Maintenance

Maintenance

Routine maintenance is important to ensure proper operation of your sprayer. Maintenance includes performing routine actions which keep your sprayer in operation and prevents trouble in the future.

Activity

Interval

 

 

Inspect/clean sprayer filter, fluid inlet strainer, and gun

Daily or each time you spray

filter.

 

 

 

Inspect motor shield vents for blockage.

Daily or each time you spray

 

 

Fill TSL by adding through TSL fill point.

Daily or each time you spray

 

 

Inspect motor brushes for wear. Brushes must be 1/2 in.

Every 1000 gallons (3785 liters)

(13mm) minimum length. NOTE: Brushes do not wear at

 

the same rate on both sides of motor. Check both brushes.

 

 

 

Check sprayer stall.

Every 1000 gallons (3785 liters)

With sprayer gun NOT triggered, sprayer motor should stall

 

and not restart until gun is triggered again.

 

If sprayer starts again with gun NOT triggered, inspect

 

pump for internal/external leaks and check prime valve for

 

leaks.

 

 

 

Throat packing adjustment

As necessary based on usage

When pump packing begins to leak after extended use,

 

tighten packing nut down until leakage stops or lessens.

 

This allows approximately 100 gallons of additional

 

operation before a repacking is required. Packing nut can

 

be tightened without 0-ring removal.

 

 

 

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Graco 395/490/495/595 important safety instructions Maintenance, Activity Interval