Curtis-Toledo Oil-Injected Rotary Screw Compressor RSB 50

Warning: Do not operate the compressor with the fan or belt guard removed. Exposed fan and belts can cause injury to personnel.

DANGER: Before performing any maintenance be sure the electrical supply has been cut off, locked and tagged and that all pressure has been relieved from the compressed air system.

Disconnect the power, lock out and tag out, and allow all pressure to be relieved.

Inspect for any fraying or cracking. If found replace the belts.

Check the tension. The deflection should be about 1/64” per inch of span between the sheaves with about 4-6 pounds of downward force.

To adjust the tension, loosen the bolts holding the motor to the slide base and using the take-up bolts move the motor until the belts are tight per number 4 above, then retighten the motor bolts.

Replace the belt guard and return the compressor to service.

Sign off on the weekly drive system belt check

Warning: This maintenance check requires trained personnel with PPE!

Enter the current hours of operation

Shine a bright light through the element from the inside to inspect for damage. If cracks or pinholes are detected, discard the element.

If element(s) appear in good condition return them to the filter housing per previous filter replacement instructions.

Sign off on the air filter maintenance

Check pressure relief valve for operation

Check all electrical connections

Inspect/clean finned surface of radiator(s)

Inspect hoses for signs of wear

Sign off on the weekly maintenance

Warning: For trained personnel only

Switch off the unit; disconnect the power and lockout and tag to prevent accidental restarting.

Allow one (1) minute after the compressor stops for the pressure to be relieved.

Lay the straight edge across the face of the motor sheave and check the alignment with the face of the air end sheave.

Then lay the straight edge across the face of the air end sheave and check the alignment with the face of the motor sheave.

If the alignment is greater than 1/16” in either direction, as shown in Figure 5-9, loosen the belts as outlined in “Changing the belts” section and align the sheaves.

Reset the tension on the belts.

DANGER: Hot oil under pressure can cause severe injury, death and/or property damage. Be sure the compressor is shutdown and the pressure is relieved before attempting to change or add lubricant.

Waited one minute after compressor stop

Observe the lubricant level. It should be at the center of the sight glass.

Power disconnected, lockout and tag to prevent accidental restarting

Cleaned dirt from around the fill cap

Loosened the cap and made sure any additional pressure is relieved through the vent holes, then removed.

Added lubricant to the proper level

Replaced cap and tightened securely