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Two Zones Thermal Shock Chamber Manual And Specification

The two zones thermal shock chamber manual is helpful for the engineer who will operate a temperature shock test. Here is an article of the user manual for two zones thermal shock chamber which comes from Wewon Environmental Chambers Co., Ltd. This should be the easier way to make the engineer who will operate and maintain the two zones thermal shock chamber during their test. If you have any question there, Please inquiry to us !

A two zones thermal shock chamber is a testing equipment used to simulate rapid temperature changes in a material or product to evaluate their durability and robustness. It consists of two independently controlled chambers, typically a hot and cold chamber, joined by a transfer mechanism. The transfer mechanism moves products from one chamber to another in a short time, typically within a few seconds, to simulate the effect of rapid changes in temperature on the product’s performance.

Two Zones Thermal Shock Chamber Manual
A. Synopsis
B. Construction
C. Operate
1. Introduction Summary, Structure and Operate
A. Specifications
B. Installation Place
C. With Electrical Installation Matters
D. Condensate Drainage
2. Specification and Installation
A. Power Circuit Breaker (N.F.B)
B. Under-Phase Protector
C. Overcurrent Protector
D. Over-Temperature Protector
E. Pressure Protector, Oil Pressure Protector of Compressor
3. Maintenance Equipment and Troubleshooting
A. Power Supply
B. Room Temperature
4. Check Before Operation
A. Use Precautions
B. Matters Needing Attention during Installation, Maintenance
5. Daily Use Precautions and Maintenance Matters
Wewon two zones thermal shock chamber, which adopts unique thermal breaking structure, thermal storage and cooling effect, and applies the switching mode of cold and hot air to the test products for cold and hot impact testing.
The two zones thermal shock chamber include: body structure, refrigeration system, damper change system, cold heat circulation system complex thermal system, automatic control system, alarm system, protection system, etc
A. Summary
The structure can be divided into three parts: high temperature storage area, low temperature storage area and test area.
The inner and outer shell plate is made of superior corrosion resistant stainless steel plate SUS#304. Insulation material adopts polyethylene to form foam and glass wool insulation (insulation thickness 10.0 cm)
1. Body Structure Frame
Compressor System Contains: Compressor, condenser, refrigerant controller, evaporator, receiver, dryer, filter or strainer, solenoid valve, heat exchanger, flexible tube, etc. 2. Compression Refrigeration Circulation System
B. Structure
The two zones thermal shock chamber is divided into three parts: high temperature area, low temperature area and test area.
When the test sample is placed in the test area, the power supply will be turned on and all air doors will be switched on.
The high temperature area will start to store heat, and the low temperature area will start to store cold.
When the temperature is transported to the set value, the test conditions will be implemented.
Between the test area with high temperature area, damper change system shut down.
Through external air to room temperature, damper change system shut down.
Between the test area with low temperature area, damper change system turn on.
When the cooling degree is given, the coldness in the low temperature zone is directly impacted by the wind path to the test product.
When the test zone reaches the test temperature, the heater in the low temperature zone starts to heat and the temperature is kept constant at the low temperature condition required for the test.
1. Low Temperature Impact Test
Between the test area with low temperature area, damper change system shut down.
Through external air to room temperature, damper change system shut down.
Between the test area with low temperature area, damper change system turn on.
When the heat is given, the heat stored in the high temperature zone is directly impacted by the wind path to the thermal shock chamber.
When the test zone reaches the test temperature, the heater in the high temperature zone starts to perform the P.F.D operate, so that the temperature is constant and the test is required, high temperature test conditions.
2. High Temperature Impact Test
Between the test area and high temperature, damper change system shut down.
Between the test area and low temperature, damper change system shut down.
Through external air to room temperature , damper change system turn on.
When the test sample is to be tested frequently, the damper change system in the high temperature zone and the low temperature zone will be automatically turned off.
The damper change system of the external air will be turned on, and the suction fan of the external air will be automatically turned on, so that the test sample reaches the normal temperature in a short time.
3. Normal Temperature Impact Test
C. Operate
1. Introduction Summary, Structure and Operate
Two Zones Thermal Shock Chamber

Some key specifications that you’re likely to find in a two zones thermal shock chamber manual are the temperature range and accuracy, transfer time between chambers, the volume of the testing chamber, and the number of product samples that can be tested simultaneously. Other important specifications to consider include the type of refrigeration system used, the control system’s reliability and accuracy, and the safety features built into the chamber to ensure that operators and products are protected during testing.

It’s worth noting that the specifications and requirements for a two zones thermal shock chamber may vary depending on the industry and product being tested. Therefore, it’s essential to consult with a qualified expert in thermal shock testing equipment to ensure that the chamber’s specifications meet your specific needs and requirements.

In conclusion, a two zones thermal shock chamber is an equipment used for testing the durability and robustness of a material or product in rapid temperature changes. The specifications of the chamber typically include temperature range, accuracy, transfer time, chamber volume, and safety features. It’s essential to consult with a qualified expert to determine the appropriate specifications for your testing needs.

The highest temperature in the high temperature zone is 180C
The lowest temperature in the low temperature zone can reach -70C
Temperature zone (test temperature): high temperature: 50C – 200C/Low temperature: 0C – -70C
Test room material: made of stainless steel inside and outside
Control system: adopts digital display, scale, integral, differential and solid state relay (PID+SSR) control loop
Cooling method: Water Cooling/ Air Cooling (Options)
A. Specifications
The installation location should consider the heat dissipation efficiency of the machine and easy to check and maintain.
The two zones thermal shock chamber should be at least 60 cm away from walls and any other machine
Set up with a flat, vibration-free floor (please check with a water meter)
The ambient temperature should be maintained between 100C and 300C for optimum stable operation of the machine.
The two zones thermal shock chamber should be far away from heat source and inflammable and explosive material.
The thermal shock chamber should not be exposed to direct sunlight and maintain indoor air circulation.
Please avoid setting it in places with a lot of antibodies and dust.
Power supply lines and water supply and drainage pipelines should be shortened as much as possible
B. Installation Place
Please distribute the power according to the following method, Please pay attention to the power capacity, do not more than one machine at the same time, so as not to produce pressure drop, affect the performance of the machine, or even cause fault stop.
The grounding wire must be properly constructed. According to the technical guidelines for electrical equipment, the third type of grounding engineering should be kept at 50 ohms.
If you connect the grounding wire to the water pipe, the water pipe must be a metal pipe that is grounded (and all metal pipes can be grounded effectively)
Do not connect the ground wire to the oil or gas pipe.
C. With Electrical Installation Matters
On the back of the shock chamber is a defrost evaporator drain pipe, which shall be installed in accordance with its diameter and shall be inclined along the ground to avoid being higher than drainage products, so as to avoid condensation and shrinkage in the low temperature area. Wewon Environmental Chambers Co., Ltd. Copyright D. Condensate Drainage
2. Specification and Installation
The distribution furnace has a main power circuit breaker, a high temperature zone power circuit breaker, a low temperature zone power circuit breaker and a control loop system power circuit breaker. When the power indicator is not lit, check it.
When the parts is not operating, check it. (1) The voltage is unstable or there is a surge voltage, this part will trip. (2) One test voltage will trip when three phases are unbalanced
A. Power Circuit Breaker (N.F.B)
When the parts are not working, replace it.
When the power supply is incorrect or in phase at a time, check it.
When this mechanism is in motion, all control loop systems do not operate at all, and it is necessary to check whether the phase is out of phase or the phase is incorrect.
B. Under-Phase Protector
Compressor overcurrent protector in the switchboard, circulating fan overcurrent protection, damper change system conversion motor over power protector.
When the compressor, circulating fan and damper change system conversion cylinder are not operating, check it.
Whether the room temperature is too high (must be within 100C -300C)
Whether the defrosting is poor in the low temperature zone, and the condensed water is not discharged completely.
Whether the fan blade is stuck by debris.
Whether damper change system is stuck by debris or fixed screws.
Damper change system micro-motion shutdown is faulty.
Troubleshooting for two zones thermal shock chamber:
C. Overcurrent Protector
The switchboard has an over-temperature protector in the high temperature zone and the low temperature zone, which will act when the temperature exceeds the safe range.
High temperature zone safety range is limited to 250C
The safety range of the low temperature zone is 100C
Check if the over temperature protection switch is faulty
Check whether the circulating fan is not in operate
Check if S.S.R is guided through
Troubleshooting for two zones thermal shock chamber:
D. Over-Temperature Protector
E1. There are two kinds of protectors on the refrigeration system circuit.
The high and low pressure protection acts when the high and low pressure of the refrigeration system circuit is abnormal, so as to achieve protection.
a. Coolant loss
b. Room temperature is too high
c. Voltage instability, Compressor starts and stops frequently
d. The sun shines on the machine
e. Cooling fan not in operate
f. Poor ventilation in the place where the machine is set up
The reason for the operate of two zones thermal shock chamber:
The normal oil level of the freezer should be 1/2-2/3 high in the oil window.
The reason for the operate: whether the oil separator is faulty, so that the separated oil cannot be recirculated.
E2. Oil pressure protector acts when freezing and lack of oil.
On the precision control of temperature, a heating system must be installed besides the cooling circulation system to control the high temperature part.
To maintain the fine cooling of the temperature under the condition of low temperature,
The reheating system is a high efficiency electrical heating pipe to generate the necessary heat in the box.
Through the centrifugal fan, through the air medium for heat exchange, to transmit the temperature to every corner,
Since PID + SSR control is used, the control on temperature can reach the control error within 2C.
In the safety measures, the double high temperature overheating protection device can completely avoid overheating.
E3. Reheating System
The test area is fixed and stationary. It is not necessary to move all the test conditions (low temperature, normal temperature, high temperature) and the air path is automatically converted to achieve the test purpose. E4. Damper Change System
E5. Control System: Alarm system + Safe Protection System
E6. Circuit breakers, temperature over-temperature protectors, provide local test products and operator safety protection, and regularly check for faults.
E7. It is absolutely forbidden to test explosive, flammable and highly corrosive substances.
E. Pressure Protector, Oil Pressure Protector of Compressor
3. Maintenance and Troubleshooting
Matters Needing Attention During Installation and Maintenance the Two Zones Thermal Shock Chamber Manual:

1. The temperature test room can not be installed upside down and must be placed horizontally on the floor to make the operation of the temperature test room easy to open, reducing the noise during mechanical operation.

2. A good ventilation space should be maintained behind the test chamber so that the condenser can be used for cooling. And avoid direct sunlight, not close to the heating furnace, so as not to affect the freezing effect.

3. Although the materials inside and outside the test room are made of high-grade stainless steel, the wet water is easy to make the machine and the electronic control center have adverse effects and reduce efficiency. It should be avoided as much as possible.

4. Please use the special switch for the power switch. Do not use the cord of the common SW plug with other electrical machinery. Do not place the floor or wet place to avoid stepping or leakage.

5. Where the power supply voltage is too low, an autotransformer should be provided to increase the voltage to the rated value, and the compressor motor cannot be burned because the voltage is too low to start.

6. Read the two zones thermal shock chamber manual and specification, During the test, the operation door cannot be opened for a long time to avoid the water fog in the test room.

7. Warm test room should be kept clean at all times, when the box clean, can be coated with a little light oil, with soft dry cloth polish, if too dirty, apply neutral wash agent and clean water, never use brush grinding powder, acid, benzene oil or hot water to wipe the inside and outside of the machine, back or between the walls of the most easily covered dust, and the heat dissipation of the condenser, should always pay attention.

8. If your bought the two zones thermal shock chamber with a water-cooled design, special attention should be paid to the treatment of water quality. Groundwater should be avoided as much as possible. Because groundwater contains more minerals, it is easy to produce scale and affect the cooling effect, so as to reduce the life of the machine.

9. In order to facilitate the operation of the complete system, the automatic control system, alarm system, protection system, and induction are arranged in the electronic control center, displayed on the control panel, and the status indicator is also displayed. If abnormal or malfunction occurs during operation, the protection system The power will be automatically cut off and the red light will be automatically alerted.

Make sure the external power supply is properly connected, and check whether the voltage value is rated AC380V three-phase, and whether the ground is properly connected. Two zones thermal shock chamber manual and specification.
Determine whether the air around the two zones thermal shock chamber is well ventilated and whether the room temperature is between 10C to 30C; If it is water-cooled, make sure that the cooling tower is filled with water.
4. Check Before Operation:
During operation, please do not open the door of the test room unless absolutely necessary, otherwise it may lead to the following adverse consequences.
If the high temperature heat is blown out of the box during high temperature test, it is very dangerous.
If low temperature test, the freezing system easy to frost, affecting the test results.
The inside of the door is still hot, causing injury.
High temperature air may trigger a fire alarm and cause a malfunction.
Please note that this two zones thermal shock chamber must be safely and reliably grounded to avoid static induction.
Avoid turning the refrigeration unit off and on within three minutes.
If the water is cold, use tap water or treated soft water to keep the cooling system loop running smoothly.
If hot test sample are placed in the test room, please use extra power to control the test power supply. Do not use the local power supply directly.
5. Daily Use Precautions and Maintenance Matters
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