German Leybold vacuum pump failure How to troubleshoot: German Leybold vacuum pump failure German Leybold vacuum pump failure Possible causes German Leybold vacuum pump troubleshooting methods Note * Germany Leybold vacuum pump can not start the pump connection error correctly connected to the pump 2.3 motor protection switch settings are not correct Set motor protection switch 2.3 Operating voltage does not match with motor Replace motor Motor Replace oil Motor temperature is lower than 12 ° C (54 ° F) Heat pump and pump oil or oil of different grades 1.8 Oil viscosity too high Use a suitable grade of oil 3.3 Exhaust filter / exhaust line is clogged Replace filter or purge exhaust line 3.4 Pump is stuck (phenomenon: pump stuck) Service pump 3.11 / 3.12 German Leybold vacuum pump can not reach the measurement method or regulation Improper use of the correct measurement methods and regulations 2.7 Germany Leybold vacuum pump pressure limit external leakage -1) - loose pipe fittings Inspection pump - re-tighten the fittings Float valve does not matter Repair valve 3.9 Anti-back valve failure Repair valve 3.6 Valve Failure Repair Valve 3.10 Germany Leybold vacuum pump is bad Lubricant is not used or the oil is contaminated Replace the oil (if necessary degassing) 3.3 - clogged oil filter Change the oil filter - the oil line is blocked Clean the oil line and the tank vacuum line too dirty Clean Vacuum line pump too small If necessary, replace the pump according to the process Germany Leybold vacuum pump pumping speed is too low Imported filter clogged Clean the filter 3.5 Measures: Install a dust filter in the intake pipe 1.4 / 2.2.1 Exhaust filter clogged Install new filter element 3.4 Connecting pipe Diameter is too small or too long Use large diameter and short connecting pipe 2.2 Anti-re-oil valve difficult to open Check the degree of freedom of the spring Leybold vacuum pump in the vacuum system leaks Check the system Parking Anti-back valve failure to repair the valve 3.6 Germany Leybold vacuum pump system pressure rise quickly Germany Leybold vacuum pump is too hot Air-cooled system is poorly placed Correct pump 2.1 cooler dirty cleaning cooler 3.8 Ambient temperature is too high Correct placement of the pump 2.1 process gas is too hot Change process oil level is too low Refueling to normal level 3.3 The oil used is not the right to replace the oil 3.3 oil circulation clogged cleaning or overhaul oil pipeline exhaust filter / exhaust line blocked replace the exhaust filter, exhaust line cleaning exhaust valve failure 3.4 repair valve 3.10 pump life has been to replace Pump core 3.11 Germany Leybold vacuum pump oil into the intake pipe or into the vacuum container oil From the vacuum system Check the vacuum system 3 Anti-return valve plugging Clean or repair anti-return valve 3.6 Anti-return valve sealing surface is damaged or dirty Clean or Overhaul air intake and anti-return valve 3.6 Excessive oil level Relieve excess oil 3.3 Germany Leybold vacuum pump consumes too much oil, there is oil mist at the outlet Exhaust filter clogged or damaged Replace the filter 3.9 Float valve Oil plug is blocked Check the valve, clean the oil Tsui 3.3 The oil level is too high Put away the excess oil, oil degassing or oil change, wash the pump 2.5.2 / 3.2.2 Condensation method: Open the gas ballast valve or installed in the intake pipe Condenser cleaning gas into the air filter 3.7 Germany Leybold vacuum pump noise is too high (see Oil) 3.3 fuel oil filter clogging and replacement of the oil filter mounting pad wear 3.3 Coupling mat new coupling system produces 3.11 vacuum leak repair direct air leakage 3.11 / 3.12