Curtis-Toledo Oil-Injected Rotary Screw Compressor RSB 20

Clean the exterior surfaces of the filter canister

Loosen the wing nut and remove the air filter cover

Remove the element and clean the interior surfaces

Inspect and/or replace the element

Replace the cover and retighten the wing nut

Sign off on the air filter replacement

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

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

Unit shut down and power disconnected

Lockout and tag applied to prevent accidental restarting

Waited one minute after compressor stop for pressure relief

Cleaned the dirt from around the fill plug

Loosened the fill plug and relieved additional pressure

Removed the drain plug from the end of the drain line at the bottom of the separator tank

Opened the ball valve and allowed the oil to drain

Closed the ball valve and replaced the drain plug after oil completely drained

Refilled with FS CURTIS LUBERPLUS FSC8000 Compressor lubricant

Change the oil filter element after the first five hundred (500) hours of operation. Then under any of the following conditions: Every six (6) months or two thousand (2000) hours whichever occurs first Every lubricant change When differential pressure gauge reads 15 PSID.

Change as follows: (Ref. Figure 5-4)

Shut down the unit, disconnect the power, lockout and tag to prevent accidental restarting.

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

Using a strap wrench remove the old filter from the filter head.

Clean the gasket contact surface on the inside of the filter head.

Apply a light film of the compressor oil to the gasket surface on the new element.

Hand tighten the new element until the gasket is seated in the gasket groove.

Continue tightening the element by hand an additional ½ to ¾ turn.