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E-mail
13983621392@163.com
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Phone
13983621392
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Address
No. 1, 27th Floor, Building 17, Yajule Yubin Mansion, No. 198 Shuangcheng Road, Dadukou District
Chongqing Tongrui Filter Equipment Manufacturing Co., Ltd
13983621392@163.com
13983621392
No. 1, 27th Floor, Building 17, Yajule Yubin Mansion, No. 198 Shuangcheng Road, Dadukou District
Maintenance and upkeep procedures for vacuum oil filters and vacuum pumpsguidance
****Chapter 1: General Provisions**
**1.1 Purpose**
This regulation is formulated to standardize the daily operation, testing, maintenance, and upkeep of vacuum oil filters and their core components (vacuum pumps), ensure the continuous and stable operation of the equipment, extend its service life, and guarantee the quality of oil treatment and the operation of personnel.
**1.2 Scope of Application**
This regulation applies to the maintenance and management of all two-stage vacuum oil filters and their supporting vacuum pumps in use by the company.
**1.3 Maintenance Classification**
Maintenance work is divided into three levels:
** * Daily inspection * *: Conducted by operators before each startup, during operation, and after shutdown.
** * Regular maintenance * *: Implemented by maintenance personnel according to weekly, monthly, quarterly, and annual plans.
** * Shutdown maintenance * *: It is performed before the equipment is put into use after long-term shutdown or major repairs.
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Chapter 2: Maintenance Requirements for Double stage Vacuum Oil Filter Body**
system |
project |
Technical Requirements |
Maintenance Type |
Method and Remarks |
1、 Vacuum system |
1. 真空度 |
Steady state vacuum degree ≥ 0.095 MPa (* * vacuum) |
Daily inspection |
Record and observe fluctuations after stable operation of the equipment. |
2. System sealing |
Raise the pressure to 0.1 MPa (gauge pressure), hold for 5 minutes, pressure drop ≤ 2% |
Monthly/Regular |
After replacing the main seal, it must be tested. Use a precision pressure gauge. |
|
3. Vacuum pump oil level/quality |
The oil level is within the calibration scale range (± 5mm); The oil is clear in quality, without emulsification or blackening |
Daily inspection |
Add oil promptly if the oil level is insufficient; Replace immediately if the oil quality is abnormal. |
|
2、 Filtering system |
1. Filtering accuracy |
Particle size of export oilDoes it meet the technical requirementsContractual agreement |
Batch/Monthly Validation |
Conduct laboratory testing on export oil samples. |
2. Integrity of filter element |
No damage, misplaced folding layer, intact and elastic sealing ring |
Check during replacement |
When there is a pressure difference alarm or replacement due to expiration, it must be carefully checked. |
|
3. Differential pressure of filter element |
When the pressure difference is ≥ 0.3 MPa, an alarm will be triggered and the machine will automatically shut down |
Daily inspection/monthly testing |
Record the initial pressure difference, and a continuous increase in pressure difference indicates blockage. |
|
3、 Heating system |
1. Temperature control accuracy |
Set temperature fluctuation within ± 3 ℃, response time ≤ 2 minutes |
Daily inspection |
|
2. Overtemperature protection |
Alarm and shutdown when temperature ≥ set value+10 ℃ |
Monthly testing |
Functional testing must be conducted monthlyTo prevent the heater from burning dry. |
|
3. Heating uniformity |
The temperature difference between any two points inside the fuel tank is ≤ 5 ℃ |
Verify every six months |
Use an external high-precision thermometer for multi-point measurement. |
|
4、 Control system |
1Operational logic |
The program/manual mode switching is normal, with no crashes or misoperations |
Daily inspection |
|
2. * * Interlocking |
Interlocking between vacuum pump and heating system; Emergency stop button responds within 1 second |
Monthly testing |
**Test interlocking logicThe vacuum pump does not start, and the heater cannot start. |
|
5、 Auxiliary system |
1. Performance of circulating pump |
Head ≥ 95% of contract value, flow error ≤ 5% |
Regular evaluation |
Indirectly judged through system pressure and flow meter. |
2. Waste liquid collection system |
Capacity up to standard, no leakage, sensitive liquid level alarm |
Daily inspection |
Clean up the waste liquid in a timely manner and test the liquid level switch. |
**Chapter 3: Technical Requirements for Special Maintenance of Vacuum Pumps**
system |
project |
Technical Requirements |
Maintenance Type |
Method and Remarks |
1、 Motor system |
1. Insulation resistance |
Under cold conditions, ground and phase to phase ≥ 100 M Ω |
Annual/After Major Maintenance |
Use an insulation resistance tester (megohmmeter). |
2. Temperature rise during operation |
Continuous operation for 30 minutes, shell temperature ≤ 80 ℃ |
Daily inspection/regular inspection |
Use an infrared thermometer to monitor the temperature rise trend. |
|
3. Vibration and abnormal noise |
Vibration speed ≤ 2.5 mm/s; No abnormal noise |
Daily inspection/monthly |
Use a vibrometer and auscultate based on experience. |
|
2、 Pump body system |
1. Extreme vacuum degree |
Achieve equipment design parameters |
Annual Performance Test |
Close the pump port and test the maximum vacuum it can achieve. |
2. Leakage rate |
System leakage rate ≤ 0.1 Pa/s (24-hour test) |
Annual/After Major Maintenance |
Closed system, measure the rate of pressure rise per unit time. |
|
3. Vibration and noise |
Vibration ≤ 3.0 mm/s; Noise ≤ 75 dB (A) |
Monthly/Regular |
Vibration instrument measurement; Measure at a distance of 1 meter from the pump body using a decibel meter. |
|
3、 Sealing system |
1. Leakage of shaft seal |
Oil leakage ≤ 0.5 mL/24h (mechanical seal) |
Daily inspection/regular inspection |
Weighing method or visual observationIf dripping is found, it needs to be dealt with. |
2. Pressure resistance of sealing components |
Tested under 1.2 times work pressure, with no visible leaks |
After replacing the seal |
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4、 Cooling system |
1. Cooling water flow rate |
≥ 90% of the design flow |
Daily inspection (water cooling) |
Observe the flow meter or the temperature difference between the inlet and outlet. |
2. Temperature of radiator |
≤ upper limit of working temperature (such as 90 ℃) |
Daily inspection (air-cooled) |
Scan the heat sink with an infrared thermometer. |
|
5、 Control and** |
1. Pressure display accuracy |
Compared with a standard vacuum gauge, the error is ± 1% of the full range |
Annual verification |
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2. Automatic start stop/alarm |
No delay response; Accurately alarm and shut down when simulating faults |
Monthly testing |
Artificially simulating faults such as overload and overheatingVerify the protection function. |
|
3. Overload protection |
Motor stalling within 30 seconds, automatic shutdown and alarm |
Monthly testing |
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4. Emergency stop button |
Immediately cut off the power source after triggering, without delay |
Monthly testing |
Test all emergency stop buttons. |
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####Chapter 4: Maintenance Records and * * Instructions**
**4.1 Record requirements**
All daily inspections, regular maintenance, test results, and troubleshooting must be recorded in detail in the "Equipment Maintenance Record Form" to form a traceable equipment file.
**4.2 * * Notice**
Before operation, it is necessary to confirm that the equipment is reliably grounded and the electrical circuit is not damaged.
2. * * During operation * *: It is strictly prohibited to open pressure bearing components such as vacuum tanks and pneumatic valves.
3. Heating: It is strictly prohibited to start the heater when there is no oil circulation or vacuum has not been established.
4. * * During maintenance * *: The power must be cut off and a warning sign reading "Do not close, someone is working" must be hung to fully depressurize the system.
5. Oil treatment: Wear protective gloves when in contact with oil products, and recycle waste oil according to regulations to prevent environmental pollution.
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The above information is the integrated regulatory structure, emphasizing testing verification and * * measures, hoping to provide strong support for your equipment management work.