Sanyo sterilizer "Tsinghua University" after-sales repair station

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< : Sanyo: When stacking sterilization items, it is strictly prohibited to block the air outlet of the steam release valve. Space must be left to ensure that the equipment can deflate smoothly. Otherwise, the safety valve will not work due to the blockage of the air outlet, causing an accident.
Before each use of the autoclave, Sanyo must check whether the water volume in the sterilization barrel is maintained at the foot rest.
. When sterilizing liquids, the liquid should be canned in a hard heat-resistant glass bottle with a volume not exceeding 1/2. Use a cotton gauze stopper for the bottle mouth. Do not use unperforated rubber or cork stoppers.
< :Sanyo Sterilizer After-Sales Hotline:
< :Sanyo Special Note: Do not release steam immediately when the sterilization liquid is finished, and you must wait until the pressure gauge pointer returns to zero before releasing the remaining gas.
.Do not put different types of items with different sterilization requirements, such as dressings and liquids, together for sterilization to avoid losing sight of one and causing losses.
. When the autoclave is finished sterilizing, the pointer of the pressure gauge must return to zero and the steam release valve should be placed in the steam release position. Let outside air enter the autoclave and the container lid can be opened after the vacuum is eliminated.
. After the pressure gauge of the autoclave has been used for a long time, the pressure indication is incorrect or cannot return to zero, it should be repaired in time. It should be compared with the standard pressure gauge regularly. If it is abnormal, it should be replaced with a new gauge.
.The autoclave should be kept clean and dry at ordinary times to extend its service life. The rubber sealing gasket will age over time and should be replaced regularly.
Add water: first close the drain valve and adjust the main valve to full drain. Then open the water inlet valve and put distilled water into the steam generator. When the water reaches about ~ ~ from the top of the water meter, close the water inlet valve and turn the main valve to closed.
. Loading the pot: Put the items to be sterilized into the pot. Be careful not to stuff them too tightly or too full. The Erlenmeyer flask and test tube containing the culture medium should be placed upright or moderately tilted. To prevent culture medium from contaminating the cotton plug during the sterilization process.
. Close the door: Turn the locking handle clockwise to the red arrow to allow the stopper to enter the door ring. Then rotate the octagonal turntable to make the door and gasket close enough to prevent air leakage during sterilization. It should not be too tight to avoid damaging the gasket.
. Power on and heat: Turn the knob of the power control switch to the open position. The power indicator light turns on to indicate that the power is on. Then press the sterilization steam pressure required to sterilize the items and turn the rotary cutter to . or . At this time, the electric heating indicator light lights up to indicate that electric heating is on.
. Heat preservation and pressure preservation: When the steam in the steam jacket reaches the automatic control pressure with heating, the electric heating indicator light will turn off in vain to indicate stopping of heating. As the heat dissipates and the pressure decreases, the electric heating indicator light lights up again to indicate continued heating, which indicates that the pressure controller is working properly. When the steam in the jacket is heated to the selected control pressure, the steam in the jacket can be introduced into the sterilization chamber for sterilization. At this time, the condensation valve in front of the vapor-liquid separator should be opened slightly, and then the main valve should be adjusted to the sterilization jacket. The steam in the sterilization jacket will enter the sterilization chamber through the main valve for disinfection, and the condensate water will be automatically discharged through the vapor-liquid separator. At this time, the steam pressure in the steam jacket drops rapidly and the steam pressure in the sterilization chamber gradually rises. The thermometer in the sterilization chamber also rises as the items are heated by the steam. When the temperature of the table rises to the required sterilization temperature (usually ℃), start calculating the sterilization time and maintain the temperature until the sterilization is completed.
, out of the pot: immediately cut off the power after sterilization is completed. Determine whether the steam in the sterilization room is naturally cooled or slow discharged or quickly discharged according to the nature and requirements of the sterilized items, such as instruments, utensils, solid materials, soil, peat, etc. For items that will not be affected by a sudden drop in pressure, the main valve can be directly adjusted to slow discharge or fast discharge to quickly discharge the steam in the sterilization room. When the pressure in the disinfection chamber drops to r, you can slowly turn the pot door turntable and turn the locking handle to open the door. After removing the sterilized items, the sterilized items will be relatively dry. When the sterilization of solutions, culture media and other items is completed, the main valve can only be adjusted to slow discharge to slowly discharge the steam in the sterilization chamber to avoid sudden pressure reduction and violent boiling of the culture medium. You can also close the main valve after sterilization is completed to allow the sterilized items to cool down naturally. When the disinfection treasure pressure gauge drops to r, then adjust the main valve to slow discharge for a few minutes and take out the sterilized items.
Continuous operation: If there are many sterilized items that require continuous operation, the water level should be checked first. It can be used continuously when there is enough water. If you need to add water, you should adjust the main valve to full discharge, open the water inlet valve, add water and continue operation.
Maintenance: After each sterilization, turn off the power to stop heating, and then adjust the main valve to full exhaust to discharge the steam in the jacket. Open the platinum door to release a little residual steam to keep the wall of the sterilization chamber dry and eliminate the remaining water in the steam generator.
<: Precautions for use of Sanyo electric pressure steam sterilizer
. You must read the instructions carefully before use.
.The method of use is to follow the steps of adding water, stacking, sealing, heating, sterilizing, drying, cooling and finishing.
.Every time you use it, you should check the water level meter and observe the alarm indicator light to add enough water.
.Pay special attention to the conductive column in the water level meter so that it should be located in the center of the water level glass tube.
.The lifting handle of the safety valve should be lifted ~ times a week to maintain its flexible state.
.Electrical connectors should be tightened to prevent loosening and overheating.
.Should be properly grounded to ensure safety.
.Regular maintenance, cleaning, drying and inspection repairs to ensure normal operation and avoid accidents.
Principles of high-pressure sterilizers and precautions for use
--Vertical pressure steam sterilizers are widely used in hotels, hospitals and other departments to sterilize heat-resistant items. It has adjustable pressure and temperature functions and protection functions such as low water level power off and anti-dry burning. It is easy to use and has high reliability. The following briefly analyzes the working principle and introduces the precautions for use.
1. <: Working principle of Sanyo sterilizer
The sterilizer circuit consists of three parts: main circuit, control circuit and indication circuit. The main circuit consists of three-phase AC power supply through the fuse, and is added to the main contact (normally open) -, -, - power side of the AC contactor. Its load side is connected to the electric heater,,. After the AC contactor is normally closed, its main contacts -, -, - are closed. Formed connection form. The electric heater generates electricity to heat the water in the water tank. At the same time, AC power is drawn from the load side of the fuse through the fuse and band switch as the power supply for the control circuit and indicator light circuit. When the band switch is closed. -, -Connect the alternating current and divide it into two channels: one channel is added to the primary and secondary output of the transformer. AC power is used as the power source for each relevant indicator light. At this time, the power indicator light is on. The other channel is the AC power supply of the control loop, which passes through the relay - normally closed contact low water level reset button, band switch - and pressure selection travel switch (,) to the two ends of the AC contactor coil to receive electricity and pull the main contacts -, -, - to close the electric heating When the device is powered on, it starts to heat up. Heating the water in the tank. As the water temperature in the box continues to rise, the steam generated enters the sterilizer. When the steam pressure in the sterilizer reaches the set value, the pressure bellows deforms and pushes the pressure selection travel switch (or, ) to disconnect and cut off the AC contactor coil power supply to release. The normally open contact disconnects the electric heater to stop heating. The pressure selector travel switch and the switch are respectively driven by three bellows that can measure different pressures. Through the band switch-turn on the AC contactor current. Achieve the selection of sterilization pressure and temperature required for different items.
After the transformer steps down the AC, the secondary output is about AC and rectified by the rectifier bridge r to provide DC power to the low water level protection circuit.
When the water level in the water tank is lower than the lower limit specified value. The switch contact in the low-water conductive column is closed, and the cut-off electrode potential of the triode is approximately the ground potential conduction. The relay pulls in the normally open contact - closes and connects the relay coil. The relay pulls in the normally closed contact - disconnects the AC contactor coil power supply. The normally open contact -, - disconnects and cuts off the electric heater, and the power supply. Avoid malfunctions such as dry burning and fire caused by heating under low water level conditions. At the same time, the normally open contact-closed low water level light lights up to give a reminder. -The normally open contact closes to power the relay to achieve self-holding. When the water level returns to normal, it must be inspected by staff. When confirming that it is not a false water level, press the low water level reset button to turn off the power of the relay and release the self-holding contact - disconnect the normally closed contact - only after closing can the sterilizer start working again.
2.--Precautions for use of vertical pressure steam sterilizer
． Before use, check whether the power supply is normal and fill the water tank with water to the rated water level. Usually the water level should be above the middle of the high and low water levels to avoid replenishing water midway. After placing disinfectant items in the pot, close the door and lock it tightly.
． Rotate the band switch, -, - to turn on the control indicating circuit power supply indicator light.
． Continue to rotate the band switch to select the appropriate pressure level according to the pressure and temperature requirements of the disinfection items. At this time, the corresponding pressure selection indicator light (or,) will turn on. The corresponding pressure selector switch is turned on by turning on the AC contactor coil power supply. The electric heater starts to heat the water in the water tank.
． When the pressure and temperature in the sterilizer reach the set value, start timing. When the disinfection time is reached, cut off the power and open the drain valve to drain the remaining water vapor in the sterilizer. After the pressure gauge indicates zero. Only then can the door of the sterilizer be opened to take out the sterilized items.
． When the low water level alarm light is on. The water level should be checked to confirm that the water level is below the lower limit and the water tank should be replenished. End of hydration. After pressing the low water level reset button, work can be resumed but the disinfection time needs to be recalculated. It is therefore important to check the water level before starting disinfection. Make sure that the water level is above the middle of the high and low water levels before disinfection and that there is no leakage in the pipes.
． The pressure gauge and safety valve used in the sterilizer should be inspected by the quality inspection department every six months and any problems found should be eliminated in a timely manner. When the sealing ring ages and causes air leakage, it should be replaced in time to ensure the disinfection effect.