Howden Roots Air Blower URAI 22

Lubrication — How to properly determine the oil service intervals

Check ambient temperature and discharge temperature

Determine oil viscosity grade based on temperature

Verify oil temperature does not exceed 195°F (90°C)

Remove the breather plug (25) and the oil overflow plug (21)

Fill the reservoir up to the overflow hole

Ensure the reservoir is not overfilled

Place the breather and the overflow plug back into their respective holes

Lubrication — For Units with grease lubricated drive end

Select the operating speed range

Enter the operating hours per day

Use the specified NLGI #2 premium grade aluminium complex grease, Roots P/N T20019002

Ensure no lithium based grease is used

Technical supplement for URAI-G Gas blowers — Lubrication

Check hydraulic pressure relief fittings for venting excess grease

Ensure restriction plug and metering orifice are in place

Use a pressure gun to slowly force new lubricant into each drive end bearing housing

Lubrication — How to properly determine the oil service intervals

Check ambient temperature and discharge temperature

Determine oil viscosity grade based on conditions

Use Roots synthetic oil of correct viscosity per Table 2

Remove the breather plug (25) and the oil overflow plug (21)

Fill the gearbox reservoir up to the overflow hole

Ensure the reservoir is not overfilled

Place the breather and the overflow plug back into their respective holes

Lubrication — How to properly determine the oil service intervals

Determine the oil service intervals based on conditions

Select the correct oil viscosity grade based on conditions

Use Roots synthetic oil of correct viscosity per Table 2

Remove the breather plug (25) and the oil overflow plug (21)

Fill the reservoir up to the overflow hole

Ensure the reservoir is not overfilled

Place the breather and the overflow plug back into their respective holes

Lubrication — For Units with grease lubricated drive end

Verify the following conditions

Use specified NLGI #2 premium grade aluminium complex grease, Roots P/N T20019002

Ensure no lithium based grease is used

Technical supplement for URAI-G Gas blowers — Lubrication

Check hydraulic pressure relief fittings for proper venting

Ensure restriction plug and metering orifice are in place

Use a manual pressure gun to lubricate drive end bearing housing

Use specified NLGI #2 premium grade aluminum complex grease, Roots P/N T20019002