safety circuits must be arranged separately and securely fixed.

The cable entry device must comply with the requirements of Article 14.2 of GB3836.1-2000.

6. The electrical clearance and creepage distance must comply with GB3836.2000 respectively. The provisions of Articles 5 and 6, as well as Article 4.6 of GB3836.4-2000.

The cross-sectional area of the core wire of the 7 intrinsically safe circuit wires should not be less than 0.5mm2 copper stranded wire.

The cross-sectional area of the core wire of the power supply lead should not be less than 2.5mm2 copper stranded wire.

The cross-sectional area of the core wire of other circuit wires should not be less than 1.5mm2 copper stranded wire.

3. Anti static electricity

The surface resistance of the exposed materials inside the freezer must be less than 108 ohms.

The surface resistance of the exposed material on the outer surface of the refrigerator used in Zone 1 must be less than 108 ohms.