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                                                    Vacuum dryer used for inspection and debugging work is very important
                                                       1 vacuum dryer using environment:
                                                      A): temperature 5 ~ 40 ℃
                                                      Relative humidity: 85%RH b)
                                                      C) power supply voltage: AC220V ± 10% 50Hz
                                                      D) around without strong vibration and corrosive gas effect
                                                      2 vacuum dryer, vacuum pumping debugging:
                                                      A) the vacuum drying box door and door handle is screwed in place, close the bleeder valve (the valve hole and the rubber plug on the Kong Niupian 90 °), open the vacuum valve (by the counterclockwise rotation of 90 °), the first use of possible vacuum valve switch is tight, be forced rotation.
                                                      B) with random accessories vacuum connecting tube (diameter: diameter 16mm wall thickness: 10mm) the vacuum dryer exhaust tube (diameter: diameter 16mm) and vacuum pump (2XZ-2 type, inlet diameter 16mm) firm connection (6090 and 6210 are connected well.). Connect vacuum pump power, began pumping gas, when the vacuum table indicating value reaches -0.1Mpa, first close the vacuum valve closed vacuum pump power, to prevent the vacuum pump oil to flow back into the studio, (6090 and 6210 non vacuum valve, can be directly closed panel vacuum pump power) at vacuum dryer is in a vacuum state.
                                                      Phenomenon 1 -- vacuum pump can't vacuum tank, vacuum degree of 0
                                                      Analysis.
                                                      1, vacuum dryer vacuum vent valve is closed or shut;
                                                      2, vacuum pump connection reverse, reverse the formation;
                                                      3, the vacuum pump for water circulation pump, because there is no enough water for use, and can't vacuum;
                                                      4, the existence of defects using vacuum pump;
                                                      5, the box door tightly locking.
                                                      The vacuum dryer in pumping phenomenon -- to a certain value, not to the more high vacuum pumping phenomenon
                                                      Analysis.
                                                      1, the vacuum dryer problems, the existence of small holes inside the box, this vulnerability is very difficult, but possible, the vacuum pump to a certain extent cannot continue.
                                                      2, the vacuum pump for water circulation pump, water pump can be pumped to the 0.08MPa above, better able to get 0.09MPa, cannot again to the vacuum degree
                                                      3, may cause the vacuum pump matching problems, vacuum pump can't match the vacuum box work size, such as a vacuum pump power is too small, and vacuum dryer is great;
                                                      Debugging 3 vacuum dryer:
                                                      In the vacuum after commissioning, operation can be made as follows:
                                                      A) open the vacuum dryer power supply, the power indicator light Ying Liang (6090 and 6210 should then open temperature controller switch) temperature control instrument power on self test, PV screen display to measure the temperature of indoor, SV screen display factory set temperature. Temperature controller AT and HEAT lamp Ying Liang, said instrument into the heating working condition.
                                                      B) to modify the setting temperature:
                                                      1 press the function key is controlled by a temperature of (SET); PV display SP characters, use the arrow buttons to set the temperature changes (6090 and 6210 on the 2 and 3 meter shall be respectively set modification, similar).
                                                      2 after modification, then press the SET key, PV screen display ST characters, setting time. If not using the timing function, still let it ST=0.
                                                      3 then press the SET key, the PV screen display of room temperature, SV display temperature setting new. Instrument AT and HEAT lights, the instrument back into the heating working condition.
                                                      C studio) when the temperature is close to the set temperature, the HEAT lamp flickered, said heating into the PID adjustment stage, instrument sometimes measuring temperature exceeds the set temperature, sometimes below the set temperature is normal. When the measured temperature is close to or equal to the set temperature, the temperature into the state for 1~2h studio, items into the drying stage.
                                                      D) the required temperature is low, can use two setting mode, such as the required working temperature of 70 ℃, 60 ℃ first set, etc. the temperature overshoot began to fall, salt fog test box, and then the second set of 70 ℃, which can reduce or even eliminate the temperature overshoot phenomenon, in constant temperature the state as soon as possible.
                                                      E) when the goods after drying, shut the power supply, if the accelerated cooling, then open the bleeder valve so that the vacuum degree is 0, for 5 minutes and then open the door.
                                                      4 if the dry matter in the studio humidity is bigger, the water vapor will affect the performance of the vacuum pump, suggest that between vacuum dryer and vacuum pump, string into a "dry / filter". Our company can according to need to be matched with a shape size of Φ 120 × 300mm, interface diameter Φ 16 dryer.
                                                      5 if in dry goods, need to add nitrogen and other inert gas, should be specified in the contract, with an inlet valve.
                                                      Note: 1 if the vacuum pump in normal and in accordance with the technical requirements, not the vacuum, then open the door of the safe use of products in the annex to the board hand on the box door to twist a circle of the adductor brevis, to close the door. 2 the vacuum dryer can not be used as an electric vacuum dryer, vacuum dryer, because the studio not in a vacuum, temperature measurement and actual indoor temperature error greatly.
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