Principle of autoclave sterilization and precautions for use
Electric pressure steam sterilizer use precautions
1. Please read the instructions carefully before use.
2. The method of use is carried out by adding water, stacking, sealing, heating, sterilizing, drying, cooling and final steps.
3. Every time you use it, check the water level gauge and observe the alarm indicator. You must add enough water.
4. Pay special attention to the conductive column in the water level gauge, so that it is located in the middle of the water level glass tube.
5. The safety valve handle should be pulled 1 or 2 times a week to maintain its flexibility.
6. The electrical connector should be tightened to prevent overheating due to looseness.
7. It should be grounded exactly to ensure safety.
8. Regular maintenance, cleaning, drying and inspection and maintenance to ensure normal operation and avoid accidents.
High pressure sterilization Principle and precautions
YXQ-LS-70A vertical pressure steam sterilizer is widely used in hotels, hospitals and other departments to disinfect heat-resistant articles. It has pressure, temperature adjustable function and low water level power off anti-dry burning protection functions, easy to use and high reliability. The following is a brief analysis of the working principle and introduction to the use of precautions.
First, the working principle
The sterilizer circuit is composed of a main circuit, a control circuit and an indication circuit. The main circuit is powered by three-phase 380V AC, and is connected to the main contact (normally open) KMl-1, KMl-2, and KMl-3 power supply sides of the AC contactor KM1 via the fuses Ful, FU2, and FU3. Its load is flanked by electric heaters EHl, EH2, EH3. After the AC contactor is normally pulled in, its main contacts KMl-1, KMl-2, and KMl-3 are closed. Connected to a Y-connection form. The electric heater is heated by electricity to heat the water in the water tank. At the same time, 380V AC is drawn from the load side of the fuse FUl FU3, and the fuses FU4, FU5 and the band switch S1 are used as the power supply for the control circuit and the indicator circuit. When the band switch S1 is closed. S1-l and Sl-2 are connected to 380V AC and divided into two ways: one is applied to the transformer Tl primary, and the secondary output is 6.3V AC as the power of each related indicator. At this time, the power indicator HL6 is on. The other way is the control loop power supply, 380V AC through the relay K2-2 normally closed contact, low water level reset button SB, band switch Sl-4 and pressure selection switch S2 (S3, S4) to the AC contactor KMl coil ends, KMl After receiving electricity, the main contacts KMl-1, KMl-2, KMl-3 are closed, and the electric heaters EHl, EH2, EH3 are electrified to start heating. Heat the water in the tank. As the water temperature in the tank increases, the steam generated enters the sterilizer. When the steam pressure in the sterilizer reaches the set value, the pressure bellows is deformed, the pressure selection stroke switch S2 (or S3, S4) is turned off, the AC contactor KMl coil power supply is cut off, and the KMl is powered off. The normally open contact is disconnected and the electric heater stops heating. The pressure selection stroke switches S2, S3 and S4 are respectively driven by three bellows which can measure different pressures. Connect the AC contactor KMl current through the band switch Sl-4. Achieve the choice of the temperature of the disinfection pressure required for different items.
The transformer T2 will step down the 380V AC and the secondary output will be about 15V AC. After being rectified by the rectifier bridge UR, it will provide DC power to the low water level protection circuit.
When the water level in the water tank is lower than the lower limit. The switch S5 of the low water level conductive column is closed, the triode VT2 is cut off, the VTlb pole potential is approximately ground potential, and VTl is turned on. Relay K1 is closed, normally open contact K1-1 is closed, relay K2 coil is turned on, relay K2 is closed, normally closed contact K2-2 is disconnected from AC contactor KMl coil power supply, normally open contact KMl-l, KMl-2, KMl-3 is disconnected, and the electric heaters EHl, EH2, and EH3 are turned off. Avoid the occurrence of failures such as dry burning and fire caused by heating at low water levels. At the same time, the normally open contact K2-3 is closed, and the low water level lamp HL5 is on, and a prompt is issued. The K2-1 normally open contact is closed to supply power to the relay K2 for self-holding. When the water level returns to normal, it must be checked by the staff. When confirming that it is not a false water level, press the low water level reset button SB. The relay K2 is powered off and released from the holding contact K2-l. After the normally closed contact K2-2 is closed, the sterilizer can start working again.
YXQ-LS-70A vertical pressure steam sterilizer is widely used in hotels, hospitals and other departments to disinfect heat-resistant articles. It has pressure, temperature adjustable function and low water level power off anti-dry burning protection functions, easy to use and high reliability. The following is a brief analysis of the working principle and introduction to the use of precautions.
First, the working principle
The sterilizer circuit is composed of a main circuit, a control circuit and an indication circuit. The main circuit is powered by three-phase 380V AC, and is connected to the main contact (normally open) KMl-1, KMl-2, and KMl-3 power supply sides of the AC contactor KM1 via the fuses Ful, FU2, and FU3. Its load is flanked by electric heaters EHl, EH2, EH3. After the AC contactor is normally pulled in, its main contacts KMl-1, KMl-2, and KMl-3 are closed. Connected to a Y-connection form. The electric heater is heated by electricity to heat the water in the water tank. At the same time, 380V AC is drawn from the load side of the fuse FUl FU3, and the fuses FU4, FU5 and the band switch S1 are used as the power supply for the control circuit and the indicator circuit. When the band switch S1 is closed. S1-l and Sl-2 are connected to 380V AC and divided into two ways: one is applied to the transformer Tl primary, and the secondary output is 6.3V AC as the power of each related indicator. At this time, the power indicator HL6 is on. The other way is the control loop power supply, 380V AC through the relay K2-2 normally closed contact, low water level reset button SB, band switch Sl-4 and pressure selection switch S2 (S3, S4) to the AC contactor KMl coil ends, KMl After receiving electricity, the main contacts KMl-1, KMl-2, KMl-3 are closed, and the electric heaters EHl, EH2, EH3 are electrified to start heating. Heat the water in the tank. As the water temperature in the tank increases, the steam generated enters the sterilizer. When the steam pressure in the sterilizer reaches the set value, the pressure bellows is deformed, the pressure selection stroke switch S2 (or S3, S4) is turned off, the AC contactor KMl coil power supply is cut off, and the KMl is powered off. The normally open contact is disconnected and the electric heater stops heating. The pressure selection stroke switches S2, S3 and S4 are respectively driven by three bellows which can measure different pressures. Connect the AC contactor KMl current through the band switch Sl-4. Achieve the choice of the temperature of the disinfection pressure required for different items.
The transformer T2 will step down the 380V AC and the secondary output will be about 15V AC. After being rectified by the rectifier bridge UR, it will provide DC power to the low water level protection circuit.
When the water level in the water tank is lower than the lower limit. The switch S5 of the low water level conductive column is closed, the triode VT2 is cut off, the VTlb pole potential is approximately ground potential, and VTl is turned on. Relay K1 is closed, normally open contact K1-1 is closed, relay K2 coil is turned on, relay K2 is closed, normally closed contact K2-2 is disconnected from AC contactor KMl coil power supply, normally open contact KMl-l, KMl-2, KMl-3 is disconnected, and the electric heaters EHl, EH2, and EH3 are turned off. Avoid the occurrence of failures such as dry burning and fire caused by heating at low water levels. At the same time, the normally open contact K2-3 is closed, and the low water level lamp HL5 is on, and a prompt is issued. The K2-1 normally open contact is closed to supply power to the relay K2 for self-holding. When the water level returns to normal, it must be checked by the staff. When confirming that it is not a false water level, press the low water level reset button SB. The relay K2 is powered off and released from the holding contact K2-l. After the normally closed contact K2-2 is closed, the sterilizer can start working again.
Second, YXQ-LS-70A vertical pressure steam sterilizer use precautions
1. Before use, check that the power supply is normal and fill the water tank to the rated water level. Usually the water level should be in the middle of the high and low water level lines to avoid hydration in the middle. After the disinfectant is placed in the pot, close the door and lock it.
2. Rotate the band switches S1, S1-1, Sl-2, turn on the power of the control indicating circuit, and the power indicator HL6 is on.
3. According to the need of pressure and temperature of the disinfection article, continue to rotate the band switch S1 and select the appropriate pressure block. At this time, the corresponding pressure selection indicator HL1 (or HL2, HL3) is illuminated by S1-3. The corresponding pressure selection switches S2, S3, and S4 turn on the KM1 AC contactor coil 380V power supply through S1-4, and KMl pulls in. The electric heater begins to heat the water in the tank.
4. When the pressure and temperature in the sterilizing pot reach the setting value, the timing starts. After the disinfection time arrives, the power is cut off, the drain valve is opened, and the remaining water vapor in the sterilizing pot is discharged, and the pressure gauge indicates zero. The disinfection pot door can be opened and the disinfected items removed.
5. When the low water level alarm light is on. The water level should be checked to confirm that the water level should be replenished to the water tank when the water level is below the lower limit. The hydration is over. Pressing the low water level reset button SB will resume the work, but the disinfection time needs to be recalculated. It is therefore important to check the water level before disinfection begins. It is necessary to ensure that the water level before the disinfection is in the middle of the high and low water level lines and that the pipeline has no leakage.
6. Pressure gauges and safety valves for sterilizers should be inspected by the quality inspection department every six months, and problems should be eliminated in time. When the seal ring is aging, it should be replaced in time to ensure the disinfection effect.
1. Before use, check that the power supply is normal and fill the water tank to the rated water level. Usually the water level should be in the middle of the high and low water level lines to avoid hydration in the middle. After the disinfectant is placed in the pot, close the door and lock it.
2. Rotate the band switches S1, S1-1, Sl-2, turn on the power of the control indicating circuit, and the power indicator HL6 is on.
3. According to the need of pressure and temperature of the disinfection article, continue to rotate the band switch S1 and select the appropriate pressure block. At this time, the corresponding pressure selection indicator HL1 (or HL2, HL3) is illuminated by S1-3. The corresponding pressure selection switches S2, S3, and S4 turn on the KM1 AC contactor coil 380V power supply through S1-4, and KMl pulls in. The electric heater begins to heat the water in the tank.
4. When the pressure and temperature in the sterilizing pot reach the setting value, the timing starts. After the disinfection time arrives, the power is cut off, the drain valve is opened, and the remaining water vapor in the sterilizing pot is discharged, and the pressure gauge indicates zero. The disinfection pot door can be opened and the disinfected items removed.
5. When the low water level alarm light is on. The water level should be checked to confirm that the water level should be replenished to the water tank when the water level is below the lower limit. The hydration is over. Pressing the low water level reset button SB will resume the work, but the disinfection time needs to be recalculated. It is therefore important to check the water level before disinfection begins. It is necessary to ensure that the water level before the disinfection is in the middle of the high and low water level lines and that the pipeline has no leakage.
6. Pressure gauges and safety valves for sterilizers should be inspected by the quality inspection department every six months, and problems should be eliminated in time. When the seal ring is aging, it should be replaced in time to ensure the disinfection effect.
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