10. The process chemicals will pollute the pump and pump oil when the pump is working.
Decontaminate the pump after maintenance if there is contamination as well as adopt
necessary precaution to protect personnel.
11. Ensure the stability of protective device before restart the pump.
6.2 The maintenance plan
Table (2) shows the routine maintenance plan for the vacuum pump. If the vacuum pump
often inhale and exhaust corrosive gases or the gas ballasting controller connects with
atm. all the time, maintain the pump more often. Adjust the maintenance plan if
necessary.
Operation items
Period
Check oil level
Every week
Replace oil
Every 6 months
Replace gas ballast filter
Every 3000 hours
Check and clean air inlet filter
Every year
Clear the cover of motor
Every year
Clean and overhaul the pump
Every year
Test the motor
Every year
Replace the vanes
Every 3 years
Table 2 Maintenance plan
6.3 Check the oil level
1. Check the oil level regularly when the pump is running. Halt the pump before adding
oil.
2. Adding oil timely when the oil level is near or below the minimum oil level. Drain the
redundant oil if the oil level exceed the maximum level.
3. If the pump oil is contaminated and can
’t be cleaned, which affecting the performance
of the pump, replace the oil.
6.4 Replacement of the oil
1.
Start the pump for 10 minutes to preheat the oil (
Reduce the viscosity of the oil to
make it easy to flow out), then halt it.
2.
Cut off the power. Isolate the pump from the vacuum system.
3.
Remove
oiling plug screw
.
4.
Put a proper container under the drain port and remove the drain plug screw so that
