Summary table of maintenance points for induction melting furnace

Maintenance and repair items		Maintenance and repair content	Maintenance time and frequency	Remark
Oil Pressure Pack Set	Pump	Check whether the noise of the pump is abnormal	1 time / week	When the pump is noisy , there are the following reasons : (1) Air is sucked in by the suction filter (2) The suction side of the pump sucks in air
	Pressure regulating valve	(1) When there is a time lag from the start of the pump to when the pressure rises and when the noise of the pressure regulating valve increases , disassemble the pressure regulating valve for cleaning (2) When the tilting speed is too slow , increase the setting of the pressure regulating valve within the maximum operating pressure range of the device . The set pressure does not rise , remove it for cleaning
	Pipe filter	Disassemble the filter for cleaning Exchange parts	The first time is one month , and then one time /3 months 1 time /2 years
	Piping Emergency generator Petrol Engine Hand pump	Visually check for oil leaks on the piping Prevent rust , start the engine pump Check according to the attached check book Take measures to prevent rust and start the hand pump	1 time / month 1 time / month 1 time / month
Blower	Fan belt	Whether the belt is slack Whether the belt is broken	The first time is one month , afterwards 1 time /6 months
	Air filter	Visually check the vacuuming status and clean with compressed air in the workshop	1 time / month
	Noise, vibration	Is the noise and vibration of the blower different from usual?	1 time / week
	Add lubricating oil	Blower bearing	1 time /3 months
Cooling water circuit	Cooling water pump	(1) Bearing temperature and motor housing temperature (2) When there is water leakage in the pump bearing , reinforce the bearing (3) Is the noise and vibration of the motor and pump different from usual? (4) After a long period of operation , or when the operation is stopped in winter or at night , the remaining water should be removed (5) Wear of gland sealing electricity	1 time / week 1 time / month 1 time / month 1 time /1.5 ～2 years
Cooling water circuit	Cooling Tower	(1) Clogging of the nozzle (2) The dirt of the filter : Clean or replace when the contamination is serious (3) Whether the fan belt is loose (4) Add lubricating oil to fan bearings	Initially for a check once a month , after 1 times / 3 months 1 time /3 months	Check whether the nozzle is blocked from the inspection window during operation
Maintenance and repair items		Maintenance and repair content	Maintenance time and frequency	Remark
Cooling water circuit	Cooling water circuit	(1) Is the flow of the flow meter different from usual (2) Clean the filter (3) Water pressure gauge Whether the alarm value is normal and the pressure indication is different from usual (4) Thermometer Whether the thermometer indicates normal Whether the alarm contact point is abnormal (5) Piping Whether the piping is leaking	1 time / day 1 time /3 months 1 time / week 1 time / month 1 time / week 1 time / day
Cooling water circuit	Emergency equipment	(1) Gasoline engine pump Run once a week , one time is half an hour (2) The gasoline engine is inspected according to the attached inspection book (3) Emergency solenoid valve	1 time / week 1 time / day
Leaking furnace alarm device	Electrode lead wire inspection	(1) Is the electrode lead wire connection normal? (2) Is the electrode lead wire grounded?	1 time / day	Check with test stick
Leaking furnace alarm device	Coil check	When dismantling the furnace : Whether the coil is burnt out due to molten metal Whether there are bumps in the coil Whether the coil is damaged		It is appropriate to fill in the coil insulation with asbestos plaster and the renewal period is 3 to 5 years.