Desktop vacuum drying oven troubleshooting
Possible troubles in the process of using desktop vacuum drying oven and its treatment Fault phenomenon Reasons Approach No power on boot No power outlet Check if the line is tripped and the outlet is good The power cord plug is not plugged in or disconnected Reinsert or repair the power cord Fuse tube is not installed or broken Check the vacuum box circuit no short circuit, more fuse tube (instrument power transformer short circuit, the heater short circuit, grounding short circuit causes the fuse to blow). Instrument PV screen display " □ □ □ □ †The temperature sensor Pt100 is bad Check Pt100 for replacement ( 0 °C to 100 Ω , 0.3 Ω / °C ) Temperature sensor wiring disconnected Reconnect Instrument measurement range is wrong Reset Do not warm up Low temperature setting Set temperature SV ≥ RT+10 °C RT is (ambient temperature) The output circuit of the instrument is disconnected Reconnect Temperature controller has no output signal or bad or SCR bad Exchange Electric heater bad (open circuit, short circuit) Exchange Do not warm up Enable timing or incorrect settings ST=0 or ST= (heating + constant temperature) time Temperature out of control or set temperature and measurement temperature error overshoot resulting in static error, overshoot Temperature controller output is out of control 3041 or bad BTA , exchange Does not meet the conditions of use SV ≥ RT+10 °C Pt sensor bad contact Clear contact resistance The relevant parameters are set incorrectly Reset the relevant parameter example P, etc. Measuring temperature and The actual temperature in the box is too bad No vacuum Vacuum degree Measure the mercury temperature sensor on the shelf Reposition Instrument or parameter changes Re-correct SC , HL parameters Can't vacuum Vacuum pump selection model specifications are wrong Should choose pumping rate not less than 2 liters per second Various connection tubes (heads) are loose and the inner diameter is too small Re-select the appropriate inner diameter connecting pipe, fastened at the joint Vacuum table is bad replace The door is not closed Adjust the buckle distance Door seal rubber aging loses its elasticity Replace door seal Vent valve, vacuum valve position is wrong Adjust position Fault phenomenon Reasons Approach Can't vacuum Bad solenoid valve ( 6090 , 6210 ) Replace solenoid valve Leakage ( 24 hours vacuum From -0.1Mpa to Greater than -0. 092Mpa ) Various connection pipe leaks Replace after inspection In addition to type 6050 , 6050B , 6051 and 6053 , the deformation of the heater “ O †type seal ring is not compressed. Tighten the heater base with the Allen key (on the back of the liner) or replace the " O " ring The valve is not positioned correctly Place the correct position Vacuum valve leak Exchange Solenoid valve leaks tightly (for type 6090 , 6210 ) Exchange
Depending on various design, the oil-gas filter is composed of different layers. The first layer is typically coalescence layer, which is made of borosilicate glass fibers with a certain thickness and porosity, multilevel submicron glass fiber ensures at higher temperature to capture the tiny droplets of different lubricants efficiently. The second layer is separation layer, the large coalesced oil droplets go to bottom groove by separating layer.
If pre-separation of the oil filtration barrel is poor, the pre-separation filter layer is added to the outermost layer to prevent the coalescence layer overload and prolong life.
According to the requirements of the chemical industry and commerce association, the metal parts with oil and gas separation filter of the compressor has conductive connection, in order to reliably conducting static load. The appropriate sealing gaskets are selected ensuring a conductive connection to the compressor body.
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